71.060.20 - Oxides
ICS 71.060.20 Details
Oxides
Oxide
Oxydes
Oksidi
General Information
Frequently Asked Questions
ICS 71.060.20 is a classification code in the International Classification for Standards (ICS) system. It covers "Oxides". The ICS is a hierarchical classification system used to organize international, regional, and national standards, facilitating the search and identification of standards across different fields.
There are 71 standards classified under ICS 71.060.20 (Oxides). These standards are published by international and regional standardization bodies including ISO, IEC, CEN, CENELEC, and ETSI.
The International Classification for Standards (ICS) is a hierarchical classification system maintained by ISO to organize standards and related documents. It uses a three-level structure with field (2 digits), group (3 digits), and sub-group (2 digits) codes. The ICS helps users find standards by subject area and enables statistical analysis of standards development activities.
SIGNIFICANCE AND USE
5.1 Control of silica in boiler feedwater and boiler water is necessary to minimize the formation of scale-forming silicates that decrease heat transfer in the boiler. Volatilization and carryover of silica with the steam may cause hard, glassy siliceous deposits to form on turbine blades that reduce turbine efficiency.
5.2 Colloidal silica that is not removed by boiler water pretreatment processes may be solubilized in the boiler and thus contribute to the dissolved silica concentration in the boiler. Both dissolved and total silica are of interest.
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1.1 This test method covers the determination of total silica in water.
1.2 This test method is applicable in the range from 25 μg/L to 250 μg/L of silica as SiO2. Higher concentrations may be determined by decreasing the aliquot volume (see Note 6). Concentration range should not be extended by dilution.
1.3 This test method determines total silica, and does not distinguish between soluble and insoluble forms.
1.4 This test method was tested on reagent water only. It is the user's responsibility to assure the validity of the test method for waters of other matrices.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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ABSTRACT
This specification covers the properties and requirements for pellets of stabilized cubic hafnium oxide used in nuclear reactors. Hafnium oxide should consist of a stabilizing agent, the recommended of which is yttrium oxide, though others such as calcium oxide and magnesium oxide may also be used as agreed upon by the buyer and seller. The material shall meet specified values of the following requirements: physical dimensions; density; mechanical properties; phase stabilization; impurity concentration limits; moisture concentration limit; visual appearance; end and circumferential chips; cracks; and fissures and other defects.
SCOPE
1.1 This specification applies to pellets of stabilized cubic hafnium oxide used in nuclear reactors.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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ABSTRACT
This specification applies to pellets of stabilized zirconium oxide used in nuclear reactors. The chemical composition requirements such as the stabilizing additive (calcium oxide or yttrium oxide), analytical chemistry methods, impurity concentration (including hafnium, boron, gadolinium, samarium, europium, dysprosium, cobalt, silicon, iron, calcium, magnesium, aluminum, titanium, thorium, fluorine, chlorine, bromine, iodine, and hydrogen), and moisture concentration are prescribed. The nuclear grade pellets shall conform to the specified physical requirements which includes the following: physical dimensions, density, mechanical properties and test methods such as compressive test and thermal cycling test, and visual appearance such as end chips, circumferential chips, cracks, and fissures. The requirements for cleanliness before and after sampling and packaging are given.
SCOPE
1.1 This specification applies to pellets of stabilized zirconium oxide used in nuclear reactors.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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SCOPE
1.1 This specification defines the physical and chemical requirements for hafnium oxide powder intended for fabrication into shapes for use in a nuclear reactor core.
1.2 The material described herein shall be particulate in nature.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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ABSTRACT
This specification provides the chemical and physical properties and requirements for nuclear-grade aluminum oxide powder intended for fabrication into shapes for nuclear applications. The materials shall conform to physical requirements as to particle size distribution, and specific surface area, and chemical requirements as to loss-on-ignition, and total and elemental concentrations of all impurities. Impurities may include silicaon, iron-chromium-nickel, magnesium, sodium, calcium, hafnium, fluorine, fluorine-chlorine-iodine-bromine, gadolinium, samarium, europium, and dysprosium.
SCOPE
1.1 This specification provides the chemical and physical requirements for nuclear-grade aluminum oxide powder intended for fabrication into shapes for nuclear applications. Two specific uses for which this powder is intended are Al2O3 pellets and Al2O3 − B4C composite pellets for use as thermal insulator or burnable neutron absorbers, respectively.
1.2 The material described herein shall be particulate in nature.
1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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SCOPE
1.1 This specification defines the physical and chemical requirements for zirconium oxide powder intended for fabrication into shapes, either entirely or partially of zirconia, for use in a nuclear reactor core.
1.2 The material described herein shall be particulate in nature.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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SCOPE
1.1 This specification applies to pellets of aluminum oxide that may be ultimately used in a reactor core, for example, as filler or spacers within fuel, burnable poison, or control rods. In order to distinguish between the subject pellets and “burnable poison” pellets, it is established that the subject pellets are not intended to be used as neutron-absorbing material.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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SIGNIFICANCE AND USE
4.1 General—This guide contains information regarding the use of AOPs to oxidize and eventually mineralize hazardous materials that have entered surface and groundwater as the result of a spill. These guidelines will only refer to those units that are currently applied at a field scale level. The user should review applicable state regulations and guidance on the applicability of AOP (see California DTSC 2010, New Jersey DEP 2017, Oklahoma DEQ 2017).
Note 1: Commercialization of AOP for the treatment of wastewater and process water is fairly mature. Several transnational companies offer mobile and large-scale processing units for the treatment of persistent chemicals of concern. Standard Guides D5745, E2081, and E2616 may be useful. Fig. 1 illustrates the general AOP process.
FIG. 1 Schematic Illustration of Hydroxyl Radical's Generation for the Degradation of Organic Pollutants
Source: Amor, Carlos, et al. Application of Advanced Oxidation Processes for the Treatment of Recalcitrant Agro-Industrial Wastewater: A Review. Water 2019, 11(2), 205; https://doi.org/10.3390/w11020205 (open access publication)
Fig. 2 illustrates the range of AOP technologies.
FIG. 2 Examples of Advanced Oxidation Processes
Source: Amor, Carlos, et al. Application of Advanced Oxidation Processes for the Treatment of Recalcitrant Agro-Industrial Wastewater: A Review. Water 2019, 11(2), 205; https://doi.org/10.3390/w11020205 (open access publication)
4.2 Oxidizing Agents:
4.2.1 Hydroxyl Radical (OH)—The OH radical is the most common oxidizing agent employed by this technology due to its powerful oxidizing ability. When compared to other oxidants such as molecular ozone , hydrogen peroxide, or hypochlorite, its rate of attack is commonly much faster. In fact, it is typically one million (106) to one billion (109) times faster than the corresponding attack with molecular ozone (Keller and Reed, 1991 (1)).9 The three most common methods for generating the hydroxyl radical ar...
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1.1 This guide covers the considerations for advanced oxidation processes (AOPs) in the mitigation of spilled chemicals and hydrocarbons dissolved into ground and surface waters.
1.2 This guide addresses the application of advanced oxidation alone or in conjunction with other technologies.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
In addition, it is the responsibility of the user to ensure that such activity takes place under the control and direction of a qualified person with full knowledge of any potential safety and health protocols.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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SIGNIFICANCE AND USE
5.1 The copper oxides layer present on the surface of the copper rod has a detrimental effect on both final surface quality of the copper wire produced by cold drawing of the rod, and on the drawing process itself leading to wire breaks and excessive wear of the drawing dies. Thus, it is critical to use adequate cleaning techniques during the copper rod manufacturing process in order to limit the depth of the residual copper oxide layer on the finished rod, and it is necessary to have a method to accurately measure the copper oxide depth.
5.2 This test method is the most common test method used by continuous casting and rolling mills to measure the depth of residual surface oxides after the copper rod has been cleaned.
5.3 Applicability of the test method for any other purpose or product has not been evaluated. Suitability beyond the stated scope shall be evaluated before use.
SCOPE
1.1 This specification established a quantitative, laboratory conducted, electrolytic reduction method to determine the thickness of surface copper oxide films on copper rod produced to Specification B49 for further fabrication into electrical conductors.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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SIGNIFICANCE AND USE
3.1 This test method may be used for production quality control or specification acceptance.
SCOPE
1.1 This test method covers the quantitative determination of ferrous oxide (FeO) by oxidation of ferrous iron (Fe++) in an acid solution to the ferric state (Fe+++) and titration with potassium dichromate using diphenylamine as the indicator.
1.2 This test method is applicable to synthetic black iron oxide, natural black iron oxide, magnetite or brown iron oxide where part of the iron content is present in the ferrous state (Note 1). It is applicable to iron oxides where the ferrous iron content ranges from 50 to 0.20 %.
Note 1: Natural iron oxides and magnetite may contain traces of metallic iron that will be combined with and analyzed as FeO.
1.3 This standard does not purport to address the safety concerns if any, problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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ABSTRACT
This specification provides chemical and physical requirements for nuclear-grade gadolinium oxide powder intended for subsequent processing and use in nuclear fuel applications. Chemical requirements of the specification include loss-on-ignition, gadolinium oxide concentration, and impurity content limits. The buyer shall specify the particle size, density, shape factor, and crystal structure. Gadolinium oxide powder shall be packaged in sealed containers.
SCOPE
1.1 This specification provides the chemical and physical requirements for nuclear-grade gadolinium oxide powder intended for subsequent processing and use in nuclear fuel applications, for example, as an addition to uranium dioxide.
1.2 This specification does not include requirements for health and safety. Observance of this specification does not relieve the user of the obligation to be aware of and comply with all federal, state, and local regulations pertaining to possessing, shipping, processing, or using this material.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This European Standard gives the specifications of and the test methods for liquid fuels derived from coal tar. The specifications also apply to shale oil, aromatic mineral oils, and lignite tar.
Preheating of liquid fuel oils according to this standard can be necessary for transport, storage, and combustion.
The mixing with fuel oils from other raw materials should be avoided.
This standard does not cover marine fuel applications.
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This European Standard specifies the requirements, acceptance tolerances and chemical and physical test procedures for lead oxides, considering litharges (powder or granulated), battery oxides (Barton or Mill) and crystal red lead. WARNING: Lead and lead compounds are toxic by inhalation and/or ingestion.
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ABSTRACT
This specification covers aluminum oxide (alumina) powder in two classes of particle size, two chemical grades, and two levels of acidity. Aluminum oxide powder shall conform to the chemical composition requirements indicated in this specification. The alumina powder shall be tested for water-soluble content, particle size, and hydrogen-ion concentration according to the procedures in this specification.
SCOPE
1.1 This specification covers aluminum oxide (alumina) powder in two classes of particle size, two chemical grades, and two levels of acidity, for use as an insulating coating or as an ingredient of ceramic mixtures for components of electronic devices as follows:
1.1.1 Particle Sizes:
1.1.1.1 Class A—Particle size No. 500 nominal mesh (nominal average particle size = 24.3 μm).
1.1.1.2 Class B—Particle size No. 900 nominal mesh (nominal average particle size = 1.7 μm).
1.1.2 Chemical Grades—Grades 1 and 2 as specified under chemical requirements in Section 3.
1.1.3 Acidity Levels: pH (acid) 4.5 to 6.5 and pH (neutral) 6.5 to 7.5.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 The following safety hazards caveat pertains only to the test methods in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
WITHDRAWN RATIONALE
This specification covers aluminum oxide (alumina) powder in two classes of particle size, two chemical grades, and two levels of acidity, for use as an insulating coating or as an ingredient of ceramic mixtures for components of electronic devices.
Formerly under the jurisdiction of Committee F01 on Electronics, this specification was withdrawn in November 2023. This standard is being withdrawn without replacement because Committee F01 was disbanded.
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SIGNIFICANCE AND USE
5.1 In the design and operation of reverse osmosis installations, it is important to predict the SiO2 scaling properties of the concentrate stream. Because of the increase in the concentration of SiO2 and the change in pH, the scaling property of the concentrate stream will be quite different from that of the feed solution. This practice permits the calculation of the scaling potential for the concentrate stream from the feedwater analysis and the reverse osmosis operating parameters.
5.2 Scaling by SiO2 will adversely affect the reverse osmosis performance. This practice gives various procedures for the prevention of scaling.
5.3 The presence of certain metals, for example, Al+3, may significantly alter the solubility of SiO2 via formation of insoluble metal silicates. This practice does not address this phenomena.
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1.1 This practice covers the calculation and adjustment of silica (SiO2) for the concentrate stream of a reverse osmosis system. The calculations are used to determine the need for scale control in the operation and design of reverse osmosis installations. This practice is applicable for all types of reverse osmosis devices (tubular, spiral wound, and hollow fiber).
1.2 This practice is applicable to both brackish waters and seawaters.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
WITHDRAWN RATIONALE
This practice covers the calculation and adjustment of silica (SiO2) for the concentrate stream of a reverse osmosis system. The calculations are used to determine the need for scale control in the operation and design of reverse osmosis installations. This practice is applicable for all types of reverse osmosis devices (tubular, spiral wound, and hollow fiber).
Formerly under the jurisdiction of Committee D19 on Water, this practice was withdrawn in January 2023 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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SIGNIFICANCE AND USE
4.1 The determination of 129I is not typically requested in nuclear fuel specifications however it is commonly requested for disposal of the spent fuel, or for disposal of excess uranium from national weapon complexes. This practice can provide results of sufficient quality for waste disposal repositories.
SCOPE
1.1 This method covers the determination of iodine-129 (129I) in uranium oxide by gamma-ray spectrometry. The method could also be applicable to the determination of 129I in aqueous matrices.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
WITHDRAWN RATIONALE
This guide covers the determination of iodine-129 (129I) in uranium oxide by gamma-ray spectrometry. This guide could also be applicable to the determination of 129I in aqueous matrices.
Formerly under the jurisdiction of Committee C26 on Nuclear Fuel Cycle, this guide was withdrawn in June 2021. This guide is being withdrawn without replacement due to its limited use by industry.
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SIGNIFICANCE AND USE
This test method may be used to determine the total chlorine content of unknown organic samples or to assay known chlorine containing organic compounds.
This test method may be used on organic materials in which the complete conversion to chloride can be accomplished by sodium peroxide bomb ignition, and which contain no other halogens.
SCOPE
1.1 This test method covers the determination of chlorine in organic compounds by sodium peroxide bomb ignition. It is intended for application to samples of organic materials containing more than 0.5 % chlorine. The procedure assumes that compounds containing halogens other than chlorine will not be present.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific safety precautions, see 6.5.2, Section 7, 8.3, and 8.9.
1.3 Review the current Material Safety Data Sheets (MSDS) for detailed information concerning toxicity, first aid procedures, and safety precautions.
Note 1—Other test methods based on oxygen bomb combustion for analysis for chlorine are described in Test Method D808, Test Method D2361, and Test Method D4208.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
WITHDRAWN RATIONALE
This test method covers the determination of chlorine in organic compounds by sodium peroxide bomb ignition. It is intended for application to samples of organic materials containing more than 0.5 % chlorine. The procedure assumes that compounds containing halogens other than chlorine will not be present.
Formerly under the jurisdiction of Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals, this test method was withdrawn in January 2018 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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1.1 This practice describes recommended procedures for the safe handling of densified articles made from nonfibrous aluminum oxide reinforced with silicon carbide whiskers.
1.2 The information in this practice is intended for a material safety data sheet (MSDS) for densified articles of aluminum oxide reinforced with silicon carbide whiskers.
1.3 This MSDS does not apply to products with a final density such that, during abrasion or other conditions of handling or use, SiC whiskers are released in excess of the limits of this practice.
1.4 Other materials may be included in the final product (for example, sintering aids); information specific to these additional materials should be included in each manufacturer's MSDS.
1.5 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard and precaution statements, see Sections 4, 6, 8, and 9.
WITHDRAWN RATIONALE
This practice covered recommended procedures to reduce health and safety problems, which may arise during the handling of densified articles made from nonfibrous aluminum oxide reinforced with silicon carbide (SiC) whiskers.
Formerly under the jurisdiction of Committee E34 on Occupational Health and Safety, this practice was withdrawn in 2007 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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This European Standard is applicable to ammonia solution used for treatment of water intended for human consumption. It describes the characteristics of ammonia solution and specifies the requirements and the corresponding test methods for ammonia solution. It gives information on its use in water treatment.
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1.1 This test method covers the determination of magnetic material content of fused electrically insulating magnesium oxide powders.
1.2 The values stated in acceptable metric units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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1.1 These test methods cover the determination of the compaction density of electrical grade magnesium oxide in heating units.
1.2 Two alternative procedures are described: Test Method A -Water Displacement, and Test Method B -Absorption.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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1.1 This test method covers techniques for sampling large lots of magnesium oxide (MgO) and reducing representative samples to test weight.
1.2 The values stated in acceptable metric units are to be regarded as the standard. The values in parentheses may be approximate.
1.3 This standard does not purport to address the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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SCOPE
1.1 This method covers the determination of thermal conductivity of compacted, granular, electrical grade magnesium oxide (MgO) under conditions which simulate the use of this material as insulation in tubular heating units.
1.2 The values stated in inch-pound units are to be regarded as the standard.
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SCOPE
1.1 This test method covers the accelerated life testing of electrical grade magnesium oxide (MgO) under conditions involving thermal cycling to an elevated temperature. The test determines both the rate at which electrical insulation impedance (Note 1) or test current through the insulation changes with time and the time span resulting in complete failure of a test cell incorporating the sample under test. Note 1-At test temperatures, capacitive and inductive reactance are negligible, and therefore impedance values are considered essentially resistive.
1.2 This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific safety precaution, see 9.4.1.
1.3 The values stated in acceptable metric units are to be regarded as the standard.
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1.1 This test method covers the determination of the particle size distribution in a representative sample of granular electrical grade magnesium oxide.
1.2 The values stated in acceptable metric units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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1.1 This test method covers the determination of specific electrical impedance of electrical-grade magnesium oxide by externally heating a test cell to elevated temperatures using typical materials.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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1.1 This test method covers the determination of the loss on ignition of electrical grade magnesium oxide for use in sheathed heating units.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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SCOPE
1.1 This test method covers the determination of sinter index which predicts the sintering characteristics of electrical grade magnesium oxide for use in manufacturing sheathed heating elements.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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SCOPE
1.1 This test method covers the determination of the flow rate and the tap density which predicts the fill rate and flow rate of granular electrical grade magnesium oxide used in the manufacturing of sheathed heating elements.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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The method is based on titration of dissolved test portion with a standard volumetric solution of sodium hydroxide in the presence of mannitol or sorbitol, using phenolphthalein as indicator. Water, free from carbon dioxide, shall be used in the test.
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