71.080.50 - Anhydrides

ICS 71.080.50 Details

Anhydrides

Anhydride

Anhydrides

Anhidridi

General Information

Parent

71.080 - Organic chemicals

Frequently Asked Questions

What is ICS 71.080.50?

ICS 71.080.50 is a classification code in the International Classification for Standards (ICS) system. It covers "Anhydrides". 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.

How many standards are in ICS 71.080.50 - Anhydrides?

There are 25 standards classified under ICS 71.080.50 (Anhydrides). These standards are published by international and regional standardization bodies including ISO, IEC, CEN, CENELEC, and ETSI.

What is the International Classification for Standards (ICS)?

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.

Search Term

Standardization Organization

Technical Committee

Technical Committee Code

Directive

Mandate

Project Code

Project Reference

Project Title

Project Scope

	Jan 2026
28	29	30	31	1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30	31
1	2	3	4	5	6	7

	Feb 2026
25	26	27	28	29	30	31
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
1	2	3	4	5	6	7

Publication Date

	Jan 2026
28	29	30	31	1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30	31
1	2	3	4	5	6	7

	Feb 2026
25	26	27	28	29	30	31
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
1	2	3	4	5	6	7

Withdrawal Date

	Jan 2026
28	29	30	31	1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30	31
1	2	3	4	5	6	7

	Feb 2026
25	26	27	28	29	30	31
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
1	2	3	4	5	6	7

Public Enquiry End Date

Page Size:

ASTM

ASTM D8087-18(Test Method)

Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale) Using Tristimulus Colorimetry

SIGNIFICANCE AND USE
4.1 The color of maleic anhydride can be an indication of the purity of these materials. A high color after heating normally indicates contamination or decomposition.
4.2 This standard is suitable for process quality control and determining if the product meets specifications.
SCOPE
1.1 This test method covers an instrumental method for the CIE (Commission International de l’Eclairage) tristimulus measurement of the color of maleic anhydride melt before and after prolonged heating under specified conditions of time and temperature. The measurement is converted to color values in the platinum-cobalt system.
1.2 This test method covers the range 0 to100 Pt-Co color.
1.3 In determining the conformance of the test results using this method to applicable specification, results shall be rounded in accordance with the rounding off methods of Practice E29.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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. For specific hazard statements, see Sections 7, 10.3, and 10.6.
1.6 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.

Standard
4 pages
English language
sale 15% off

31-Jan-2018
71.080.50
D16

ASTM

ASTM D3366-18(Test Method)

Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale)

SIGNIFICANCE AND USE
4.1 The color of maleic anhydride can be an indication of the purity of these materials. High colors normally indicate contamination or decomposition. This test method is suitable for setting specifications and for use as an internal quality control tool.
SCOPE
1.1 This test method covers the determination of the visual measurement of the color of maleic anhydride melt before and after prolonged heating under specified conditions of time and temperature. Color values are expressed in terms of platinum-cobalt standards.
1.2 This test method covers the range 0 to 100 color standard numbers.
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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. For specific hazard statements see Sections 7, 10.2.1, and 10.4.2.
1.6 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.

Standard
4 pages
English language
sale 15% off

31-Jan-2018
71.080.50
D16

ASTM

ASTM D3504-96(2003)e1(Specification)

Standard Specification for Maleic Anhydride (Withdrawn 2012)

ABSTRACT
This specification covers the standard requirements for maleic anhydride. The material shall be tested and sampled in accordance with standard test methods and practices and shall conform to the following requirements: solidification point and color of the specimens in the molten state and after heating in the platinum-cobalt scale.
SCOPE
1.1 This specification covers maleic anhydride.
1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this specification, an observed value or a calculated value shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E 29.
1.3 Consult current OSHA regulations and supplier's Material Safety Data Sheets, and local regulations for all materials used in this specification.
WITHDRAWN RATIONALE
This specification covers maleic anhydride.
Formerly under the jurisdiction of Committee D16 on Aromatic Hydrocarbons and Related Chemicals, this specifications was withdrawn in January 2012 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.

Technical specification
1 page
English language
sale 15% off

09-Feb-2003
05-Jan-2012
71.080.50
D16

ASTM

ASTM D2930-03(Test Method)

Standard Test Method for Maleic Acid in Maleic Anhydride by Potentiometric Titration (Withdrawn 2012)

SIGNIFICANCE AND USE
The maleic acid content is usually an indication of exposure to moisture in air. Maleic anhydride reacts with moisture to form maleic acid.
SCOPE
1.1 This test method covers the determination of free maleic acid in refined maleic anhydride by potentiometric titration.
1.2 This test method is applicable for all concentrations of maleic acid; however, it is primarily used for concentrations below 0.5 %.
1.3 The following applies to all specified limits in this standard: For purposes of determining conformance with this standard, an observed value or a calculated value shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E 29.
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. For specific hazard statements, see Section 7.
WITHDRAWN RATIONALE
This test method covers the determination of free maleic acid in refined maleic anhydride by potentiometric titration.
Formerly under the jurisdiction of Committee D16 on Aromatic Hydrocarbons and Related Chemicals, this test method was withdrawn in January 2012 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.

Standard
2 pages
English language
sale 15% off

09-Jan-2003
05-Jan-2012
71.080.50
D16