ASTM D4906-95(2023)
(Test Method)Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials
Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials
SIGNIFICANCE AND USE
2.1 This test method is intended for use in determining the total solids content and the ash content of a finishing material before its use on any leather.
SCOPE
1.1 This test method covers the total solids and ash content of finishing materials.
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.
General Information
- Status
- Published
- Publication Date
- 31-Aug-2023
- Technical Committee
- D31 - Leather
- Drafting Committee
- D31.06 - Chemical Analysis
Overview
ASTM D4906-95(2023) - Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials defines a reliable laboratory procedure to determine the total solids content and ash content in finishing materials before their application on leather products. Developed and maintained by ASTM International, this method ensures standardized measurements crucial for the quality control and formulation of leather finishing chemicals. Adhering to internationally recognized principles, this standard supports manufacturers, testing laboratories, and regulatory bodies in evaluating leather finishing materials in a consistent manner.
Key Topics
- Total Solids Content Determination: Assesses the proportion of non-volatile substances present in leather finishing materials after removal of moisture and other volatiles by controlled oven drying.
- Ash Content Analysis: Measures the residue remaining after combustion at high temperatures, which provides an estimate of the inorganic mineral content in the sample.
- Standardized Equipment: Utilizes platinum dishes, drying ovens, desiccators, and muffle furnaces to ensure accurate and repeatable results.
- Reporting: Results for both total solids and ash content are expressed as a percentage of the original sample, with duplicate determinations ensuring reliability.
- Safety and Compliance: Users are responsible for implementing appropriate safety, health, and environmental practices during testing and must consider applicable regulations.
Applications
- Quality Control in Leather Industry: Ensures consistency and conformity of leather finishing materials to product specifications, supporting manufacturers in delivering high-quality finished leather goods.
- Product Development and Formulation: Assists chemical suppliers and formulators in validating the composition of new or modified finishing materials, ensuring effectiveness and performance.
- Regulatory Compliance: Provides a recognized and accepted method for laboratories and regulatory agencies to verify the content of commercial leather finishing products.
- Research and Academic Studies: Facilitates materials science and chemistry research related to leather finishing by offering a validated approach for component analysis.
Related Standards
- ASTM D31 Committee Standards: This test method is under the jurisdiction of ASTM Committee D31 on Leather, especially Subcommittee D31.06 on Chemical Analysis.
- International Standards Alignment: Developed in accordance with World Trade Organization (WTO) Technical Barriers to Trade (TBT) principles, ensuring global relevance.
- Other Leather Testing Methods: Complements standards addressing other properties of leather and finishing compounds, such as durability, colorfastness, and chemical resistance.
Practical Value
Implementing ASTM D4906-95(2023) in laboratory and industrial settings helps:
- Verify Product Quality: Controls the total solids and ash content to meet internal and customer requirements for leather finishing materials.
- Detect Contamination or Adulteration: Identifies discrepancies in composition, allowing early intervention in the supply chain.
- Support Sustainable Practices: By enabling precise formulation and minimizing waste, this standard assists companies in environmental and resource management.
Keywords: total solids, ash content, leather finishing materials, ASTM D4906, leather testing, leather quality control, laboratory methods, standard test method, finishing material analysis
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Frequently Asked Questions
ASTM D4906-95(2023) is a standard published by ASTM International. Its full title is "Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials". This standard covers: SIGNIFICANCE AND USE 2.1 This test method is intended for use in determining the total solids content and the ash content of a finishing material before its use on any leather. SCOPE 1.1 This test method covers the total solids and ash content of finishing materials. 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.
SIGNIFICANCE AND USE 2.1 This test method is intended for use in determining the total solids content and the ash content of a finishing material before its use on any leather. SCOPE 1.1 This test method covers the total solids and ash content of finishing materials. 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.
ASTM D4906-95(2023) is classified under the following ICS (International Classification for Standards) categories: 59.140.10 - Processes and auxiliary materials. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM D4906-95(2023) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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.
Designation: D4906 − 95 (Reapproved 2023)
Standard Test Method for
Total Solids and Ash Content in Leather Finishing Materials
This standard is issued under the fixed designation D4906; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Procedure
1.1 This test method covers the total solids and ash content
5.1 Total Solids:
of finishing materials.
5.1.1 Place the samples, which have been weighed in
1.2 The values stated in SI units are to be regarded as platinum dishes, in the oven for 16 h at 43 °C followed by 2 h
standard. No other units of measurement are included in this at 93 °C. (If two ovens at different temperatures are not
standard. available, increase the temperature in the first oven for the 2-h
heating.)
1.3 This standard does not purport to address all of the
5.1.2 Remove the dishes from the oven, place them in a
safety concerns, if any, associated with its use. It is the
desiccator for 1 h to cool to room temperature and weigh.
responsibility of the user of this standard to establish appro-
Return the dishes to the oven for 1 h at 93 °C and, after cooling
priate safety, health, and environmental practices and deter-
in a desiccator for 1 h, weigh again.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor- 5.1.3 If the weight loss in the 1-h drying period did not
dance with internationally recognized principles on standard- change the total solids percentage more than 0.1 %, report the
ization established in the Decision on Principles for the results. If greater than 0.1 % loss was obtained from the last
Development of International Standards, Guides and Recom- 1-h drying period, then repeat the drying until the change is
mendations issued by the World Trade Organization Technical less than 0.1 %.
Barriers to Trade (TBT) Committee.
5.2 Ash:
5.2.1 Place each platinum dish, containing the residue from
2. Significance and Use
the total solids determination, in a muffle furnace at 600 °C 6
2.1 This test method is intended for use in determining the
25 °C for 2 h.
total solids content and the ash content of a finishing material
5.2.2 If difficulty is encountered in completely burning off
before its use on any leather.
the carbon, leach the residue with hot water (filtering through
ashless filter paper) and further ignite this residue in the muffle
3. Apparatus
furnace.
3.1 Two Tared Platinum Dishes.
5.2.3 To the dish containing the cooled ash, add the filtrate;
3.2 Drying Oven, that operates at 43 °C 6 3 °C and 93 °C
evaporate to dryness and heat for 30 min at 600 °C 6 25 °C.
6 3 °C.
The product shall then be cooled in a dessicator and weighed.
3.3 Desiccator, with calcium chloride or other desiccant.
6. Calculation
3.4 Muffle Furnace, capable of maintaining temperatures of
(600 °C 6 25 °C).
6.1 The percent tota
...
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