Standard Test Method for Total Chlorides in Leather

SIGNIFICANCE AND USE
3.1 This test method is used to determine amount of soluble chlorides in leather.
SCOPE
1.1 This test method is intended for use in determining total chlorides in mineral tanned leather.  
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-Mar-2020
Technical Committee
D31 - Leather
Drafting Committee
D31.06 - Chemical Analysis

Relations

Effective Date
01-Apr-2020
Effective Date
01-Sep-2008
Effective Date
01-Oct-2003
Effective Date
10-Apr-1997
Effective Date
01-Apr-2020

Overview

ASTM D4653-87(2020): Standard Test Method for Total Chlorides in Leather establishes a reliable procedure for determining the amount of soluble chlorides present in mineral tanned leather. Published by ASTM International, this standard supports quality control, regulatory compliance, and consistent product performance within the leather industry. The method is vital for leather producers, laboratories, and end users concerned with the chemical composition and durability of leather products.

By adhering to internationally recognized principles and aligning with WTO Technical Barriers to Trade (TBT) Committee guidelines, ASTM D4653-87(2020) ensures compatibility with global trade and industry requirements.

Key Topics

  • Purpose: Accurately determines the total soluble chloride content in mineral tanned leather using standardized laboratory procedures.
  • Applicability: Specified for mineral tanned leather only. Values are expressed in SI units exclusively.
  • Sampling and Analysis: Utilizes a composite sample of leather, applying precise weighing, chemical reaction, and titration processes to ensure accurate quantification of chloride levels.
  • Equipment and Reagents: Involves typical laboratory apparatus and specific chemical solutions, such as ammonium hydroxide, silver nitrate, acetic acid, methyl orange indicator, and potassium chromate.
  • Data Reporting: Results are averaged from multiple test specimens and reported to the nearest 0.1%.

Applications

The ASTM D4653-87(2020) standard has broad applications throughout the leather industry and related sectors:

  • Quality Control: Ensures that mineral tanned leather meets stringent chemical property requirements, enhancing durability and consumer safety.
  • Product Specification Compliance: Assists manufacturers and suppliers in demonstrating conformity to chemical composition standards, facilitating acceptance in regulated markets.
  • R&D and Testing Laboratories: Provides a validated method for routine analysis in laboratory settings, supporting product development and failure analysis.
  • Leather Goods Manufacturing: Used to verify raw material suitability for high-end leather goods, automotive interiors, upholstery, footwear, and accessories.
  • Environmental and Regulatory Audits: Supports due diligence for environmental and safety audits by verifying the presence and concentration of chlorides in leather products.

Related Standards

Organizations following ASTM D4653-87(2020) may also reference related standards for comprehensive leather testing and quality assurance:

  • ASTM D2813: Practice for Sampling Leather for Physical and Chemical Tests - details procedures for obtaining representative leather samples for laboratory analysis.
  • EN ISO 2286: International standards for leather chemical analysis, providing additional methods for related chemical properties.
  • ISO 17234: Specifies the determination of certain chemical parameters in leather, useful for harmonized compliance.
  • ASTM D31 Standards: An umbrella for additional leather chemical analysis standards under the ASTM Committee D31 on Leather.

Practical Value

Compliance with ASTM D4653-87(2020) ensures reliable measurement of total chlorides in mineral tanned leather, contributing to:

  • Improved product performance and durability
  • Enhanced consumer safety and satisfaction
  • Regulatory and international trade compliance
  • Minimized risk of product recalls or quality disputes

By following this standard, organizations can uphold industry best practices, assure stakeholders of consistent product quality, and streamline market access for leather goods globally.

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Frequently Asked Questions

ASTM D4653-87(2020) is a standard published by ASTM International. Its full title is "Standard Test Method for Total Chlorides in Leather". This standard covers: SIGNIFICANCE AND USE 3.1 This test method is used to determine amount of soluble chlorides in leather. SCOPE 1.1 This test method is intended for use in determining total chlorides in mineral tanned leather. 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 3.1 This test method is used to determine amount of soluble chlorides in leather. SCOPE 1.1 This test method is intended for use in determining total chlorides in mineral tanned leather. 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 D4653-87(2020) is classified under the following ICS (International Classification for Standards) categories: 59.140.30 - Leather and furs. The ICS classification helps identify the subject area and facilitates finding related standards.

ASTM D4653-87(2020) has the following relationships with other standards: It is inter standard links to ASTM D4653-87(2015), ASTM D2813-03(2008), ASTM D2813-03, ASTM D2813-97, ASTM F1668-16(2022). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ASTM D4653-87(2020) 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: D4653 − 87 (Reapproved 2020)
Standard Test Method for
Total Chlorides in Leather
This standard is issued under the fixed designation D4653; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 5.3 Ammonium Hydroxide Solution, (0.1 N).
1.1 This test method is intended for use in determining total 5.4 Silver Nitrate, Standard Solution, (0.1 N).
chlorides in mineral tanned leather.
5.5 Potassium Chromate Solution,5%.
1.2 The values stated in SI units are to be regarded as
6. Sampling, Test Specimens and Test Units
standard. No other units of measurement are included in this
6.1 The test specimen shall consist of1gof leather from the
standard.
composite sample in accordance with Practice D2813.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 6.2 Two specimens from the composite sample shall be
tested.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
7. Procedure
mine the applicability of regulatory limitations prior to use.
7.1 Weigh the specimen to the nearest milligram and record
1.4 This international standard was developed in accor-
the value as W. Transfer the specimen to a 250 mL volumetric
dance with internationally recognized principles on standard-
flask and add 200 mL of 0.1 N ammonium hydroxide solution.
ization established in the Decision on Principles for the
Immerse the flask up to the neck in a bath of boiling water.
Development of International Standards, Guides and Recom-
Thoroughly wet all particles by occasional swirling. After 2 h,
mendations issued by the World Trade Organization Technical
cool the flask to room temperature and make the flask up to
Barriers to Trade (TBT) Committee.
volume with distilled water, shake and without delay filter
2. Referenced Documents
through a folded filter paper.
2.1 ASTM Standards:
7.2 Discard the first 20 to 25 mL of the filtrate. Pipette 200
D2813 Practice for Sampling Leather for Physical and
mL of the filtrate into a 600 mL beaker, add a few drops of
Chemical Tests
methyl orange indicator and neutralize with 5 % acetic acid to
an orange color.Add 2 to 3 mLof 5 % potassium chromate and
3. Significance and Use
titrate the solution with 0.1 N silver nitrate. Record the
3.1 This test method is used to determine amount of soluble
millilitre of silver nitrate asA.Titrate 200 mLof distilled water
chlorides in leather.
containing a few drops of methyl orange indicator and 2 to 3
mL of 5 % potassium chromate with 0.1 N silver nitrate as a
4. Apparatus
blank and the millilitre of silver nitrate used and recorded as B.
4.1 Volumetric Flask, 250 mL.
8. Calculation of Results
5. Reagents
8.1 Calculate the percent total chlorides as follows:
5.1 Acetic Acid Solution
...

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