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ASTM D4653-87(2020)

(Test Method)

Standard Test Method for Total Chlorides in Leather

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
ICS
59.140.30 - Leather and furs
Technical Committee
D31 - Leather
Drafting Committee
D31.06 - Chemical Analysis
Current Stage
Ref Project

Relations

Replaces
ASTM D4653-87(2015) - Standard Test Method for Total Chlorides in Leather
Effective Date
01-Apr-2020
Refers
ASTM D2813-03(2008) - Standard Practice for Sampling Leather for Physical and Chemical Tests
Effective Date
01-Sep-2008
Refers
ASTM D2813-03 - Standard Practice for Sampling Leather for Physical and Chemical Tests
Effective Date
01-Oct-2003
Refers
ASTM D2813-97 - Standard Practice for Sampling Leather for Physical and Chemical Tests
Effective Date
10-Apr-1997
Referred By
ASTM F1668-16(2022) - Standard Guide for Construction Procedures for Buried Plastic Pipe
Effective Date
01-Apr-2020

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ASTM D4653-87(2020) - Standard Test Method for Total Chlorides in LeatherASTM D4653-87(2020) - Standard Test Method for Total Chlorides in Leather
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ASTM D4653-87(2020) - Standard Test Method for Total Chlorides in Leather
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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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