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ASTM D4899-99(2020)

(Practice)

Standard Practice for Analysis of Vegetable Tanning Materials—General

Standard Practice for Analysis of Vegetable Tanning Materials—General

SIGNIFICANCE AND USE
3.1 Vegetable tanning materials are natural products containing various substances of varying composition, concentration and quality.  
3.2 The methods referenced are useful for analyzing and testing vegetable tanning materials for moisture, water-extractable substances, cold-soluble fractions, tannins, non-tannins, acidity, tanning properties, the color of tanned leather, and the presence or absence of certain admixtures.
SCOPE
1.1 This practice is intended for use in the chemical analysis of all vegetable tanning 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
30-Nov-2020
ICS
59.140.10 - Processes and auxiliary materials
Technical Committee
D31 - Leather
Drafting Committee
D31.01 - Vegetable Leather
Current Stage
Ref Project

Relations

Refers
ASTM D4900-99(2009) - Standard Test Method for Lignosulfonates (Sulfite Cellulose) in Tanning Extracts
Effective Date
01-Apr-2009
Refers
ASTM D6405-99(2009) - Standard Practice for Extraction of Tannins from Raw and Spent Materials
Effective Date
01-Apr-2009
Refers
ASTM D6401-99(2009) - Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
Effective Date
01-Apr-2009
Refers
ASTM D6409-99(2009) - Standard Practice for Color Tests with Sheepskin Skiver
Effective Date
01-Apr-2009
Refers
ASTM D4905-99(2009) - Standard Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts
Effective Date
01-Apr-2009
Refers
ASTM D4901-99(2009) - Standard Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts
Effective Date
01-Apr-2009
Refers
ASTM D6402-99(2009) - Standard Test Method for Determing Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials
Effective Date
01-Apr-2009
Refers
ASTM D6408-99(2009) - Standard Test Method for Analysis of Tannery Liquors
Effective Date
01-Apr-2009
Refers
ASTM D4903-99(2009) - Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts
Effective Date
01-Apr-2009
Refers
ASTM D6406-99(2009) - Standard Test Method for Analysis of Sugar in Vegetable Tanning Materials
Effective Date
01-Apr-2009
Refers
ASTM D4904-99(2009) - Standard Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts
Effective Date
01-Apr-2009
Refers
ASTM D6403-99(2009) - Standard Test Method for Determining Moisture in Raw and Spent Materials
Effective Date
01-Apr-2009
Refers
ASTM D6404-99(2009) - Standard Practice for Sampling Vegetable Materials Containing Tannin
Effective Date
01-Apr-2009
Refers
ASTM D4902-99(2009) - Standard Test Method for Evaporation and Drying of Analytical Solutions
Effective Date
01-Apr-2009
Refers
ASTM D6410-99(2009) - Standard Test Method for Determining Acidity of Vegetable Tanning Liquors
Effective Date
01-Apr-2009

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ASTM D4899-99(2020) - Standard Practice for Analysis of Vegetable Tanning Materials—GeneralASTM D4899-99(2020) - Standard Practice for Analysis of Vegetable Tanning Materials—General
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ASTM D4899-99(2020) - Standard Practice for Analysis of Vegetable Tanning Materials—General
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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: D4899 − 99 (Reapproved 2020)
Standard Practice for
Analysis of Vegetable Tanning Materials—General
This standard is issued under the fixed designation D4899; 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 D6402 Test Method for Determining Soluble Solids and
Insolubles in Extracts of Vegetable Tanning Materials
1.1 This practice is intended for use in the chemical analysis
D6403 Test Method for Determining Moisture in Raw and
of all vegetable tanning materials.
Spent Materials
1.2 The values stated in SI units are to be regarded as
D6404 Practice for Sampling Vegetable Materials Contain-
standard. No other units of measurement are included in this
ing Tannin
standard.
D6405 Practice for Extraction of Tannins from Raw and
1.3 This standard does not purport to address all of the
Spent Materials
safety concerns, if any, associated with its use. It is the
D6406 Test Method for Analysis of Sugar in Vegetable
responsibility of the user of this standard to establish appro-
Tanning Materials
priate safety, health, and environmental practices and deter-
D6407 Test Method for Analysis of Iron and Copper in
mine the applicability of regulatory limitations prior to use.
Vegetable Tanning Materials
1.4 This international standard was developed in accor-
D6408 Test Method for Analysis of Tannery Liquors
dance with internationally recognized principles on standard-
D6409 Practice for Color Tests with Sheepskin Skiver
ization established in the Decision on Principles for the
D6410 Test Method for Determining Acidity of Vegetable
Development of International Standards, Guides and Recom-
Tanning Liquors
mendations issued by the World Trade Organization Technical
2.2 ALCA Methods:
Barriers to Trade (TBT) Committee.
A1 Analysis of Vegetable Tanning Materials—General
A5 Extraction of Raw and Spent Materials
2. Referenced Documents
A6 Moisture in Raw and Spent Materials
2.1 ASTM Standards:
A10 Preparation of Solution of Liquid Extracts
D4900 Test Method for Lignosulfonates (Sulfite Cellulose)
A11 Preparation of Solution of Solid, Pasty, and Powdered
in Tanning Extracts
Extracts
D4901 Practice for Preparation of Solution of Liquid Veg-
A12 Cooling of Analytical Solutions
etable Tannin Extracts 3
A13 Evaporation and Drying of Analytical Solutions
D4902 Test Method for Evaporation and Drying of Analyti-
A20 Total Solids and Water
cal Solutions 3
A21 Soluble Solids and Insolubles
D4903 Test Method for Total Solids and Water in Vegetable
A22 Non-Tannins and Tannin
Tanning Material Extracts 3
A25 Analysis of Tannery Liquors
D4904 Practice for Cooling of Analytical Solutions
A30 Sugar in Tanning Materials
D4905 Practice for Preparation of Solution of Solid, Pasty 3
A31 Copper and Iron in Tanning Materials
and Powdered Vegetable Tannin Extracts
A40 Color Tests with Sheepskin Skiver
D6401 Test Method for Determining Non-Tannins and Tan- 3
A50 Lignosulfates (Sulfite Cellulose)
nin in Extracts of Vegetable Tanning Materials
A60 Official Certification
J10 Sampling of Vegetable Materials Containing Tannin
This practice is under the jurisdiction ofASTM Committee D31 on Leather and
2.3 Federal Specification
is the direct responsibility of Subcommittee D31.01 on Vegetable Leather. This
DD-V-582 Volumetric Apparatus, Glass
practice has been adapted from and is a replacement for Method A1 of the Official
Methods of the American Leather Chemists Association.
Current edition approved Dec. 1, 2020. Published December 2020. Originally
approved in 1989. Last previous edition approved in 2016 as D4899–99 (2016).
DOI: 10.1520/D4899-99R20. Official Methods of the American Leather Chemists Association. Available
For referenced ASTM standards, visit the ASTM website, www.astm.org, or fromtheAmericanLeatherChemistsAssociation(ALCA),Universityof
...

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SCOPE
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ASTM D6402-99(2020)(Test Method)
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SIGNIFICANCE AND USE
5.1 This test method is used to determine the proportion of the total solids which are soluble solids and that proportion which are insoluble solids in a solution of tannin extract or in the water extract from raw or spent materials prepared for tannin analysis.  
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SCOPE
1.1 This test method is intended for use in determining the quantity of soluble solids and insolubles in solutions of tannin extracts, water extracts of vegetable tanning materials, or tanning liquors. This test method is applicable to the analysis of liquid, solid, pasty, and powdered tannin extracts and to the water extracts of raw or spent materials.  
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ASTM D6409-99(2020)(Practice)
Standard Practice for Color Tests with Sheepskin Skiver

SIGNIFICANCE AND USE
5.1 This practice provides a standard procedure for comparing the color of leather tanned with different tanning extracts or mixtures of extracts or for monitoring the color consistency of tannery liquors.
SCOPE
1.1 This practice covers making color tests of all types of vegetable tanning extracts and of vegetable tanning materials to determine the color imparted to tanned skins.  
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