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
- Technical Committee
- D31 - Leather
- Drafting Committee
- D31.01 - Vegetable Leather
Relations
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
- 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
- Effective Date
- 01-Apr-2009
- 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
- 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
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
Overview
ASTM D4899-99(2020), titled Standard Practice for Analysis of Vegetable Tanning Materials-General, is an internationally recognized guideline developed by ASTM International. The standard defines procedures for the chemical analysis of vegetable tanning materials-natural products primarily used in the leather industry to impart desired characteristics to hides and skins. These materials contain substances with varying composition, concentration, and quality, making systematic testing crucial for consistency and quality.
The practice provides methodologies for determining important chemical properties of vegetable tanning materials, ensuring uniformity in laboratory testing worldwide. All values are expressed in SI units, aligning with global measurement standards.
Key Topics
ASTM D4899-99(2020) addresses several key areas in the chemical analysis of vegetable tanning materials:
- Moisture Content: Methods to accurately quantify moisture in raw and spent tanning materials
- Water-Extractable Substances: Determination of soluble and insoluble materials present in water extracts
- Cold-Soluble Fractions: Analysis of components dissolvable at low temperatures
- Tannins and Non-Tannins: Procedures for differentiating and measuring tannin content and accompanying non-tannin substances
- Acidity: Assessment of acidity in tanning liquors, influencing the tanning process and final leather quality
- Tanning Properties: Evaluation of the tanning efficacy of the material
- Color of Tanned Leather: Testing for the color impact of vegetable tanning agents on tanned leather
- Detection of Admixtures: Identifying the presence or absence of certain additional substances in tanning materials
Applications
ASTM D4899-99(2020) is widely used by manufacturers, quality assurance laboratories, and research institutions involved in the production and analysis of vegetable tanning materials and leather products. Its core applications include:
- Quality Control: Ensuring the consistency, effectiveness, and safety of vegetable tanning materials used in leather processing
- Material Sourcing: Evaluating incoming raw materials for compliance with industry standards
- Research and Development: Supporting the innovation and improvement of vegetable tanning products
- Regulatory Compliance: Meeting national and international requirements for product quality, safety, and trade
- Standardized Communication: Providing a common reference for suppliers, manufacturers, and customers to specify and verify material characteristics
Related Standards
For comprehensive analysis, ASTM D4899-99(2020) references several related ASTM standards and methods from the American Leather Chemists Association (ALCA). Prominent related standards include:
- ASTM D4900: Lignosulfonates in Tanning Extracts
- ASTM D4901: Preparation of Solution of Liquid Vegetable Tannin Extracts
- ASTM D4902: Evaporation and Drying of Analytical Solutions
- ASTM D4903: Total Solids and Water in Vegetable Tanning Material Extracts
- ASTM D6401: Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
- ASTM D6402: Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials
- ASTM D6403: Determining Moisture in Raw and Spent Materials
- ASTM D6404, D6405, D6406, D6407, D6408, D6409, D6410: Various practices and test methods for extraction, sampling, acidity, and metal content in tanning materials
These references establish a comprehensive framework for the accurate and reproducible analysis of vegetable tanning materials, supporting global uniformity and product development in the leather industry.
Keywords: vegetable tanning materials, tannin analysis, leather testing, ASTM D4899, tanning agents, leather chemistry, quality control
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Frequently Asked Questions
ASTM D4899-99(2020) is a standard published by ASTM International. Its full title is "Standard Practice for Analysis of Vegetable Tanning Materials-General". This standard covers: 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.
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.
ASTM D4899-99(2020) 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 D4899-99(2020) has the following relationships with other standards: It is inter standard links to ASTM D6402-99(2009), ASTM D4900-99(2009), ASTM D6408-99(2009), ASTM D6407-99(2009), ASTM D6405-99(2009), ASTM D6409-99(2009), ASTM D4903-99(2009), ASTM D6403-99(2009), ASTM D6401-99(2009), ASTM D6406-99(2009), ASTM D4901-99(2009), ASTM D4902-99(2009), ASTM D4905-99(2009), ASTM D4904-99(2009), ASTM D6404-99(2009). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM D4899-99(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: 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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