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    ASTM D4899 - 99(2020)

    Standard Practice for Analysis of Vegetable Tanning Materials—General

    Active Standard ASTM D4899 | Developed by Subcommittee: D31.01

    Book of Standards Volume: 15.04

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    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.

    1. 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.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D4900 Test Method for Lignosulfonates (Sulfite Cellulose) in Tanning Extracts

    D4901 Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts

    D4902 Test Method for Evaporation and Drying of Analytical Solutions

    D4903 Test Method for Total Solids and Water in Vegetable Tanning Material Extracts

    D4904 Practice for Cooling of Analytical Solutions

    D4905 Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts

    D6401 Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials

    D6402 Test Method for Determining Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials

    D6403 Test Method for Determining Moisture in Raw and Spent Materials

    D6404 Practice for Sampling Vegetable Materials Containing Tannin

    D6405 Practice for Extraction of Tannins from Raw and Spent Materials

    D6406 Test Method for Analysis of Sugar in Vegetable Tanning Materials

    D6407 Test Method for Analysis of Iron and Copper in Vegetable Tanning Materials

    D6408 Test Method for Analysis of Tannery Liquors

    D6409 Practice for Color Tests with Sheepskin Skiver

    D6410 Test Method for Determining Acidity of Vegetable Tanning Liquors

    ICS Code

    ICS Number Code 59.140.10 (Processes and auxiliary materials)

    UNSPSC Code

    UNSPSC Code 31221603(Organic tanning extracts of vegetable origin)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D4899-99R20

    Citation Format

    ASTM D4899-99(2020), Standard Practice for Analysis of Vegetable Tanning Materials—General, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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