ASTM D6407 - 99(2009)

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

    Active Standard ASTM D6407 | Developed by Subcommittee: D31.01

    Book of Standards Volume: 15.04


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    Significance and Use

    This test method is used to determine the quantity of iron and copper present in vegetable tanning materials or vegetable tannin extracts prepared using Practices D 4901, D 6404, or D 6405.

    Because of the possibility of errors in this test method it is essential that the method be followed exactly in order to obtain reproducible results both among specimens within a laboratory and for analyses between laboratories.

    1. Scope

    1.1 This test method is intended for use in determining iron and copper content in vegetable tanning materials. This test method is applicable to liquid, solid, pasty and powdered extracts, to raw and spent materials, and to tannery liquors.

    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 and health practices and determine the applicability of regulatory limitations prior to use.


    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

    D4901 Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts

    D4902 Test Method for Evaporation and Drying of Analytical Solutions

    D6404 Practice for Sampling Vegetable Materials Containing Tannin

    D6405 Practice for Extraction of Tannins from Raw and Spent Materials

    ALCA Methods

    A31 Method for Copper and Iron in Tanning Materials Official Methods of the American Leather Chemists Association. Available from the American Leather Chemists Association, University of Cincinnati, P.O. Box 210014, Cincinnati, OH 45221-0014.


    ICS Code

    ICS Number Code 59.140.10 (Processes and auxiliary materials)

    UNSPSC Code

    UNSPSC Code 31221603(Organic tanning extracts of vegetable origin)


    DOI: 10.1520/D6407-99R09

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