ASTM-D3913 Standard Test Method for Acidity in Basic Chromium Tanning Liquors

ASTM-D3913 - 2003 R20(E1) EDITION - CURRENT
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Standard Test Method for Acidity in Basic Chromium Tanning Liquors



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1.1 This test method covers the determination of the titratable acidity of chromium tanning liquors. By titratable acidity is meant not only free acidity, which is rarely present, but also anions combined with weakly basic cations such as Chromium (III), which can be titrated with base at the phenolphthalein end point.

1.2 This standard does not purport to address all of the safety problems, 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.


acidity; basic chromium tanning liquor; basicity; ICS Number Code 59.140.10 (Processes and auxiliary materials)

To find similar documents by ASTM Volume:

15.04 (Soaps and Other Detergents; Polishes; Leather; Resilient Floor Coverings)

To find similar documents by classification:

59.140.10 (Processes and auxiliary materials)

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Document Number


Revision Level

2003 R20(E1) EDITION



Modification Type


Publication Date

April 17, 2020

Document Type

Test Method

Page Count

3 pages

Committee Number