ASTM International - ASTM D3913-03(2015)

Standard Test Method for Acidity in Basic Chromium Tanning Liquors

inactive

Organization:	ASTM International
Publication Date:	1 September 2015
Status:	inactive
Page Count:	3
ICS Code (Processes and auxiliary materials):	59.140.10

significance And Use:

4.1 The acidity of a chrome tanning liquor, as determined by this test method, is rarely employed as such. This result is normally combined with the results of a chromium analysis (see Test Method... View More

scope:

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 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.

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