ASTM D 3913 : 1993 : R1998
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Acidity in Basic Chromium Tanning Liquors
Hardcopy , PDF
11-11-2014
English
10-01-1998
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
D 31
|
| DocumentType |
Test Method
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| Pages |
2
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy |
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.
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