ASTM International - ASTM D3897-91(2012)
Standard Practice for Calculation of Basicity of Chrome Tanning Liquors
| Organization: | ASTM International |
| Publication Date: | 1 April 2012 |
| Status: | inactive |
| Page Count: | 2 |
| ICS Code (Processes and auxiliary materials): | 59.140.10 |
significance And Use:
Basicity is a ratio. In any chromic salt solution, the electrovalence of the chromium (+3) is satisfied by the hydroxyl ions and by acid ions. The extent to which this electravalence is satisfied... View More
scope:
1.1 This practice is intended to show how the results of the chromium analysis (Test Method D3898) and the acidity determination (Test Method D3913) can be combined to permit calculation of the basicity of a chrome tanning liquor.
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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