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Test Method for Determination of Chromic Oxide in Basic Chromium Tanning Liquors (Ammonium Persulfate Oxidation)
Translate name
STANDARD published on 1.4.2020
Designation standards: ASTM D6019-20
Publication date standards: 1.4.2020
SKU: NS-993167
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
ammonium persulfate, basic chromium tanning liquors, chrome oxide, reacidified chrome, recycled chrome,, ICS Number Code 59.140.10 (Processes and auxiliary materials), 71.040.40 (Chemical analysis)
Significance and Use |
4.1 The procedure described is for the quality control for manufacturing liquors and specifications for the purchase of such liquors. 4.2 The chromium content of the liquors determines the amount to be used to obtain the desired degree of tannage, and hence may be a matter for specification in the purchase of leather. |
1. Scope |
1.1 This test method covers the determination of chromic oxide in chrome tanning liquors, either simple, with added aluminum or zirconium, or with the usual masking complexing agents. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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