ASTM D4654

This test method is used to determine the percent of total chromic oxide that is combined with hydroxyl and may serve as a measure of chrome fixation.

1. Scope

1.1 This test method is intended for use in calculating the sulfate basicity of mineral tanned leather.

1.2 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.

2. Referenced Documents

ASTM Standards
D2807 Test Method for Chromic Oxide in Leather (Perchloric Acid Oxidation)
D4655 Test Methods for Sulfates in Leather (Total, Neutral, and Combined Acid)

Index Terms

chrome fixation; Schorlemmer's system; sulfate basicity; Acidity, alkalinity, pH--leather; Chrome-tanning materials; Hydroxyl numbers; Leather; Schorlemmer's system; Sulfate content--leather; ICS Number Code 59.140.30 (Leather and furs)

Citing ASTM Standards

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