ASTM D6656-01 - 10.5.2001
 
1. Scope

1.1 This test method covers the determination of chromic oxide in wet blue that has been partly or completely tanned with chromium compounds. In general, the samples will contain chromium content between 1 % and 5 % when calculated as chromic oxide expressed upon a dry basis otherwise referred to as moisture-free basis (mfb).

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. See Section for 9 specific safety hazards.

 
2. Referenced Documents

D6659-16(2026)

Standard Practice for Sampling and Preparation of Wet Blue and Wet White for Physical and Chemical Tests

E691-23

Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

D6658-24

Standard Test Method for Volatile Matter (Moisture) of Wet Blue by Oven Drying

E177-26a

Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods (Includes all amendments and changes 5/14/2026).

E180-03

Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals (Withdrawn 2009)