ASTM D6401-99(2020) PDF

Scope: 1.1 This test method is intended for use in determining the quantity of soluble non-tannins and tannin in solutions of tannin extracts, water extracts of vegetable tanning materials, or tanning liquors. The method is applicable to the analysis of liquid, solid, pasty, and powdered extracts and to extracts of raw or spent materials. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses after SI units are for information only and are not considered 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.

ASTM D6401-99(2020) Referenced Document

ASTM A22 Specification for Cold-Rolled Steel Axles
ASTM D2617 Standard Test Method for Total Ash in Leather
ASTM D3790 Standard Test Method for Volatile Matter (Moisture) of Leather by Oven Drying
ASTM D4901 Standard Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts
ASTM D4902 Standard Test Method for Evaporation and Drying of Analytical Solutions
ASTM D4903 Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts
ASTM D4905 Standard Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts
ASTM D6402 Standard Test Method for Determining Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials
ASTM D6405 Standard Practice for Extraction of Tannins from Raw and Spent Materials

2020 ASTM D6401-99(2020) Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
1999 ASTM D6401-99(2016) Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
1999 ASTM D6401-99(2009) Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
1999 ASTM D6401-99(2004) Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
1999 ASTM D6401-99 Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials