This test method provides the means to determine nitrogen containing water extractable materials such as excess and loosely bound tannins, ammonium salts, and nitrates.

1. Scope

1.1 This test method covers quantitatively determining the water extractable nitrogen in leather.

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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D2868 Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, Wet Blue and Wet White

D2876 Test Method for Water-Soluble Matter of Vegetable-Tanned Leather

D3495 Test Method for Hexane Extraction of Leather

D3790 Test Method for Volatile Matter (Moisture) of Leather by Oven Drying

Federal Standard

Keywords

ammonium salts; leather; nitrates; nitrogen; tannins; water absorption; water extractable ; Ammonium salts; Leather; Nitrates; Nitrogen; Tanning analysis/materials; Water absorption; Water-extractable matter/processing

ICS Code

ICS Number Code 59.140.30 (Leather and furs)

Citing ASTM Standards

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