ISO 5397:1984

Leather — Determination of nitrogen content and "hide substance" — Titrimetric method

Publication date: Mar 1, 1984

General information

Current stage: 90.93 Effective date: Jun 5, 2021

Originator: ISO

Owner: IULTCS

Type: International Standard

ICS: 59.140.30

Languages: French English

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Status: Published

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Scope

The principle consists in decomposition of a test portion by Kjeldahl method, distillation of the ammonia liberated, determination of the nitrogen content by titration of the ammonia with sulfuric or hydrochloric acid, using phenolphthalein as indicator. The method is applicable to all types of leather in all types of tannage.

Life cycle

NOW

PUBLISHED
ISO 5397:1984
90.93 Standard confirmed
Jun 5, 2021

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