ISO-5397 › Leather -- Determination of nitrogen content and hide substance -- Titrimetric method

ISO-5397 - 1ST EDITION - CURRENT


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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.

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59.140.30 (Leather and furs)

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Document Number

ISO 5397:1984

Revision Level

1ST EDITION

Status

Current

Publication Date

March 15, 1984

Committee Number

IULTCS/IULTCS