Standard

ISO 5549:1978

Jun 1978 Withdrawn

Corrigenda and amendments are bought separately.

Language English

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Abstract

Does not apply to caseins and caseinates containing ammonium caseinate or other ammonium compounds, or other nitrogenous nonprotein compounds. The principle of determination consists in digesting a test portion with a mixture of potassium sulphate and sulphuric acid, in the presence of copper(II) sulphate as catalyst, to convert organic nitrogen into ammoniacal nitrogen, distilling and absorbing the ammonia in boric acid solution, titrating with standard volumetric hydrochloric acid solution and multiplying the resualt by the factor 6.38.

Document information

Standard from ISO
Published: 1 June 1978
Withdrawn: 3 February 2014
Expires: 18 December 1977
Edition: 1
Version: 1
Document type: IS
ISBN:

ICS 67.100.99
ISO TC ISO/TC 34/SC 5

Product Relations

Revised by: ISO 8968-1:2014
Revised by: ISO 8968-1:2014
Revised by: ISO 8968-1:2014

ISO 5549:1978

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Abstract

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