Liquefied anhydrous ammonia for industrial use Determination of water content Karl Fischer method

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

06-06-1985

Publisher

International Organization for Standardization

A test portion is evaporated in the presence of ethanediol and the water content of the residue is determined by the Karl Fischer method with direct electrometric measurement. The method is applicable to products having water contents equal to or greater than 50 mg/kg. For water contents greater than 1000 mg/kg it is preferable to dilute the evaporation residue with anhydrous methanol in accordance with ISO 4276 and titrate an aliquot portion of the diluted solution.

DocumentType	Standard
Pages	4
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
NFT 20 342 : 1986	Identical
NBN T 03 094 : 1988	Identical
BS 4431:1969	Similar to

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