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ISO 6191:1981

Withdrawn

Withdrawn

Light olefins for industrial use — Determination of traces of water — Karl Fischer method

Available format(s)

Hardcopy , PDF

Language(s)

English, French

Published date

08-01-1981

Withdrawn date

02-20-2019

US$96.00
Excluding Tax where applicable

Describes a method applicable to products having water contents between 10 and 100 mg/kg. Specifies the manner of applications of the Karl-Fischer method, whose principle and chemical reaction are given in ISO 760 which should also be used for higher water contents as sampling is not valid when there is a risk that condensation of water may occur. The principle consists in absorbing the traces of water in a test portion in a solvent to which a sufficient quantitty of Karl-Fischer reagent has been added so that there is neither an excess of water nor an excess of the Karl Fischer reagent, when the solvent is said to be at the equivalence point.

Committee
ISO/TC 47
DocumentType
Standard
Pages
8
PublisherName
International Organization for Standardization
Status
Withdrawn
Supersedes

Standards Relationship
NBN T 04 501 : 1985 Identical

ISO 3165:1976 Sampling of chemical products for industrial use — Safety in sampling
ISO 760:1978 Determination of water — Karl Fischer method (General method)

US$96.00
Excluding Tax where applicable