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ISO 1391-5:1981

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Paraformaldehyde for industrial use Methods of test Determination of aldehyde content Titrimetric method

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

26-02-2019

Language(s)

English, French

Published date

01-05-1981

The method is applicable to solid paraformaldehyde of aldehyde contents in the range 67 % (m/m) to 97 % (m/m). The principle consists in the reaction of aldehyde present in a test portion with neutralized sodium sulphite solution. Titration of the liberated sodium hydroxide with sulphuric acid solution using thymolphthalein as indicator. - This document has also been approved by the IUPAC.

DocumentType
Standard
Pages
2
PublisherName
International Organization for Standardization
Status
Withdrawn

Standards Relationship
NBN T 04 035 : 1983 Identical
NFT 20 751 : 1984 Identical

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$118.72
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