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SRPS H.B8.661:1992

Sodium hydroxide for industrial use — Method of assay

Apr 7, 1992
Apr 7, 1992
95.99   Withdrawal of Standard   May 31, 2016

General information

95.99     May 31, 2016

ISS

H047

International Standard

71.060.40  

Serbian  

Standard je preispitan i potvrđen u maju 2012. godine.

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Scope

Method for determination of the titre; this is expressed conventionally as percentages by mass of NaOH, a) as total alkalinity and b) as caustic alkalinity, corresponding to the total alkalinity less the alkalinity due to carbonates. The principle consists in titration of the total alkalinity with standard volumetric hydrochloric acid solution in the presence of methyl orange as indicator. Calculation of the two amounts a) and b). The mass of carbon dioxide is determined by the method specified in ISO 3196. This method has also been approved by the IUPAC. - Cancels and replaces ISO Recommendation R 979-1969 of which it constitutes a technical revision.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.661:1992
95.99 Withdrawal of Standard
May 31, 2016

REVISED BY

PUBLISHED
SRPS ISO 979:2016

Related project

Adopted from ISO 979:1974