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SRPS ISO 3196:2016

Sodium hydroxide for industrial use — Determination of carbonates content — Titrimetric method

Jul 28, 2016
Jul 28, 2016

General information

90.93     Oct 20, 2023

90.20    Oct 15, 2028

ISS

H047

International Standard

71.060.40  

Serbian  

Plan za 2013. godinu.

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Published

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Scope

Applicable to products having contents, expressed as CO2 , of more than 0.01 % (m/m). Relates to a procduct containing neither sulphides nor chlorates or only sulphides or only chlorates. Preliminary test by boiling an acidified test sample in the presence of methyl orange and with a lead acetate paper strip in the vapour. The sulphides blacken the paper and chlorates delolourize the methyl orange. Products containing neither sulphides nor chlorates: liberation of carbon dioxide by acidification and heating. Entrainment in a flow of gas and absorption in an excess of barium hydroxide solution. Titration of the excess barium hydroxide solution with a standard volumetric hydrochloric acid solution in the presence of thymolphthalein as indicator.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS H.B8.663:1992

NOW

PUBLISHED
SRPS ISO 3196:2016
90.93 Standard confirmed
Oct 20, 2023

Related project

Adopted from ISO 3196:1975