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SRPS H.B8.680:1992

Sodium hydroxide for industrial use — Determination of chlorides content — Photometric method

Apr 7, 1992
Apr 7, 1992
95.99   Withdrawal of Standard   Jan 28, 2013

General information

95.99     Jan 28, 2013

ISS

H047

International Standard

71.060.40  

Serbian  

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Scope

Applicable to products having contents, expressed as chlorine, between 2 mg/kg and 50 mg/kg. For contents exceeding 50 mg/kg the method specified in ISO 981 shall be used. The principle consists in the quantitative displacement of the thiocyanate ions of the mercury(II) thiocyanate by the cloride ions contained in the test portion. Reaction of the thiocyanate ions with iron(III) nitrate to form iron(III) thiocyanate (red). Photometric measurement of the colour at a wavelength of about 450 nm.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.680:1992
95.99 Withdrawal of Standard
Jan 28, 2013

Related project

Adopted from ISO 3197:1975