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ISO 3122:1976

Boric acid, boric oxide, disodium tetraborates, sodium perborates and crude borates for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method

Apr 1, 1976
95.99   Withdrawal of Standard   May 27, 2002

General information

95.99     May 27, 2002

ISO

ISO/TC 47

International Standard

71.060.01  

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Scope

Preliminary reduction of the iron(III) by hydroxylammonium chloride, if required, suppression of the interference of tin by oxalic acid. Formation of the coloured iron(III)-2,2'-dipyridyl complex in a buffered medium. Photometric measurement of the coloured complex at a wavelength of about 522 nm.

Life cycle

NOW

WITHDRAWN
ISO 3122:1976
95.99 Withdrawal of Standard
May 27, 2002

National adoptions

SRPS H.B8.352:1982  
ISS

Boric acid, boric oxide, disodium tetraborates, sodium perborates and crude borates for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method

95.99   Withdrawal of Standard

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