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ISO 2362:1972

Aluminium fluoride for industrial use — Determination of fluorine content — Modified Willard-Winter method

Dec 1, 1972
95.99   Withdrawal of Standard   May 27, 2002

General information

95.99     May 27, 2002

ISO

ISO/TC 47

International Standard

71.060.50  

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Scope

The principle of the method consists in fusion of a test portion with sodium carbonate. Separation of fluorine by distillation with sulphuric acid. Titration with thorium nitrate solution using sodium alizarinsulphonate-methylene blue as indicator. Alternatively, the thorium nitrate titration may be made using only sodium alizarinsulphonate; the end-point being spectrophotometrically determined at 525 nm.

Life cycle

NOW

WITHDRAWN
ISO 2362:1972
95.99 Withdrawal of Standard
May 27, 2002

National adoptions

SRPS H.B8.187:1979  
ISS

Aluminium fluoride for industrial use — Determination of fluorine content — Modified Willard-Winter method

95.99   Withdrawal of Standard

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