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ISO 5992:1979

Sodium hydroxide for industrial use — Determination of mercury content — Dithizone photometric method

Sep 1, 1979
95.99   Withdrawal of Standard   May 27, 2002

General information

95.99     May 27, 2002

ISO

ISO/TC 47

International Standard

71.060.40  

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Scope

Covers a method applicable to liquid or solid products having mercury contents greater than 0,05 mg/kg. The principle of determination is based on oxidation of the mercury contained in a test portion to mercury(II) ions by potassium permanganate in the presence of sulphuric acid, reduction of the excess oxidant, extraction in chloroform of the complex formed, and photometric measurement of the complex at a wavelength of about 490 nm.

Life cycle

NOW

WITHDRAWN
ISO 5992:1979
95.99 Withdrawal of Standard
May 27, 2002

National adoptions

SRPS H.B8.677:1992  
ISS

Sodium hydroxide for industrial use — Determination of mercury content — Dithizone photometric method

95.99   Withdrawal of Standard

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