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SRPS H.B8.357:1982

Boric acid, boric oxide and Disodium tetraborates for industrial use — Determination of manganese content — Formaldehyde oxime photometric method

Apr 26, 1982
Apr 26, 1982
95.99   Withdrawal of Standard   Jan 28, 2013

General information

95.99     Jan 28, 2013

ISS

H047

International Standard

71.060.01  

Serbian  

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Scope

The principle consists in removal of the boron by evaporation with methanol and separation of manganese and other metals from the residue, by extraction with chloroform, as their diethyldithiocarbamates. Wet destruction of the diethyldithiocarbamates with a sulphuric acid/ hydrogen peroxide mixture. Removal of any interfering iron by extraction as the thiocyanate. Formation of the coloured manganese formaldoxime complex in alkaline solution and photometric measurement at a wavelength of approximately 450 nm.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.357:1982
95.99 Withdrawal of Standard
Jan 28, 2013

Related project

Adopted from ISO 2214:1972