BS 4993-2:1974

This standard BS 4993-2:1974 Methods of test for aluminium fluoride for industrial use is classified in these ICS categories:

• 71.060.50 Salts

This Part of BS 4993 specifies a photometric method for the determination of the iron content of aluminium fluoride for industrial use.

NOTE The titles of the British Standards referred to in this standard are listed on the inside back cover.

Dissolution of a test portion after alkaline or acid fusion and reduction of iron (III) to iron (II) with hydroxylammonium chloride. Formation of the iron (II) 1,10-phenanthroline complex and photometric measurement at 510 nm.