Methods of test for aluminium fluoride for industrial use. Determination of iron content.
NORMA vydaná dňa 28.2.1974
Označenie normy: BS 4993-2:1974
Dátum vydania normy: 28.2.1974
Počet strán: 10
Približná hmotnosť: 30 g (0.07 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
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. Status: Confirmed