Cryolite, natural and artificial — Conventional test for evaluation of free fluorides content
NORMA vydaná dňa 21.10.2009
Designation standards: ISO/TR 4277:2009
Publication date standards: 21.10.2009
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: International technical standard
Kategória: Technické normy ISO
Description / Abstract: ISO/TR 4277:2009 describes a conventional test for the evaluation of the free fluorides content of natural, artificial and recovered cryolite. This method is applicable to products having free fluorides content greater than 0,15 % (mass fraction) of AIF3 or 0,4 % (mass fraction) of NaF.