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Potassium Fluosilicate

Formula: K₂SiF₆
CAS NO.: 16871-90-2
M.W: 220.25
Properties: White odorless crystals or powder; weak acidity;insoluble in water, aqueous ammonia and ethanol; soluble in hydrochloric acid; decompose by heat to form potassium fluoride(KF) and silicon tetrafluoride(SiF4); hydrolyze in hot water to form hydrogen fluoride(HF) and silicate acid(H2SiO3); have toxic.
Specification:(%)

K2SiF6(based on dry)	98.0 min.
Free acid (HF)	0.15 max.
Water-insoluble matter	0.5 max.
Fe	0.05 max.
Heavy metal (Pb)	0.50 max.
H2O	0.5max.
Size (throug 60mesh)	90 min.

Application: Wood preservation; ceramics made; metallurgy of aluminium and magnesium; optical glass; synthetic mica and antisepsis.
Storage: Store with seal, prevent bag burst.
Packing: 25Kg net, packing with double plastic bags lined plastic woven sack.