Properties: Clear or white, rhombohedra or acicular crystal, odorless. The
relative density is 1.788.The melting point is
120°C(decomposition).It is hard to deliquesce. But the crystal
water will be lost under efflorescence. It is decomposed by
dehydration when the temperature is over 80°C, and at the same time
gives out silicon tetrachloride gas. It dissolves easily in water,
also in dilute acids, but hardly dissolves in hydrofluoric acid and
insolubilizes in alcohols. Its water solution presents an acidic
nature. When reacted on alkalis, it will generate relative
fluor----complex and silica. Poisonous!
|Assay (MgSiF6.6H2O)||98.5% min|
|Water-insoluble matter||0.2% max|
Application:Mainly used as a water repellent and a hardener to improve the
hardness and intensity of concrete. Otherwise, it is applied in
surface fluor efflorescence proofing for constructions made of
ganister bricks, the manufacturer of ceramics, insect prevention
for fabrics, and also used as a pesticide.
Storage:Store at a ventilating and dry place, prevent wetting and keep away
from strong inorganic acid and alkali.
Packing:The net weight per bag is 25kg.
UN No. : 2853
Class : 6.1
Packing : III