Potassium Hexafluorosilicate
Molecular Formula:K2SiF6
CAS NO.: 16871-90-2
Molecular Weight:220.26
Property:White crystal or powder. Odourless and tasteless. Slightly acidic.hygroscopicity. Slightly soluble in water and soluble in hydrochloric acid but Insoluble in alcohol, the increase of solubility with temperature increased slightly. into potassium fluoride, hydrogen fluoride and silicate hydrolised in water. potassium fluoride and silicon tetrafluoride decomposed at burning.
Specification:
|
Impurity name
|
Index
|
|
Assay(K2SiF6)
|
98% min.
|
|
Free Acid (HF)
|
0.15% max.
|
|
Water insoluble matter
|
0.5% max.
|
|
Iron (Fe)
|
0.001% max.
|
|
Lead (Pb)
|
0.5% max.
|
|
Chloride (Cl)
|
0.15% max.
|
|
Sulfate (SO4)
|
0.1% max.
|
|
Moisture (H2O)
|
0.5% max.
|
|
+60 Mesh
|
90% min.
|
Usage:Used for wood preservation, ceramic manufacturing as well as aluminum and magnesium smelting, agricultural pesticides, also used in optical glass manufacture, synthetic mica and enamel, etc.
Packing :25KGS compound bag, 25KGS plastic woven bag.
Caution at transportation:Must be kept from moisture.
Hazardous details:Inorganic toxicant , UN No.:2655 , Class: 6.1 , Packing group: Ⅲ
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