Formula: K₂SiF₆
CAS: 16871-90-2
EC No.: 240-896-2
M (Molar Mass): 220.27 g/mol
D (Density): 2.27 g/cm³
mp (Melting Point): Decomposes on heating
bp (Boiling Point): Not applicable
Optical Rotation: Not applicable
Chemicals Properties
Assay (Gravimetric as K₂SiF₆): ≥ 98.0 %
Appearance: White crystalline powder.
Identification: Passes test (hydrolyzes to silica and HF).
Solubility: Slightly soluble in water.
Chloride (Cl): ≤ 0.02 %
Sulfate (SO₄): ≤ 0.05 %
Heavy Metals (as Pb): ≤ 20 ppm
Hazard Information
Hazard: Toxic if swallowed, in contact with skin or if inhaled. Reacts violently with water to release toxic and corrosive gases (HF).
Safety: Do not breathe dust. Wear protective gloves, protective clothing, eye protection, and face protection. Use only in a fume hood.
Storage: Store in a tightly closed container in a cool, dry, well-ventilated place. Keep away from moisture and acids.
