Copper Fluosilicate

Name:
Copper Fluosilicate
Detailed information:

Chemistry name:	copper silicofluoride; cupric fluosilicate; cupric silicofluoride
M Formula:	CuSiF6•4H2O
Properties:
Blue, hygroscopic crystals. D 2.158, decomposed by heat. Soluble in water; slightly soluble in alcohol.
Derivation:
Interaction of copper hydroxide and hydrofluosilicic acid.
Method of Purification:
Crystallization.
Grade:
Technical.
Hazard:
A poison. TLV: (F) 2.5 mg/m3.
Use:
Dyeing and hardening white marble, treating grapevines for “white disease.”