Magnesium fluosilicate

 

Molecular formula: MgSiF6? 6H2O

 

Molecular weight: 274.48

 

Danger number: 2853

 

Risk Level: 6.1

 

Physicochemical properties: white rhombic or acicular crystals, odorless, relative density is 1.788, melting point is 120 C. It can be weathered and lose crystalline water. It is soluble in water, dilute acid, hydrofluoric acid and alcohol. The aqueous solution is acidic. The corresponding fluoride and silica can be formed when reacting with alkali. Toxic.

 

Usage: Mainly used to improve the hardness and strength of concrete, play a waterproof and hardening role, is a good hardener and waterproof agent. It can also be used for fluoride weathering on the surface of silica buildings and as pesticides.

 

Quality standards:

 

Indicator Name Indicator

 

Magnesium fluosilicate (MgSiF6). 6H_2O)>98.5

 

Magnesium sulfate (MgSO4). 7H_2O) = 0. Three

 

Fluorosilicic acid (H2SiF6) = 0. Five

 

Moisture < 0.51.0

 

Water insoluble matter < 0.2

 

Packaging and storage: Wrapped in woven bags lined with polyethylene plastic bags, each bag weighs 25kg net. Storage should be ventilated and dry.