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Sodium Hexafluorosilicate (Sodium fluosilicate). PELCHEM product data and uses.
http://www.pelchem.co.za/sodium_silicofluoride.html
From PELCHEM website.
Sodium Hexafluorosilicate
Identification of Substance
Synonyms: Sodium silicofluoride; Sodium silica fluoride; Sodium fluorosilicate
Chemical Formula: Na2SiF6 UN No: 2674 HS Code: 2826 20 00
CAS No: 16893-85-9
Applications / Markets
Fluoridation of drinking water
Insecticides
Leather and wood preservative
Glass etching
Laundry sours
Vitreous enamel frits
Physical & Chemical Properties Form: Crystalline Colour: White powder
Odour: Slightly pungent
Density: Typical Pour density: 1340 kg/m3;
Typical Tap density: 1590kg/m3
Molecular Weight: 188.06
Melting Point: Decomposition starts at 500oC
Boiling Point: -
Vapour Pressure: -
Specifications Purity: >99.0%
Packaging Type & Sizes 25kg Polypropylene bags