Disodium hexafluorosilicate

Silicon tetrafluoride, for laboratory use, can be obtained from fluorosilicic acid1 or by thermolysis at 450-600°C of barium or disodium hexafluorosilicate.2 3 However, the most conventional synthesis of pure silicon tetrafluoride is by fluorination of silicon tetrachloride with sodium fluoride in acetonitrile.4... 

Silicon tetrafluoride, fluorosilicic acid, and barium and disodium hexafluorosilicate are poisonous. In mice, the oral LD50 value for disodium hexafluorosilicate is 61 mg kg-. 6... 

Disodium and barium hexafluorosilicate can also be used as fluorinating agents. High purity disodium hexafluorosilicate can be obtained from high purity diammonium hexafluorosilicate and sodium chloride. Diammonium hexafluorosilicate for this process is purified by sublimation.14... 

Disodium hexafluorosilicate converts phthaloyl chloride into phthaloyl fluoride in 51.5 % yield.15 Disodium and barium hexafluorosilicate can be used for the preparation of chloro-fluoromethanes. Thus, heating carbon tetrachloride with disodium hexafluorosilicate or barium hexafluorosilicate in an autolave under high pressure gives a mixture where dichlorodi-... 

Reaction of disodium hexafluorosilicate with (trichloromethyl)benzene at 221 C for 10 hours affords a mixture in which (chlorodifluoromethyl)benzene (35 %) predominates over (dichloro-fluoromethyl)benzene (15%) and (trifluoromethyl)benzene (0.5%).15 In contrast, addition of antimony(V) chloride to the reaction of l-chloro-4-(trichloromethyl)benzene with disodium hexafluorosilicate increases the yield of l-chloro-4-(trifluoromethyl)benzene.lb... 

AI3-01501 Caswell No, 771 Destruxol applex Disodium hexafluorosilicate Disodium hexafluorosilioate (2-) Disodium silicofluoride EINECS 240-934-8 Ens-zem weevil bait ENT 1,501 ... 

Synonyms Disodium hexafluorosilicate Disodium silicofluoride Silicate, hexafluoro-, disodium Silicon sodium fluoride Sodium fluorosilicate (INCI)... 

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