Safety
Hexafluorosilicic acid releases hydrogen fluoride when evaporated, so it has similar risks. It is corrosive and may cause fluoride poisoning; inhalation of the vapors may cause lung edema. Like hydrogen fluoride, it attacks glass and stoneware. LD50 value of hexafluorosilicic acid is 70 mg/kg (example LD50 for caffeine is 127 mg/kg).
Read more about this topic: Hexafluorosilicic Acid
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