Fluorosilicic acid (H2SiF6) is the most commonly used chemical to fluoridate municipal water supplies. Sodium fluoride is the most common chemical used to add fluoride to toothpaste.
What is the form of fluoride that they like to poison water supplies with?
HF, according to a YT documentary I saw about the Toronto municipal water supply system. They said so explicitly, and showed the metering valve slowly admitting HF into the supply stream after purification steps were complete.
Fluorosilicic acid (H2SiF6) is the most commonly used chemical to fluoridate municipal water supplies. Sodium fluoride is the most common chemical used to add fluoride to toothpaste.