Explanatory notes
… the neutral fluoride (NH 4 F) and the acid fluoride (NH 4 F.HF). These occur in deliquescent, colourless, toxic … the neutral fluoride (NaF) and the acid fluoride (NaF.HF). Obtained by calcining natural calcium fluoride of … crystals, very soluble in water. Also an acid fluoride (KF.HF). Same uses as sodium fluorides. In addition, the acid …
