A colorless, fuming, corrosive, dangerously poisonous aqueous solution of hydrogen fluoride, HF, accustomed etch or polish cup, pickle specific metals, and clean masonry.
A solution of hydrogen fluoride, HF, in water; it really is a weak but extremely corrosive acid, utilized in producing fluorine compounds, plus in metallurgy.
a weak toxic fluid acid; created by solution of hydrogen fluoride in liquid
a colorless, mobile, volatile fluid, HF, very corrosive in its action, and having a stronger, pungent, suffocating smell. It is created by the activity of sulphuric acid on fluorite, and it is often collected as a remedy in water. It strikes all silicates, as glass or porcelain, could be the agent utilized in etching cup, and it is maintained only in vessels of platinum, lead, caoutchouc, or gutta-percha.