The effects may be delayed after exposure. Do not eat, drink, or smoke when using HF. HF is corrosive to metals. Hydrogen fluoride is an Extremely corrosive chemical. The vapor or liquid can cause ...

Although chemists consider hydrofluoric acid (HF) to be a “weak” acid, its potential to produce serious health effects greatly exceeds that of “strong” acids commonly used in the laboratory. HF shares ...

THROUGH the courtesy of the editor of NATURE we have been able to see an advance proof of the letter of MM. Urbain and Dauvillier (NATURE, February 17, p. 218), and are glad to have the ...