Hydrofluoric acid

Safety Summary

Regulatory Status

Sources

These citations are the ones recorded for the human adult context.

• NIOSH Pocket Guide: Hydrofluoric Acid — IDLH 30 ppm; systemic fluoride toxicity; cardiac arrhythmia; calcium gluconate treatment; occupational burns; semiconductor/petroleum refining uses (2019) REGULATORY · 2019
• ATSDR Toxicological Profile for Fluorides, Hydrogen Fluoride, and Fluorine — systemic fluoride toxicity; hypocalcemia mechanism; lethal dose estimates; dermal burn management; bone fluoride accumulation (2003) REGULATORY · 2003
• § 1910.1000 Air contaminants. REGULATORY
• identity database ECHA CHEM, Download all substances: REACH registrations (ECHA's own list of REACH-registered substances) REGULATORY · 2026
• NIOSH Pocket Guide to Chemical Hazards - Hydrogen fluoride (7664-39-3) (reached from the NPG index default.html -> npgdcas.html / npgsyn-*.html) REGULATORY
• Consolidated TEXT: 32000L0039 — EN — 20.05.2021 REGULATORY
• OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY
• where to look CAMEO Chemicals, as recorded by PubChem (Experimental Properties, CID 14917; where-to-look, not a source of this value) DATABASE · 2026
• where to look Hazardous Substances Data Bank (HSDB), as recorded by PubChem (Experimental Properties, CID 14917; where-to-look, not a source of this value) DATABASE · 2026
• ECHA Annex VI to CLP: the unofficial Excel table (up to and including the 23rd ATP) REGULATORY

Same data as the API response, which is open and needs no key. The full per-record source list is available to authenticated callers.