Hexafluorophosphoric acid
Agent Name
Hexafluorophosphoric acid
CAS Number
16940-81-1
Formula
F6-P.H
Major Category
Other Classes
Synonyms
Fluorophosphoric acid (HPF6); Hydrogen hexafluorophosphate; Hydrogen hexafluorophosphate(1-); Phosphate(1-) hexafluoro-, hydrogen; [ChemIDplus] UN1782
Category
Fluorides, Inorganic
Description
65% solution: Colorless fuming liquid; [Hawley] 60% aqueous solution: Colorless liquid; [MSDSonline]
Sources/Uses
Used in metal cleaners and in electrolytic or chemical polishing agents for formation of protective coatings for metal surfaces; Also used as a catalyst, fluorinating agent, fungicide, and to make many hexafluorophosphates; [HSDB]
Comments
A strong irritant; [Hawley] Corrosive to tissue; [CAMEO] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [MSDSonline] See "FLUORIDES."
Biomedical References
Exposure Assessment
TLV (ACGIH)
2.5 mg/m3, as F
PEL (OSHA)
2.5 mg/m3, as F
MAK
1 mg/m3, inhalable fraction, as F
IDLH (NIOSH)
250 mg/m3, as F
Adverse Effects
Toxic Pneumonitis
Yes
Dermatotoxin
Skin burns
Diseases, Processes, and Activities Linked to This Agent
Processes
Industrial Processes with risk of exposure: