Hydrogen Fluoride (HF)

CAS ID#: 7664-39-3

Affected Organ Systems: None

Cancer Classification: Please contact NTP, IARC, or EPA with questions on cancer and cancer classification.

Chemical Classification: Inorganic substances

Summary: Hydrogen fluoride is a colorless, fuming liquid or gas with a strong, irritating odor. It is usually shipped in steel cylinders as a compressed gas. Hydrogen fluoride readily dissolves in water to form colorless hydrofluoric acid solutions; dilute solutions are visibly indistinguishable from water.

Emergency Responders

Medical Management Guidelines (MMG) for Acute Chemical Exposure - Publication intended to aid emergency department physicians and other emergency healthcare professionals who manage acute exposures resulting from chemical incidents.

Page last reviewed: February 10, 2021

Content source: Agency for Toxic Substances and Disease Registry