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CarCareTruth

Ammonium Bifluoride

  • Acids
  • CAS 1341-49-7
  • IUPAC: azanium fluoride

Ammonium Bifluoride (CAS 1341-49-7) appears in 4 of the 2,122 car-care products CarCareTruth tracks (as of August 2026).

SERIOUS HAZARD — toxic if swallowed (H301), toxic in contact with skin (H311), toxic if inhaled (H331). Causes severe skin burns and eye damage (H314, H318). Causes damage to organs through prolonged exposure (H372). HF (hydrofluoric acid) is released on skin contact — delayed HF burns can occur from diluted solutions without immediate pain. Signal word DANGER.

Ammonium bifluoride is the active fluoride agent in many professional wheel cleaners. It dissolves iron brake dust and aluminum oxide via fluoride chemistry. This is a SERIOUS HAZARD ingredient — HF (hydrofluoric acid) is released on skin contact with moist surfaces.

SDS caution: many consumer-grade SDSs list only H302/H312 and omit H314/H318 for diluted formulations. Always cross-check with the industrial/professional SDS. Skin contact with diluted solutions can cause delayed HF burns that are not immediately painful.

Regulatory status

  • Not California Prop 65 listed: no entry for ammonium bifluoride, CAS 1341-49-7, hydrogen fluoride, or hydrofluoric acid on the OEHHA list (checked against both the repo's own data/prop65/oehha-list.json, 986 entries as published 2025-12-05, and the live OEHHA list at oehha.ca.gov). The only fluoride-containing entries on the list are vinyl fluoride (CAS 75-02-5) and PCBTF (CAS 98-56-6), neither related to this substance.
  • EU SDS must disclose per REACH

Sources

  • OEHHA Proposition 65 list cross-check: data/prop65/oehha-list.json (source https://oehha.ca.gov/sites/default/files/media/2025-01/p65chemicalslist.csv, list published 2025-12-05) and a live pull from oehha.ca.gov/proposition-65/proposition-65-list, both checked 2026-07-31. No match by name or CAS 1341-49-7.
  • Hazard/health/environment data (H301/H311/H331/H314/H318/H372, HF-release mechanism, aquatic toxicity, env_score) unchanged from the prior sourcing pass; not re-verified in this correction, which is scoped to the Prop 65 flag only.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
yes
Biodegradable
no
Bioaccumulative
no
Persistent
yes
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
1/5
Purpose: Active fluoride agent in wheel cleaners and rust removers; dissolves iron brake dust and aluminum oxide via fluoride chemistry

Common questions about Ammonium Bifluoride

What is Ammonium Bifluoride used for in car care?
Active fluoride agent in wheel cleaners and rust removers; dissolves iron brake dust and aluminum oxide via fluoride chemistry
Is Ammonium Bifluoride a VOC?
No. Ammonium Bifluoride is not classified as a volatile organic compound (VOC).
Is Ammonium Bifluoride on California's Proposition 65 list?
No. Ammonium Bifluoride is not on California's Proposition 65 list.

4 products contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.