Educational summary of documented chemical interactions. Do NOT attempt any of these mixtures. If an accidental mix occurs, evacuate, ventilate, and call emergency services. Terms of use.

Chemical mixture

Can you mix Bleach (sodium hypochlorite) and Hydrochloric acid?

Deadly. Do not mix.. Releases chlorine gas immediately.
oxidizer
Bleach (sodium hypochlorite)
CAS 7681-52-9
acid
Hydrochloric acid
CAS 7647-01-0
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What happens

Strong acid rapidly drives hypochlorite to Cl2 gas. Ten ppm is immediately dangerous to life or health.

Reaction products

  • Chlorine (Cl2)
  • Sodium chloride
  • Water

If contact happens

Never combine. Store acids and bleach on separate shelves.

Other common mixtures

See all 35 mixtures →

Educational summary based on public NIOSH, OSHA and CAMEO Chemicals data. Always consult the official Safety Data Sheet before handling.