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 Hydrochloric acid and Sodium cyanide?
☠Deadly. Do not mix.. Releases hydrogen cyanide gas.
salt
Sodium cyanide
CAS 143-33-9
What happens
Any acid stronger than HCN liberates HCN gas from cyanide salts. HCN is lethal at 100 to 300 ppm within minutes.
Reaction products
- Hydrogen cyanide (HCN)
- Sodium chloride
If contact happens
Cyanide waste must be alkaline. Never store near acids. Emergency response requires SCBA.
Other common mixtures
Bleach (sodium hypochlorite) + Ammonia☠Bleach (sodium hypochlorite) + Vinegar (acetic acid)☠Bleach (sodium hypochlorite) + Hydrochloric acid☠Bleach (sodium hypochlorite) + Isopropyl alcohol⚠Bleach (sodium hypochlorite) + Ethanol⚠Bleach (sodium hypochlorite) + Hydrogen peroxide⚠Bleach (sodium hypochlorite) + Acetone⚠Hydrochloric acid + Sodium hydroxide!Sulfuric acid + Sodium hydroxide⚠
See all 35 mixtures →Educational summary based on public NIOSH, OSHA and CAMEO Chemicals data. Always consult the official Safety Data Sheet before handling.