Chemical (CAS#)

Hydrocyanic acid, Aqueous Solution (74-90-8)


  • Inhalation Hazard
  • Poison


 CHN (aqueous)


Clear colorless aqueous solution of a gas.


Apply FAST-ACT powder to fully cover liquid spill and absorb excess liquid. Pressurized cylinder can be used for vapor reduction.


Adsorption/decomposition: magnesium cyanide (reactive with water)

Primary Mechanism Type



Magnesium cyanide (reactive with water)

Disposal Notes

Evaluate for Paint Filter Test & Flash Point. Dispose in landfill if characteristic hazard does not exist. 

Reaction Rate (Slower to Faster)

Reaction Rate: 5


FAST-ACT Application Methods:


C. For liquid contamination, directly apply the FAST-ACT Powder from a Shaker or Pail to the liquid to fully absorb the compound ensuring no liquid chemical remains. Apply powder forming a ring around the hazard and then shake the powder directly onto hazard to thoroughly cover the liquid. Carefully agitate all the powder to ensure all liquid has been adsorbed.

D. For vapor contamination, utilize a FAST-ACT Pressurized Cylinder to dispense the product into the airspace: Shake the FAST-ACT Pressurized Cylinder to loosen the contents. Pull the ring pin. Squeeze the lever and shake the cylinder in up and down motion to ensure maximum discharge of the FAST-ACT powder. Aim the hose and mist all powder in the direction of hazard. If liquid hazard is also present, sweep hose side to side to ensure complete coverage of liquid hazard.