Hydrogen cyanide

CAS RN: 74-90-8

Odor Threshold

Approximately 60 to 70% of the population can detect the bitter almond odor of hydrogen cyanide. The odor threshold for those sensitive to the odor is estimated to be 1 to 5 ppm in the air. However, even at high toxic concentrations, up to 20% of all individuals are genetically unable to smell hydrogen cyanide.
Detection in air of hydrogen cyanide of an unspecified purity or grade: 1X10-3 mg/L.
High odor threshold was 5 mg/cu m; Low odor threshold was 0.9 mg/cu m.
Find more information on this substance at: PubChem, PubMed