Skin/Eye ContactĮxposure to hydrogen cyanide can cause skin and eye irritation. Hydrogen cyanide is lighter than air (HSDB 2007).Ĭhildren exposed to the same levels of hydrogen cyanide as adults may receive larger doses because they have greater lung surface area:body weight ratios and increased minute volumes:weight ratios.
Perception of the odor is a genetic trait (20-40% of the general population cannot detect hydrogen cyanide) also, rapid olfactory fatigue can occur. The odor of hydrogen cyanide is detectable at 2-10 ppm (OSHA PEL = 10 ppm), but does not provide adequate warning of hazardous concentrations. Hydrogen cyanide is readily absorbed from the lungs symptoms of poisoning begin within seconds to minutes. It is soluble in water and is often used as a 96% aqueous solution (NIOSH 2005). Hydrogen cyanide has a faint, bitter almond odor and a bitter, burning taste.
The vapor is flammable and potentially explosive. Hydrogen cyanide is very volatile, producing potentially lethal concentrations at room temperature. Exposure by any route may cause systemic effects.Īt temperatures below 78 ☏, hydrogen cyanide is a colorless or pale-blue liquid (hydrocyanic acid) at higher temperatures, it is a colorless gas. Substantial absorption can occur through intact skin if vapor concentration is high or with direct contact with solutions, especially at high ambient temperatures and relative humidity.
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