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Hydrogen Cyanide
Valve Shutoff (HCN)
About Hydrogen Cyanide
Hydrogen Cyanide is a colorless gas or bluish-white liquid with a bitter almond
odor. It is also known as prussic acid. Hydrogen Cyanide is very toxic and, in air,
forms a severe fire hazard. Hydrogen cyanide is absorbed well by inhalation and
can produce death within minutes. 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.
The principle use of hydrogen cyanide is in the manufacture of organic chemicals,
e.g., acrylonitrile, methyl methacrylate, and adiponitrile, that are used in producing
synthetic fibers and plastics. It is also used in the chemical laboratory, and is
sometimes used in agriculture as a fumigant. Hydrogen cyanide is shipped in pressurized
gas cylinders, ton containers and tank cars.
Synonyms: hydrocyanic acid, prussic acid, formonitrile, formic anammonide, carbon
hydride nitride, cyclon
Accidental Release of Hydrogen Cyanide
In the event of an accidental release of hydrogen cyanide, remove all sources of
heat and ignition. Ventilate potentially explosive environments. If it can be done
safely, shut off the container valve using non sparking tools.
Powell Emergency Valve Closure Systems are designed to prevent significant releases
of hydrogen cyanide. In the case of an accidental release,
the hydrogen cyanide shutoff system immediately closes the valve, stopping
the flow of gas regardless of where the leak occurs downstream.
It is possible to prevent an accidental release of hydrogen cyanide.
Contact us today to discuss your specific application requirements.
Back to List of Hazardous Gases
Hydrogen Cyanide Shutdown Systems for Various Container Sizes
Powell is the only manufacturer to offer both pneumatic or electric systems for
150 lb Hydrogen Cyanide Cylinders, Ton Containers, Railcars, Tank Cars, and Bullet Tanks.
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