Question: what are the characteristics of hydrogen cyanide?
Answer: APPEARANCE: Colorless or pale blue liquid below 78°F (25.6°C), colorless gas above 78°F (25.6°C). DESCRIPTION: Hydrogen cyanide (AC) is a systemic chemical asphyxiant. It interferes with the normal use of oxygen by nearly every organ of the body. Exposure to hydrogen cyanide (AC) can be rapidly fatal.