Liquid is clear amber colored.
Gas is greenish yellow with a sharp penetrating odor.
If cylinders are involved in a fire, safely relocate or keep cool with water spray. Use self-contained breathing apparatus, protective clothing and eye protection. The irritation extends to the chest causing a cough reflex which may be violent and painful and may include the discharge of blood or vomiting with eventual collapse. Other symptoms may include headache, general discomfort and anxiety. Contact with the liquid or vapor causes painful burns and ulcerations.