Arsine, a blood agent, and a few blister agents
contain an arsenic atom.
GB is a blister agent
sometimes called Sarin, one raindrop of which is lethal to humans.
The Purifier successfully destroyed the nerve agent Soman (GD) as well as the blister agent
Kurdish officials in northern Iraq and rebels in northern and eastern Syria have both cited multiple attacks this summer during which noxious chemicals were dispersed, including chlorine and another substance which caused burning and respiratory distress, and that they suspected of being mustard or another blister agent
Chlorine is not included in this nerve agent category, as it is a blister agent
The "most critical" chemicals, including around 20 tons of the blister agent
sulphur mustard, must be shipped out by 31 December.
In private briefings to weapons experts, White House officials said analysts had concluded that Syria possesses more than 1,000 metric tons of chemical weapons, of which about 300 metric tons are sulfur mustard, the blister agent
used in World War I.
Also, over 16,000 Iranians were killed by the toxic blister agent
mustard gas between August 1983 and February 1986.
President Bashar Assad's regime has stockpiled chemical and biological weapons since the 1970s, including sarin nerve gas, Tabon gas, VX gas and mustard blister agent
Assad's father Hafez stockpiled chemical and biological weapons after seizing power in 1970, including sarin nerve gas, Tabon gas, VX gas and mustard blister agent
The safety record at the Hermiston depot included some serious incidents - a 500-pound bomb accidentally exploded in March 1944, killing six people; 30 construction workers were overcome by an unknown substance in September 1999, but survived; a worker was exposed to a small amount of mustard blister agent
Libyan ministers who have deserted the dictator in recent days revealed that he has 14 tons of the lethal blister agent
mustard gas stored in bunkers around the capital.