Abbreviation: H
2,2,-dichlordiethyl sulfide
A blister chemical agent (vesicant) type of chemical weapon
Mustard vapor exposure greater medical concern than liquid form
Damage begins at 1-2 minutes post-exposure with irreversible damage within 20 minutes
Symptoms are visible by 4-8 hours
Sulfur mustard toxicity
Blister chemical agents 
Chloroform toxicity
Lewisite 
Hydrazine toxicity
Sulfur mustard 
Methane toxicity
Phosgene oxime 