DA   (Diphenylchloroarsine)
Formula : (C6H5)2AsCl
Description :  Aerosol 
                       State: Liquid or solid.
                       Odor : Odorless but irritating.
                       Color :  
                       Type : Vomiting agent.
                       Persistency: Short.
                       Density: 1.34
                       Decomposition point: about 300° C
Symptoms : Appear within 2 or 3 minutes after 1 minute of exposure.
                          Irritation of the eyes and mucous membranes, runny nose, 
                         sneezing and coughing, severe headache, pain and tightness
                         in the chest, nausea and vomiting.
                         Last  30 minutes to several hours. 
Protection : Mask and respirator in open areas. 
                         Additional protective clothes if present in confined areas.
First aid : Aeration, fresh air and oxygen.