nfpa diamond 704 2-4-2 acid sign, , isolate on white background label. eps10

242 704 acetylene acid alkaline ammonia ammonium phosphate background battery blue carbon dioxide chloroform code deet diamond diesel emergency fire flammability fuel gas gasoline ghs hazard hazmat health hydrogen label material national osha potassium propane protection pyrophoric red safety sds sign sodium special specifications standard substance symbol table toxic white phosphorus yellow