1,2,4-Benzenetriamine dihydrochloride 1,2,4-Benzenetriamine, dihydrochloride 1,2,4-Triaminobenzene dihydrochloride 615-47-4 615-71-4 AI3-52290 Benzene-1,2,4-triyltriamine dihydrochloride EINECS 210-428-1