1,2-DIMETHYLHYDRAZINE DIHYDROCHLORIDE 1,2-Dimethylhydrazine hydrochloride 1,2-Dimethylhydrazinium dichloride 306-37-6 CCRIS 260 Dimethylhydrazinium dichloride EINECS 206-183-5 Hydrazine, 1,2-dimethyl-, dihydrochloride N,N'-Dimethylhydrazine dihydrochloride NSC 60518 sym-Dimethylhydrazine dihydrochloride