1,1,3,3-Tetramethyl-1,3-divinyldisilazane 1,3-Divinyltetramethyldisilazane 7691-02-3 CCRIS 2450 EINECS 231-701-1 N-(Dimethylvinylsilyl)-1,1-dimethyl-1-vinylsilylamine Silanamine, 1-ethenyl-N-(ethenyldimethylsilyl)-1,1-dimethyl-