1,3,2-Dioxaphosphorinane, 2-chloro-5,5-dimethyl-, 2-oxide 2-Chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane 2-oxide 4090-55-5 EINECS 223-831-2 Phosphorochloridic acid, cyclic (2,2-dimethyltrimethylene) ester