2,5(1,5-,2,4 or 1,4)-dimethyl-3,6,9,12-tetraoxatridecan-1-ol 2,5,8,11-Tetraoxatridecan-13-ol, 9,12(9,13-,10,12 or 10,13)-dimethyl- 66271-91-8 EINECS 266-295-5 Propylene oxide, methyl carbitol adduct