1-(1-Methyl-2-propoxyethoxy)propan-2-ol 2-Propanol, 1-(1-methyl-2-propoxyethoxy)- 2-Propanol, 1-(2-propoxy-1-methylethoxy)- 29911-27-1 BRN 2233580 Dipropylene glycol monopropyl ether EINECS 249-949-4 Propyl dipropasol solvent