Methyl tert-butyl ether

1. Nature: colorless low viscosity of the liquid. Melting point -109 ℃, the boiling point 55.3 ℃, freezing point -108.6 ℃, the relative density of 0.7407 (20 / 4 ℃), refractive index of 1.3694. Flash point (closed cup) -28 ℃, burning 460 ℃, explosion limits (in air) 1.65% -8.4% (volume), the vapour pressure (25 ℃) 32.664 kPa, critical pressure 3.43 MPa, the critical temperature 223.95 ℃, viscosity (20 ℃) 0.36 mPa • s. With petrol and many miscible organic solvents, water-soluble, and some polar solvents such as water, methanol, ethanol azeotropic mixture can be formed. With similar Terpene the smell. 
2. Preparation methods: a mixed butene and methanol as raw materials, in the presence of acid catalyst, derived from exothermic reaction. A representative of the German Hess and Snamprogetti of Italy. U.S. chemical research, and permit companies to develop new chemical catalytic distillation of a new technology application was started in 1981. This method of the catalytic bed reactor and a distillation tower at the same equipment, the use of heat released in response to MTBE distillation purification, so that the process of reducing energy consumption. Raw material consumption of fixed: methanol 361 kg / t, isobutene (100%) 650 kg / t. 
3. Purity: ≥ 99.5%