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Dimethyl tert-butyl ether
Chemical substance
Dimethyl tert-butyl ether is a chemical substance with the molecular formula of C5H 12O.
Chinese name
Dimethyl tert-butyl ether
molecular weight
88. 15
court of arbitration for sports
1634-04-4
structural formula
C5H 12O
CASNo.: 1634-04-4
Molecular formula: C5H 12O.
Molecular weight: 88. 15
Boiling point: 55.3℃
Melting point:-109℃
Chinese name: methyl tert-butyl ether; Methyl tert-butyl ether; 2- methoxy-methylpropane; Tert-butyl methyl ether; 2- methyl -2- methoxypropane
English name: 2- methoxy -2- methylpropane; MTBE methyl tert-butyl ether; Tert-butyl methyl ether; Tert-butyl methyl ether
Description: Colorless low viscosity liquid. Melting point-109℃, boiling point 55.3℃, freezing point-108.6℃, relative density 0.7407(20/4℃) and refractive index 1.3694. Flash point (closed cup) -28℃, ignition point 460℃, explosion limit (in air) 1.65%-8.4% (by volume), vapor pressure (25℃)32.664kPa, critical pressure 3.43MPa, critical temperature 223.95℃, viscosity (20℃). It is miscible with gasoline and many organic solvents, slightly soluble in water, and can form a boiling mixture with some polar solvents such as water, methanol and ethanol. It has a terpene-like smell.
Production method: mixed butene and methanol are used as raw materials, and exothermic reaction is carried out in the presence of acidic catalyst. The representative processes are Hess in Germany and Snam Projiti in Italy. The new catalytic distillation process developed by American Chemical Research and Licensing Company and New Chemical Company has been applied in 198 1. In this method, a catalytic fixed bed reactor and a distillation column are combined in the same equipment, and the heat released by the reaction is used for the rectification and purification of methyl tert-butyl ether, thus reducing the process energy consumption.
Raw material consumption quota: methanol 36 1kg/t, isobutylene (100%) 650kg/t.
Usage: This product is mainly used as gasoline additive with excellent antiknock performance. Good miscibility with gasoline, less water absorption and no pollution to the environment. MTBE can improve the cold start characteristics and acceleration performance of gasoline, and has no adverse effect on gas resistance. Although the calorific value of methyl tert-butyl ether is low, the driving test shows that using gasoline COntaining 10%MTBE can reduce the fuel consumption by 7%, and obviously reduce the lead content and co content in the tail gas, especially the emission of carcinogenic polycyclic aromatic hydrocarbons. As a raw material for organic synthesis, high-purity isobutylene can be prepared. It can also be used to produce 2- methacrolein, methacrylic acid and isoprene. In addition, it can also be used as analytical solvent and extractant.
Fatty ether and its derivatives
detail
ether
Ether is an organic compound with the chemical formula C2H5OC2H5. It is a colorless and transparent liquid with a special pungent smell. That's great. Very unstable. Its steam is heavier than air. exist
dimethyl ether
Dimethyl ether (DME) is an organic compound, which is colorless and odorous flammable gas in standard state, and its chemical formula is C2H6O. When it is mixed with air, it can form an explosive mixture, and when it meets heat, it will meet fire.
MTBE
Methyl tert-butyl ether (MTBE) is an organic compound with the chemical formula C5H 12O. It is a colorless and transparent liquid, insoluble in water, soluble in ethanol and ether.
Methyl ethyl ether
Methyl ethyl ether is an organic compound with chemical formula C3H8O, which is colorless gas at normal temperature and pressure and has medicinal taste. It is soluble in water and miscible with ethanol and ether, and is mainly used as an anesthetic.
diisopropyl ether
Diisopropyl ether, also known as isopropyl ether, is an organic compound with the chemical formula C6H 14O. It is mainly used as standard substance, solvent and extractant for chromatographic analysis, and can also be used for organic synthesis.
butyl ether
Butyl ether, also known as dibutyl ether, is an organic compound with the chemical formula of C8H 18O. Colorless liquid, slightly soluble in water, soluble in acetone, dichloropropane and gasoline, miscible in ethanol.
ethylene glycol monobutyl ether
Ethylene glycol monobutyl ether is an organic compound with the chemical formula of C6H 14O2. It is a colorless and transparent liquid, soluble in water, acetone, benzene, ether, methanol, carbon tetrachloride and other organic solvents.
propylene glycol monomethyl ether
Both propylene glycol ether and ethylene glycol ether are ethylene glycol ether solvents, and the toxicity of propylene glycol ether to human body is lower than that of ethylene glycol ether products, so it belongs to low toxic ethers. Propylene glycol methyl ether has a faint ether smell, but it doesn't.
dimethoxyethane
Ethylene glycol dimethyl ether, also known as 1, 2- dimethoxyethane, is an organic compound with the molecular formula of C4H 10O2, which is a colorless and transparent liquid and soluble in water, ethanol and hydrocarbons.
diglycol
Diethylene glycol is a polyol with the chemical formula C4h1OO3. It is a colorless, odorless, transparent and hygroscopic viscous liquid, which contains
Propylene glycol n-butyl ether
Propylene glycol n-butyl ether is a chemical, and its molecular formula is C4H9OCH2CH(CH3)OH.
Octyl ether
Octyl ether, also known as n-octyl ether, CASNo. 629-82-3 is obtained by dehydration of octane. Used as lubricant and antistatic agent in plastic processing, as well as waterproof agent and intermediate.
ethylene glycol monobutyl ether
Ethylene glycol monobutyl ether is an organic compound with the chemical formula of C6H 14O2. It is a colorless and transparent liquid, soluble in water, acetone, benzene, ether, methanol, carbon tetrachloride and other organic solvents.
Diethylene glycol monobutyl ether
Diethylene glycol butyl ether is an organic compound with the molecular formula of C8H 18O3, HO (CH2) 2O (CH2) 2O (CH2) 3H3, which can be compared with water in any proportion.
2- propanediol
2- Propylene glycol is an organic compound with molecular formula C3H8O2 and molecular weight of 76.09. There are two configurations, R and S. These two configurations are generally harmless to water if
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