|
CAS : 67-56-1
formula : CH4O
molecular weight : 32.04
boiling point : 64.7 ° C
melting point : -98-98 ° C
Chinese name : methanol; wood accuracy; wood alcohol; wood alcohol
English title : Methyl alcohol; alcool methylique; wood alcohol
traits Description : transparent colorless flammable volatile liquid polarity. Pure ethanol smells slightly crude pungent smells bad. -97.8 ° C melting point. Boiling point of 64.7 ° C and 49.9 ° C (53.3kPa), 34.8 ° C (26.7kPa), 21.2 ° C (13.3kPa), 12.1 ° C (survived), 5 ° C (5 .33 kPa), -6.0 ° C (2.67 kPa), -16.2 ° C (1.33kPa.Conclusion), -25.3 ° C (0.67kPa), -44.0 ° C (0.05). Compared to the density of 0.7915 (20 / 4 ° C), steam relative density 1.11 (Air = 1), the refractive index of 1.3287, flash point (open cup), 16 ° C, 473 ° C spontaneous combustion point, surface tension (25 ° C) 45. 05mN / m, vapor pressure (20 ° C) 12.265kPa, viscosity (20 ° C) 0.5945mPa s. With water; Ethanol; Ether; Benzene; Ketones and many other immiscible organic solvent.
solubility than ethanol, and a variety of dissolved salts can be, for example, sodium sulfonate, calcium chloride and sodium sulfate Alkanolamine, copper sulfate, silver nitrate, chloride and sodium chloride. Steam and air to form explosive mixtures explosion limit of 6.0% -36.5% (volume).
production methods : industrial synthesis of methanol used almost exclusively by catalytic hydrogenation of carbon monoxide compression methods, processes, including gasification, synthesis purification, methanol synthesis and methanol crude distillation processes. Crude methanol process of purification and distillation including chemical treatment. Chemical treatment with alkali major damage to the distillation process it is difficult to separate impurities, and regulate the pH; Distillation is removing volatile components such as DME and hard alcohol level of volatile components, high-carbon alcohol and water. After crude distillation of the purity can be typically 98% or more.
purposes : one of the basic organic materials. Mainly used in the manufacture of formaldehyde, acetic acid, methyl chloride, trimethylamine and dimethyl sulfate and other organic products. Also pesticide (insecticide, miticide), medicine (sulfonamides, or neomycin), the precursor synthesis of dimethyl terephthalate, methyl methacrylate and methyl acrylate one of the raw materials. The solvent was important also for the incorporation of alternative fuels gasoline use.
20 since the 1980s, the methanol used in the production of gasoline octane additive MTBE, methanol, gasoline, methanol fuel, and protein products such as methanol, greatly promoting the development of the methanol production and market needs.
Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data". |
Home Products Search Properties Search 中文版