Chinese name: butanol; Chinese Synonyms: second butanol; methyl ethyl methanol; another butanol; 2-butanol section; second alcohol; 2-butanol, anhydrous, 99.9%; 2-butanol , 99%; English name: sec-Butanol; [1] Synonyms: (R, S) -Butan-2-ol; (RS) -2-butanol; 1-Methyl propanol; 1-methylpropanol; 1-Methylpropyl alcohol ; 1-methylpropylalcohol; 2-butanol, DL-; Alcool butylique secondaire CAS Number: 78-92-2; molecular weight: 74.12; No. EINECS: 201-158-5; Molecular formula: C4H10O; CH3CH (OH) CH2CH3. Appearance: colorless, transparent liquid, similar to the smell of wine density: the relative density (water = 1) 0.81; the relative density (Air = 1) 2.55 Stability: stable risk Marker: 7 (flammable liquids) main purposes: raw materials for the manufacture of methyl ethyl ketone, synthetic fragrance, dyes, etc., also used as a solvent 1. Preparation of oil or gas in the cleavage of butene in * adsorption using steam hydrolysis. 2. shrunk by acetaldehyde and crotonaldehyde dehydrated, by catalytic hydrogenation. Or in corn starch as raw materials, fermentation, separation. 3. obtained by refining industrial butanol. Use 1 for the production of methyl ethyl ketone intermediates for the preparation of butyl acetate, sec-butyl. As anti-emulsifiers, dye dispersant, a dehydrating agent, paint remover, industrial detergents. Also serves as the manufacture of plasticizers, processing agents, herbicides, oil extraction, wetting agents, perfumes and the like. Because butanol coatings to increase workability and ductility, it can be used nitro spray paint, lacquer thinners cosolvent. 2. butanol is mainly used for the preparation of bananas, butter, cheese and other food flavors and whiskey. In the candy 34mg / kg; baked foods 32mg / kg; soft drinks 12mg / kg; cold in 7.0mg / kg; cream in 4.0mg / kg; alcohol 1.0mg / kg. 3. used as a solvent and chromatographic analysis of standard material. 4. For the manufacture of methyl ethyl ketone, as a raw material synthetic fragrance, dyes, etc., are also used as a solvent.