2-butanol, also known as methylethanol, has the chemical formula CH3CH2CHOHCH3. The molecular weight is 74.12. This product is a colorless liquid with a strong mint aroma, flammable, volatile, and optically active. The molecule has a chiral carbon atom, which can exist in three forms: right-handed body, left-handed body, Racemic mixture and dl body, with a relative density of 0.8063. Melting point -114.7 ℃. The boiling point is 99.5 ℃, 45.5 ℃ (7.999 × 103Pa). The flash point is 34 ℃. The refractive index is 1.3978. D body: relative density is 0.8080. The boiling point is 99.5 ℃. Flash point 24 ℃. The refractive index is 1.3954. The ratio rotation is+13.9 °. L body: relative density 0.8070. The boiling point is 99.5 ℃. The flash point is 28 ℃. The refractive index is 1.3955. Specific rotation -13.51 ° (25 ℃). The oxidation of 2-butanol can generate methyl ethyl ketone and acetic acid. Slightly soluble in water (12.5ml/100ml at 25 ℃), soluble in acetone and benzene, and miscible with ethanol and ether. The product interacts with water to form an azeotropic mixture, with a content of 68% and a total boiling point of 88.5 ℃. Rat oral LD506480mg/kg. 2-butanol is the main raw material for the production of methyl ethyl ketone, butyl acetate and Sec-Butyl acetate. It is also used as solvent and extractant, plasticizer, processing agent, herbicide, synthetic perfume, essence, colorant, wetting agent, cleaning agent and solvent for many natural resins, flaxseed oil and Castor oil.

Slightly viscous colorless flammable liquid with a strong odor. The melting point is -114.7 ℃, the boiling point is 99.5 ℃, the relative density (d204) is 0.808~0.809, the refractive index (nD25) is 1.3949, and the flash point is 23.9 ℃. Soluble in water, mixed with ethanol and ether.

1. Used as an extraction solvent and spice.
2. 2-butanol used as solvent and chromatographic reagent
3. 2 butanol is used as an intermediate in the production of methyl ethyl ketone, in the preparation of butyl acetate and secondary butyl, as plasticizers, processing aids, herbicides, solvents, etc.
4. Used as an intermediate in the production of methyl ethyl ketone, for the preparation of butyl acetate and secondary butyl.