PRODUCT OVERVIEW

N-butanol, also known as 1-butanol, is an organic compound with chemical formula C4H10O. It is a colorless transparent liquid, slightly soluble in water, soluble in ethanol, ether and other organic solvents. It is mainly used to prepare esters, plastic plasticizers, pharmaceuticals, paint, and also can be used as solvent.

ATTRIBUTES

Density: 0.81g/cm3
Melting point: - 89 ℃
Boiling point: 117.6 ℃
Flash point: 29 ℃
Refractive index: 1.399 (20 ℃)
Saturated vapor pressure: 0.73kPa (20 ℃)
Critical temperature: 289.85 ℃
Critical pressure: 4.414MPa
Upper explosion limit (V/V): 11.3%
Lower explosive limit (V/V): 1.4%
Appearance: colorless transparent liquid
Solubility: slightly soluble in water, soluble in most organic solvents such as ethanol and ether

CHEMICAL PROPERTY

N-butanol is flammable, its vapor and air can form an explosive mixture, which can cause combustion and explosion in case of open fire and high heat. React violently with oxidant. In the fire scene, the heated container may explode.
Hydrogenation can be carried out with nickel or copper as catalyst in the gas phase or with nickel as catalyst in the liquid phase. If hydrogenation is carried out at high temperature and high pressure, butanol can also be obtained from decomposition of some by-products, and the purity of the product can be improved.

APPLICATION AREA

1. It is mainly used to produce n-butyl ester plasticizers of phthalic acid, aliphatic dicarboxylic acid and phosphoric acid. They are widely used in various plastic and rubber products, and also raw materials for the production of butyraldehyde, butyric acid, butylamine and butyl lactate in organic synthesis.
2. As an extractant for oils, drugs (such as antibiotics, hormones and vitamins) and spices, an additive for alkyd resin coatings, a solvent for organic dyes and printing inks, and a dewaxing agent.
3. It is used to produce melamine resin, acrylic acid, epoxy varnish, and to prepare edible essence such as bananas, cream, whisky and cheese.

PRODUCTION METHOD

The industrial production of n-butanol mainly includes fermentation, propylene carbonylation and acetaldehyde aldehyde condensation. In addition, n-butanol is also produced by the production of higher fatty alcohol from ethylene. The carbonylation reaction of propylene, carbon monoxide and hydrogen with cobalt or rhodium catalyst (see complex catalyst) generates n-butyraldehyde and isobutyraldehyde, and the hydrogenation yields n-butanol and isobutanol.
CH3CH=CH2+CO+H2─→? CH3CH2CH2CHO+? (CH3)2CHCHO
CH3CH2CH2CHO+H2─→CH3CH2CH2CH2OH
（CH3)2CHCHO+H2─→（CH3)2CHCH2OH
When using cobalt catalyst, the reaction is carried out at 10~20MPa and about 130~160 ° C, and the ratio of n-butyraldehyde to isobutyraldehyde is about 3. The rhodium complex catalyst, which has been used in industry since 1976, enables the reaction to be carried out at 0.7~3MPa and 80~120 ° C, and the ratio of n-butyraldehyde to isobutyraldehyde reaches 8~16.
Hydrogenation can be carried out with nickel or copper as catalyst in the gas phase or with nickel as catalyst in the liquid phase. If hydrogenation is carried out at high temperature and high pressure, butanol can also be obtained from decomposition of some by-products, and the purity of the product can be improved. Crotonaldehyde can be prepared by condensation and dehydration of two molecules of acetaldehyde:
Crotonaldehyde was hydrogenated to n-butanol at 180 ° C and 0.2MPa in the presence of Ni-Cr catalyst.
CH3CH=CHCHO+2H2─→CH3CH2CH2CH2OH
Among the above three methods, propylene carbonyl synthesis has become the most important production method of n-butanol due to the advantages of easy availability of raw materials, relatively lower pressure of carbonylation process, higher ratio of n-butanol to isobutanol, and simultaneous or specialized production of 2-ethylhexanol

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Product Name：1-butanol

Molecular format:C4H10O

CAS No.:71-36-3

Product molecular structure：

Chemical Properties:

Application: