Describe in detail the use of n-butanol

N-butanol is an organic compound with the chemical formula CH3 (CH2) 3OH. It is a colorless and transparent liquid and emits a strong flame when burning. It has a smell similar to fusel oil. Its steam is irritating and can cause cough. Boiling point 117-118 ℃, relative density 0.810. 63% n-butanol and 37% water form an azeotrope. It is miscible with ethanol, ether and many other organic solvents. It is obtained by fermentation of sugars or catalytic hydrogenation of n-butyraldehyde or butenal. Used as a solvent for fat, wax, resin, shellac, varnish, etc., or in the manufacture of paint, man-made fiber, detergent, etc.

1. it is mainly used to manufacture n-butyl ester plasticizers of phthalic acid, aliphatic dibasic acid and phosphoric acid, which are widely used in various plastic and rubber products. It is also the raw material for preparing butyraldehyde, butyric acid, butylamine and butyl lactate in organic synthesis. It is also a dehydrating agent, an anti emulsifier, an extractant for oils, drugs (such as antibiotics, hormones and vitamins) and spices, and an additive for alkyd resin coatings. It can also be used as solvent and dewaxing agent for organic dyes and printing inks. As a solvent, it can be used to separate potassium perchlorate and sodium perchlorate, as well as sodium chloride and lithium chloride. It is used to wash the precipitation of sodium uranyl zinc acetate. The molybdate method is used to determine arsenic acid in colorimetric determination. Determination of fat in milk. Saponification ester medium. Paraffin embedded materials were prepared during microanalysis. Used as solvent for fat, wax, resin, shellac, gum, etc. Co solvent of nitro paint, etc.

2. reference materials for chromatographic analysis. It is used for colorimetric determination of arsenic acid and solvent for separating potassium, sodium, lithium and chlorate.

3. as an important solvent, it is widely used in the production of urea formaldehyde resin, cellulose resin, alkyd resin and coating, and can also be used as an inactive diluent commonly used in adhesives. It is also an important chemical raw material for the production of plasticizer dibutyl phthalate, aliphatic dibasic acid esters and phosphate esters. It is also used as dehydrating agent, anti emulsifier, extractant of oils, fragrances, antibiotics, hormones, vitamins, etc., additive of alkyd resin coating, cosolvent of nitro paint, etc.

4. cosmetic solvents. It is mainly used as a cosolvent in cosmetics such as nail polish to cooperate with the main solvent such as ethyl acetate, which helps to dissolve the pigment and adjust the volatilization speed and viscosity of the solvent. The addition amount is generally about 10%.

5. it can be used as defoamer for ink blending in silk screen printing.

6. used for baking food, pudding and candy.

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