Basic chemical series - 1,4 butanediol


Release time:

2023-12-15

organic compound

1,4-butanediol (Butane-1,4-diol), is an organic substance with a molecular formula of C4H10O2 and a molecular weight of 90.12. The appearance is colorless or light yellow oily liquid. Flammable, freezing point 20.1°C, refractive index 1.4461. Soluble in methanol, ethanol, acetone, slightly soluble in ether. It is hygroscopic, has a bitter smell, and has a slightly sweet taste in the mouth.

 

use:

1,4 butanediol is an important organic chemical and fine chemical raw material, and is the basic raw material for the production of polybutylene terephthalate (PBT) engineering plastics and PBT fibers; PBT plastics are the five most promising engineering plastics.

 

1,4 butanediol is the main raw material for the production of tetrahydrofuran, tetrahydrofuran is an important organic solvent, and the polytetramethylene glycol ether (PTMEG) obtained after polymerization is the basic raw material for the production of highly elastic spandex (Lycra fiber). Spandex is mainly used in the production of high-end sportswear, swimwear and other high-elastic knitwear.

 

The downstream product of 1,4 butylene glycol γ-butyrolactone is the raw material for the production of 2-pyrrolidone and N-methylpyrrolidone products, which derives a series of high value-added products such as vinylpyrrolidone and polyvinylpyrrolidone, which are widely used in pesticides, pharmaceuticals and cosmetics.

 

Preparation method:

Ethylene oxidation is one of the main production methods of butylene glycol. The method uses ethylene and air to react under the action of a catalyst to produce ethylene oxide, and then reacts ethylene oxide with water to form ethylene glycol, and then dehydrates to form butylene glycol.

 

Packaging, storage and transportation:

It is packaged in aluminum, stainless steel, galvanized iron drums or plastic drums, or stored and transported in tankers according to the provisions of flammable and toxic substances. Due to the high melting point of 20°C, the tanker should be equipped with a heating tube.

 

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