What are the properties and uses of 1,4-butanediol?

1,4-butanediol is a primary alcohol. It is a colorless, viscous liquid and is one of the four stable isomers of butanediol. 1,4-butanediol is commonly used as a solvent and humectant and in the manufacture of plasticizers, pharmaceuticals, polyester resins, polymer resins, etc. What follows is a description of the properties and uses of 1,4-butanediol.

Here is the content list:

l Properties of 1,4-butanediol

l Uses of 1,4-butanediol

Properties of 1,4-butanediol

Physical and chemical properties

1,4-butanediol is an organic substance with the chemical formula C4H10O2 and a mass of 90.12. 1,4-butanediol may be a colorless or yellow-brown oily liquid with a melting point of 20.1°C and a refractive index of 1.4461. 1,4-butanediol is soluble in methanol, ethanol, and solvents and slightly soluble in ether. 1,4-butanediol is absorbent and has in the mouth a bitter odor and a slightly sweet taste in the mouth.

Legitimacy

Although 1,4-butanediol is currently not part of the US national program, some states have classified 1,4-butanediol as a drug. Because of its basic similarity to gamma-hydroxybutyrate, 1,4-butanediol has been prosecuted under the Federal Analogues Act. in 2002, a federal case ruled that 1,4-butanediol could not be considered an analog of gamma-hydroxybutyrate under federal law, however, this choice was later overturned by the Second Circuit. However, a jury in a super executive branch court in Chicago found that 1,4-butanediol was not an analog of gamma-hydroxybutyric acid under federal law, a choice that was upheld by the Seventh Circuit Court of Appeals. In the UK, 1,4-butanediol (along with another γ-hydroxybutyrate precursor, γ-butyrolactone) was classified as a Class C drug in 2009. It is not explicitly illegal in European countries, but may also be considered illegal if used as a drug.

Uses of 1,4-butanediol

1,4-butanediol may be a basic chemical and a fine chemical material, widely used in the assembly of PBT engineering plastics and fibers, artificial tetrahydrofuran (THF), polytetramethylene ether glycol (PTMEG, obtained by chemical change of THF), polyether advanced elastomers, and cloth fibers (synthesized from PTMEG and diisocyanates, etc.), unsaturated polyester resins, polyester polyols, butylene glycol ether solvents, also in the pharmaceutical and cosmetic industries.

1,4-butanediol is an important organic chemical and fine chemical material and is the basic material for the assembly of butylene terephthalate (PBT) engineering plastics and PBT fibers. PBT plastics are one of the five most promising engineering plastics.

1,4-butanediol is the main material for the assembly of tetrahydrofuran, an important organic solvent. The chemical change gives polytetramethylene glycol ether (PTMEG), the basic material for assembling extremely elastic cloth (Lycra fibers).

Y-butyrolactone, a downstream product of 1,4-butanediol, is the material for the assembly of 2-pyrrolidone and N-methyl pyrrolidone. This has led to a range of high value-added products such as vinylpyrrolidone and polyvinylpyrrolidone, which are widely used in pesticides, prescription drugs, and cosmetics.

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