What are the Uses of Butylene Glycol and Propylene Glycol

 

Butylene glycol and propylene glycol are common organic compounds. Their main uses are as follows:

Butanediol is mainly used in the manufacture of solvents, plastics, coatings, pigments, resins, fibers, etc. It can also be used to make softeners, refrigerant fluids, heat exchange fluids, etc.
Propylene glycol is mainly used in the manufacture of coatings, resins, paints, fibers, etc. It can also be used in the manufacture of medicines, spices and food additives.
Both butylene glycol and propylene glycol can be used as smoke thickeners in tobacco to make the smoke richer.
Butylene glycol and propylene glycol can also be used in the synthesis of dyes and pigments to increase their stability, softness and solubility.
Butylene glycol and propylene glycol can be used as one of the raw materials for synthetic resin. The synthetic resin has good flexibility, plasticity and durability.

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1.4-Butanediol

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1.4-Butanediol (chemical formula: HOCH2CH2CH2CH2OH) is one of the isomers of butanediol, a terminal dihydroxy substituent of butane, which is a colorless, viscous liquid at room temperature. Industrially, BDO is produced by allowing acetylene to react with two molecules of formaldehyde to form BDO, which is then hydrogenated. BDO can also be obtained by gas-phase hydrogenation of anhydrides.
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Tetrahydrofuran

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Tetrahydrofuran (THF) is a colorless, volatile liquid with the odor of ether or acetone and is miscible with water and most organic solvents. THF is highly flammable and may thermally decompose into carbon monoxide and carbon dioxide.
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BDO

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1.4-Butanediol ( BDO ) is used industrially as a solvent and in the manufacture of certain types of plastics, elastic fibers and polyurethanes. In organic chemistry, 1.4-butanediol is used in the synthesis of gamma-butyrolactone (GBL). In the presence of phosphoric acid and high temperatures, 1.4-Butanediol dehydrates into the important solvent tetrahydrofuran. At about 200°C, in the presence of a soluble ruthenium catalyst, the diol undergoes a dehydrogenation reaction to form butyrolactone. BDO is used to synthesize 1,4-butanediol diglycidyl ether, which is then used as an epoxy resin diluent.
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