Buy factory Propylene Glycol/ CAS NO. 57-55-6/ wholesale supply.

Buy Propylene Glycol CAS-57-55-6. Buy factory Propylene Glycol/ CAS NO. 57-55-6/ wholesale supply. Propylene glycol (IUPAC name: propane-1,2-diol) is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste. Its chemical formula is CH₃CH(OH)CH₂OH. Containing two alcohol groups, it is classed as a diol. It is miscible with a broad range of solvents, including water, acetone, and chloroform. In general, glycols are non-irritating and have very low volatility. Buy factory Propylene Glycol/ CAS NO. 57-55-6/ wholesale supply, buy from our china factory. 

Propylene Glycol suppliers

It is produced on a large scale primarily for the production of polymers. In the European Union, it has E-number E1520 for food applications. For cosmetics and pharmacology, the number is E490. Propylene glycol is also present in propylene glycol alginate, which is known as E405. Buy factory Propylene Glycol/ CAS NO. 57-55-6/ wholesale supply

Propylene Glycol for sale

Propylene glycol is a compound which is GRAS (generally recognized as safe) by the US Food and Drug Administration under 21 CFR x184.1666, and is also approved by the FDA for certain uses as an indirect food additive. Buy factory Propylene Glycol/ CAS NO. 57-55-6/ wholesale supply

Propylene Glycol wholesale price

Propylene glycol is approved and used as a vehicle for topical, oral, and some intravenous pharmaceutical preparations in the U.S. and in Europe. he compound is sometimes called (alpha) α-propylene glycol to distinguish it from the isomer propane-1,3-diol, known as (beta) β-propylene glycol. Propylene glycol is chiral. Commercial processes typically use the racemate. The S-isomer is produced by biotechnological routes. Buy factory Propylene Glycol/ CAS NO. 57-55-6/ wholesale supply

Buy Propylene Glycol CAS-57-55-6

Structure of Propylene Glycol CAS-57-55-6

The compound is sometimes called (alpha) α-propylene glycol to distinguish it from the isomer propane-1,3-diol, known as (beta) β-propylene glycol. Propylene glycol is chiral. Commercial processes typically use the racemate. The S-isomer is produced by biotechnological routes. Buy Propylene Glycol CAS-57-55-6

Production of Propylene Glycol CAS-57-55-6

Industrially, propylene glycol is mainly produced from propylene oxide (for food-grade use). According to a 2018 source, 2.16 M tonnes are produced annually. Manufacturers use either non-catalytic high-temperature process at 200 °C (392 °F) to 220 °C (428 °F), or a catalytic method, which proceeds at 150 °C (302 °F) to 180 °C (356 °F) in the presence of ion exchange resin or a small amount of sulfuric acid or alkali. Buy Propylene Glycol CAS-57-55-6

1,2-Propandiol Synthesis of Propylene Glycol CAS-57-55-6

Final products contain 20% propylene glycol, 1.5% of dipropylene glycol, and small amounts of other polypropylene glycols. Further purification produces finished industrial grade or USP/JP/EP/BP grade propylene glycol that is typically 99.5% or greater. Use of USP (US Pharmacopoeia) propylene glycol can reduce the risk of Abbreviated New Drug Application (ANDA) rejection.

Propylene glycol can also be obtained from glycerol, a byproduct from the production of biodiesel.[5] This starting material is usually reserved for industrial use because of the noticeable odor and taste that accompanies the final product. Buy Propylene Glycol CAS-57-55-6

Laboratory Propylene Glycol CAS-57-55-6

S-Propanediol is synthesized via fermentation methods. Lactic acid and lactaldehyde are common intermediates. Dihydroxyacetone phosphate, one of the two products of breakdown (glycolysis) of fructose 1,6-bisphosphate, is a precursor to methylglyoxal. This conversion is the basis of a potential biotechnological route to the commodity chemical 1,2-propanediol. Three-carbon deoxysugars are also precursor to the 1,2-diol.

A small-scale, nonbiological route from D-mannitol is illustrated in the following scheme: Buy Propylene Glycol CAS-57-55-6

Propylene Glycol for sale