Product name: Polystyrene Glycol

Specification：PEG200, PEG300, PEG400, PEG600

CAS No.: 25322-68-3

Melting point: 64-66 ° C

Boiling point:>250 ° C

Density: 1.27 g/mL at 25 ° C

Purpose and synthesis method:

Polyethylene glycol is abbreviated as "PEG". A polymer compound formed by dehydration and condensation of ethylene glycol between molecules. The chemical formula HOCH2 (CH2OCH2) nCH2OH. Where n is greater than 4. The average molecular weight is 200 to 7000. The number after the commodity polyethylene glycol represents the average molecular weight. For example, polyethylene glycol - 400 indicates that the average molecular weight of the commodity polyethylene glycol is about 400.

Polyethylene glycol and polyethylene glycol fatty acid esters are widely used in the cosmetics and pharmaceutical industries. Polyethylene glycol has many excellent properties: water solubility, non volatility, physiological inertia, gentleness, lubricity, and makes the skin moist, soft, and pleasant after use. Polyethylene glycol with different relative molecular weight fractions can be selected to change the viscosity, moisture absorption, and tissue structure of the product. Polyethylene glycol (Mr<2000) with low relative molecular weight is suitable for use as a wetting agent and consistency regulator, for cream, lotion, toothpaste, shaving cream, etc., and also for hair care products that are not cleaned, giving hair a silky luster. Polyethylene glycol (Mr>2000) with high relative molecular weight is suitable for lipstick, deodorant stick, soap, shaving soap, foundation make-up and beauty cosmetics. In cleaning agents, polyethylene glycol is also used as a suspending agent and thickener. In the pharmaceutical industry, Chemicalbook is used as a matrix for ointments, emulsions, ointments, lotions, and suppositories. Polyethylene glycols (such as Polyethylene Glycol NF, Dow Chemical Co.) that are commercially available for food and drug use are more suitable for cosmetic use. The application of methoxy polyethylene glycol and polypropylene glycol is similar to that of polyethylene glycol. Polyethylene glycol is widely used in various pharmaceutical preparations, such as injections, topical preparations, ophthalmic preparations, oral and rectal preparations. Solid grade polyethylene glycol can be added to liquid polyethylene glycol to adjust viscosity, and used for topical ointment; The polyethylene glycol mixture can be used as a suppository matrix; The aqueous solution of polyethylene glycol can be used as a suspension aid or to adjust the viscosity of other suspension media; Polyethylene glycol and other emulsifiers are used together to increase emulsion stability. In addition, polyethylene glycol is also used as a film coating agent, tablet lubricant, and controlled release material.