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 dehydr$ation and condensation of ethylene glycol between molecules. The ch&emical formula HOCH2 (CH2OCH2) nCH2OH. Where n is greater th₩an 4. The average molecular weight is 200 to 7000. The number after the commodity polyethylen♦e glycol represents the average molecular weight. For example, polyethylene glβycol - 400 indicates that the average molecular weig÷ht of the commodity polyethylene glycol is about 400.

Polyethylene glycol and polyethylene glycol fatty acidλ esters are widely used in the cosmetics and pharmaceutical industries. Polyethyleεne glycol has many excellent properties: water solubility, non vo×latility, physiological inertia, gentleness, lubriπcity, and makes the skin moist, soft, and pleasant after use. Polyethyle<ne glycol with different relative molecular weight fractions can be selected" to change the viscosity, moisture absorption, and tissue str↔ucture 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 f↑or lipstick, deodorant stick, soap, shaving soap, foundation make-up and bea<uty cosmetics. In cleaning agents, polyethylene glycol is also used as a suspending agent anδd thickener. In the pharmaceutical industry, Chemicalbook is used as a matri♣x for ointments, emulsions, ointments, lotions, and suppositories. Polyethylene glycols (suc§h as Polyethylene Glycol NF, Dow Chemical Co.) that are commercially ava&ilable 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, topic£al preparations, ophthalmic preparations, oral and rectal preparatio÷ns. Solid grade polyethylene glycol can be added to liquid polyethylene glycol to adjust v iscosity, and used for topical ointment; The polyethylene glycol mixture can be us£ed as a suppository matrix; The aqueous solution of polyethylene glycol can be used as§ a suspension aid or to adjust the viscosity of other suspensioσn media; Polyethylene glycol and other emulsifiers are used together to increase emulsion stabili♥ty. In addition, polyethylene glycol is also used as a film coating agent, tablet lubr"icant, and controlled release material.