Polyethylene Glycol 300

Main Application Areas

Pharmaceutical Field (Core Application):

Pharmaceutical Solvent/Co-solvent: Due to its low viscosity and extremely strong solubility, it is an ideal solvent for injections (especially intravenous or intramuscular injections), oral liquids, and syrups. It can significantly improve the solubility of fat-soluble drugs (such as steroid hormones, antineoplastic drugs, and vitamins), reduce drug precipitation, and enhance the stability of preparations. For example, injections of some poorly soluble antibiotics and analgesics often use PEG 300 as a solvent (blending with PEG 400 can adjust viscosity).

Preparation Base: Used as a low-viscosity base or diluent in ointments and creams to regulate the fluidity and spreadability of preparations (often compounded with high molecular weight PEG like PEG 4000 to balance hardness and permeability).

Transdermal Absorption Enhancer: With a small molecular weight, it can assist drugs in penetrating the skin's stratum corneum, improving the bioavailability of topical administration (such as gels and patches).

Daily Chemicals and Cosmetics:

Used as a humectant, solvent, or conditioner added to skincare products (such as serums, toners, lotions), perfumes, and makeup:

It can dissolve fragrances and active ingredients (such as plant extracts, antioxidants), preventing ingredient separation or precipitation;

Due to its small molecular weight, it offers mild penetration, quickly replenishes skin moisture, and has low irritation (suitable for products for sensitive skin or infants).

Industrial Field:

Used as a low-viscosity leveling agent in coatings and inks to improve the film-forming uniformity of products;

Used as a softening agent in the textile industry to enhance the smooth hand feel of fabrics;

Used as a lubricant in metal processing to reduce mechanical friction (due to good fluidity, it adheres evenly).