Polyethylene Glycol Monostearate

Chemical Formula:

C₂₀H₄₀O₃(C₂H₄O)n (variable, depending on PEG chain length)

CAS Number:

0106-11-06

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Polyethylene Glycol Monostearate

Chemical Formula:

C₂₀H₄₀O₃(C₂H₄O)n (variable, depending on PEG chain length)

CAS Number:

0106-11-06

Polyethylene glycol monostearate is a nonionic surfactant derived from stearic acid and polyethylene glycol. It is widely used as an emulsifier, dispersing agent, and solubilizer in various formulations. Known for its ability to stabilize oil-in-water emulsions and improve texture. It provides smoothness and conditioning properties in personal care products. Common applications include cosmetics, pharmaceuticals, and food processing.

Characteristics

Molar Weight

Variable (depends on PEG chain length)

Melting Point

~50–55°C

Boiling Point

Decomposes before boiling

Solubility

Soluble in water, soluble in alcohols

Density

~1.03 g/cm³

Forms

White to off-white waxy solid or flakes

Odor

Mild fatty odor

USES AND APPLICATIONS

Key applications

Acts as emulsifier in creams and lotions
Improves solubility of hydrophobic substances
Used as dispersant in pharmaceutical formulations
Provides conditioning properties in hair products
Stabilizes emulsions in food industry

Industries

Cosmetics and personal care
Pharmaceuticals
Food processing
Industrial formulations

Synonyms

PEG monostearate, PEG-100 stearate, Polyoxyethylene monostearate, Stearic acid ethoxylate

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