Glyceryl monooleate (CAS 111-03-5) is a common glyceryl monoester nonionic surfactant, chemically named 1-(cis-9-oleoyl)-rac-glycerol or DL-α-glyceryl monooleate, with the molecular formula C₂₁H₄₀O₄ and a molecular weight of 356.54 g/mol.

Basic Information

Chinese Name: Glyceryl Monooleate, Glyceryl Monooleate, Glyceryl Oleate

English Name: Glyceryl Monooleate, Monoolein

CAS Number: 111-03-5 (25496-72-4 is also used in other literature, possibly related to production process or isomers)

EINECS Number: 203-827-7

Molecular Formula: C₂₁H₄₀O₄

Appearance: Pale yellow liquid or waxy solid at room temperature

Melting Point: 35–38.5°C

Boiling Point: 483.3 ± 35.0°C

Density: Approx. 0.94–0.96 g/cm³ (25°C)

Flash Point: 155.4 ± 19.4°C

HLB Value: Approx. 3.5–4 (Lipophilic emulsifier)

Water solubility: Very low, approximately 5.3 × 10⁻³ g/L (25°C)

Solubility: Soluble in organic solvents such as ethanol, ethyl acetate, and mineral oil; insoluble in water.