Propylene Glycol Monooleate (PGMO)

Overview

Propylene Glycol Monooleate (PGMO) is a versatile ester derived from propylene glycol and oleic acid. As a monoester, it possesses a unique molecular structure that confers excellent emulsifying, stabilizing, and lubricating properties. It is widely recognized in various industrial sectors for its amphiphilic nature, making it an indispensable ingredient in formulations requiring effective oil-in-water or water-in-oil emulsification.

At CanCastor, our Propylene Glycol Monooleate (PGMO) is synthesized via the controlled esterification of high-purity propylene glycol (1,2-propanediol, CAS: 57-55-6) with oleic acid (cis-9-octadecenoic acid, CAS: 112-80-1), ensuring a consistent composition primarily of the monoester. This precision manufacturing process results in a product with a low di-ester content and optimized monoester purity, crucial for its functional efficacy and regulatory compliance. Our PGMO is recognized by its INCI name: Propylene Glycol Oleate and often identified by CAS Number: 27194-88-3, distinguishing it as a reliable chemical entity across global markets.

This non-ionic surfactant is engineered to perform, offering superior interfacial tension reduction, excellent thermal stability, and broad pH compatibility. Its ability to effectively blend immiscible phases underscores its value as a solubilizer and dispersant, vital for enhancing product stability and performance in demanding applications from pharmaceuticals to food processing and personal care. Discover our full range of specialty esters in our full catalog.

Key Physical & Chemical Properties

• Appearance: Clear to pale yellow oily liquid
• Acid Value: Max. 3.0 mg KOH/g
• Hydroxyl Value: 160 – 190 mg KOH/g
• Saponification Value: 165 – 185 mg KOH/g
• Iodine Value: 75 – 90 g I2/100g
• Specific Gravity (25°C/25°C): 0.900 – 0.950
• Moisture: Max. 0.5 %
• Refractive Index (20°C): 1.458 – 1.465