Description

3-(2,3-Dihydroxypropoxy)-2-Hydroxypropyl Stearate is a high-purity, non-ionic surfactant and emulsifier derived from stearic acid and glycerol. This compound is valued for its excellent emulsifying properties, stability, and compatibility with a wide range of cosmetic and pharmaceutical formulations. It is an essential ingredient for manufacturers in the personal care, cosmetics, and pharmaceutical industries seeking to create stable, high-quality emulsions and creams.

Application

• Primary Emulsifier in cosmetic and pharmaceutical creams, lotions, and ointments.
• Stabilizing Agent for oil-in-water (O/W) emulsions, preventing phase separation.
• Skin Conditioning Agent in moisturizers and skincare products, providing a smooth, non-greasy feel.
• Excipient in topical drug delivery systems to enhance drug solubility and penetration.
• Co-emulsifier used in combination with other surfactants to optimize emulsion texture and viscosity.
• Industrial Applications as a lubricant additive or processing aid in specialty chemical formulations.

Basic Information

Product Name	3-(2,3-Dihydroxypropoxy)-2-Hydroxypropyl Stearate
CAS No.	66168-54-5
Molecular Formula	C24H48O6
Molecular Weight	432.64 g/mol
Synonyms	Stearic Acid, Diester with Diglycerol; Polyglyceryl-2 Stearate; Diglyceryl Stearate; Diglycerol Stearate; 2-Hydroxy-3-(2,3-dihydroxypropoxy)propyl octadecanoate; PGSE; Emulsifier PGSE
EINECS	266-197-1

Quality Control

Our 3-(2,3-Dihydroxypropoxy)-2-Hydroxypropyl Stearate is manufactured under a strict quality management system. Each batch is tested to ensure it meets high-purity standards suitable for cosmetic and pharmaceutical applications. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request to support your regulatory and quality assurance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white waxy solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Acid Value	≤ 2.0 mg KOH/g
Saponification Value	120 - 140 mg KOH/g
Hydroxyl Value	300 - 350 mg KOH/g
Water Content (KF)	≤ 1.0%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.