Description

Polyoxyethylene 25 Propylene Glycol Stearate is a high-purity, non-ionic surfactant and emulsifier derived from propylene glycol, stearic acid, and ethylene oxide. This versatile compound is engineered to provide excellent emulsification, solubilization, and stabilization properties in complex formulations. It is a critical ingredient for manufacturers in the pharmaceutical, personal care, and food industries seeking reliable, high-performance excipients and processing aids.

Application

• Pharmaceutical Excipient: Used as a solubilizer, emulsifier, and bioavailability enhancer in oral and topical drug formulations, including creams, ointments, and liquid suspensions.
• Cosmetic & Personal Care: Serves as a primary emulsifier and stabilizer in creams, lotions, and hair care products, providing a smooth texture and consistent emulsion stability.
• Food Industry: Functions as an emulsifier and dispersing agent in food products, helping to blend oil and water phases in items like whipped toppings, dairy analogs, and bakery goods.
• Industrial Applications: Acts as a surfactant and wetting agent in various industrial processes, including textile processing, agrochemical formulations, and lubricant additives.

Basic Information

Product Name	Polyoxyethylene 25 Propylene Glycol Stearate
CAS No.	37231-60-0
Molecular Formula	CnH2n+1O(C2H4O)25(C3H6O)C18H35O2 (Polymeric)
Molecular Weight	Approx. 2000-2500 g/mol (Average)
Synonyms	PEG-25 Propylene Glycol Stearate; POE (25) Propylene Glycol Monostearate; Polyoxyl 25 Propylene Glycol Stearate; PPG Stearate with 25 EO; Ethoxylated Propylene Glycol Stearate (25 EO); Emulsifier PS-25; Kolliphor® PS 25; Nonionic Emulsifier S-25
EINECS	253-408-6

Quality Control

Our Polyoxyethylene 25 Propylene Glycol Stearate is manufactured under strict quality management systems. Each batch is tested to ensure it meets stringent specifications for identity, purity, and performance. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, hydroxyl value, acid value, and saponification value. Production can be aligned with cGMP guidelines for pharmaceutical applications, and relevant documentation is available to support regulatory filings.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white waxy solid
Identification (IR)	Conforms
Assay (by Titration)	≥ 98.0%
Hydroxyl Value	40 - 60 mg KOH/g
Acid Value	≤ 2.0 mg KOH/g
Saponification Value	60 - 80 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.