Description

Polyethylene-Polypropylene Glycol CAS NO 9003-11-6 is a versatile block copolymer surfactant, also known as a poloxamer, synthesized from ethylene oxide and propylene oxide. This amphiphilic structure provides exceptional surface activity, making it a critical component for controlling interfacial properties in complex formulations. It is essential for manufacturers in the pharmaceutical, personal care, and industrial sectors seeking reliable wetting, emulsifying, and stabilizing agents. Its ability to function across a wide range of temperatures and formulations underscores its value in demanding applications.

Application

• Pharmaceutical Excipient: Widely used as a solubilizer, emulsifier, and stabilizer in oral, topical, and parenteral drug formulations, including creams, ointments, and solid dispersions.
• Personal Care & Cosmetics: Serves as a key surfactant and emulsifying agent in shampoos, body washes, lotions, and creams for its mildness and foam-boosting properties.
• Industrial Applications: Acts as a demulsifier in petroleum processing, a dispersant in agrochemicals, and a lubricant and anti-static agent in various manufacturing processes.
• Biomedical Research: Utilized in cell culture as a membrane fusion agent and in biotechnology for protein purification and stabilization.
• Food Processing: Employed as an emulsifier and defoaming agent in specific food-grade applications where regulatory compliance is met.
• Textile & Leather Processing: Functions as a leveling agent, dye dispersant, and softener in finishing formulations.

Basic Information

Product Name	Polyethylene-Polypropylene Glycol
CAS No.	9003-11-6
Molecular Formula	(C2H4O)a.(C3H6O)b
Molecular Weight	Variable (based on EO/PO ratio and block length)
Synonyms	Poloxamer; Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol); PEG-PPG-PEG; EO/PO Block Copolymer; Oxirane, methyl-, polymer with oxirane; Polyoxyethylene polyoxypropylene block copolymer; Pluronic® (Trade Name Series); Synperonic® (Trade Name Series)
EINECS	Contact for details

Quality Control

Our Polyethylene-Polypropylene Glycol is produced under a strict quality management system. Each batch is tested against rigorous specifications to ensure consistency in performance-critical parameters such as average molecular weight, ethylene oxide content, and hydroxyl value. Certificates of Analysis (COA) documenting these results are provided with every shipment. We can supply grades compliant with relevant pharmacopeial monographs (e.g., USP, EP) for pharmaceutical applications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous liquid
Identification (IR)	Conforms
Average Molecular Weight	As per grade (e.g., 1100, 2000, 4000, etc.)
Ethylene Oxide Content	40% - 80% (Grade dependent)
Hydroxyl Value	As per grade specification
Water Content	≤ 1.0% (w/w)
pH (5% Solution)	5.0 - 7.5
Residue on Ignition	≤ 0.1%

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