Description

Poly(Ethylene Glycol-Co-Propylene Glycol) Monobutyl Ether is a non-ionic, amphiphilic block copolymer surfactant synthesized from ethylene oxide and propylene oxide, capped with a butyl group. This unique structure provides excellent wetting, dispersing, and coupling properties, making it a versatile intermediate and performance additive. It is essential for formulators and manufacturers in industries such as coatings, agrochemicals, and personal care who require reliable surfactants to enhance product stability and efficacy. Its balanced hydrophilic-lipophilic character allows it to function effectively across a wide range of formulations.

Application

• Coatings & Inks: Acts as a pigment dispersant, wetting agent, and flow control additive in water-based and solvent-based systems.
• Agrochemical Formulations: Used as an emulsifier, solubilizer, and penetration enhancer in herbicides, pesticides, and adjuvants.
• Personal Care & Cosmetics: Functions as a surfactant, emollient, and carrier in creams, lotions, and hair care products.
• Industrial Cleaners: Serves as a key component in detergent formulations for its degreasing and surface-wetting capabilities.
• Polymerization: Employed as a reactive intermediate or macromonomer in the synthesis of polyurethanes and other specialty polymers.
• Textile Processing: Used as a lubricant, antistatic agent, and dyeing auxiliary in fiber treatment.

Basic Information

Product Name	Poly(Ethylene Glycol-Co-Propylene Glycol) Monobutyl Ether
CAS No.	68551-14-4
Molecular Formula	(C2H4O)m(C3H6O)nC4H9O (Variable m, n)
Molecular Weight	Variable (Depends on EO/PO ratio)
Synonyms	Butoxypoly(ethylene glycol-co-propylene glycol); Poly(oxy-1,2-ethanediyl), α-butyl-ω-hydroxy-, block polymer with poly(oxy-1,2-ethanediyl); PEG/PPG Monobutyl Ether; EO/PO Block Copolymer Monobutyl Ether; Butyl Terminated PEG-PPG Copolymer; Polyoxyethylene polyoxypropylene monobutyl ether; Surfonic® (series trade name); Emulsogen (series trade name)
EINECS	Contact for details

Quality Control

Our Poly(Ethylene Glycol-Co-Propylene Glycol) Monobutyl Ether is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistency in critical parameters such as hydroxyl value, ethylene oxide/propylene oxide ratio, molecular weight distribution, and residual moisture. A comprehensive Certificate of Analysis (COA) documenting purity and performance specifications is available for each shipment to support your quality assurance protocols.

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 product is hygroscopic (moisture-sensitive). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Hydroxyl Value (mg KOH/g)	Contact for details
Water Content	< 0.5% (w/w)
pH (5% solution)	5.0 - 7.0
Viscosity @ 25°C	Contact for details

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