Description

Poly(Oxy-1,2-Ethanediyl), .Alpha.,.Alpha.'-1,4-Butanediylbis[.Omega.-Hydroxy-, Octadecanoate is a high-purity, non-ionic surfactant and emulsifier derived from polyethylene glycol (PEG) and stearic acid. This compound is valued for its excellent stability and ability to form consistent, fine emulsions in complex formulations. It is essential for manufacturers in the pharmaceutical, personal care, and specialty chemical industries seeking reliable performance in solubilization, lubrication, and dispersion applications.

Application

This versatile PEG-based ester finds use across multiple high-value industrial sectors:

• Pharmaceutical Formulations: Acts as a solubilizer, emulsifier, and bioavailability enhancer in topical creams, ointments, and oral suspensions.
• Cosmetics & Personal Care: Serves as a primary emulsifier and thickener in lotions, creams, sunscreens, and hair conditioners, providing a smooth texture and stable emulsion systems.
• Industrial Lubricants & Release Agents: Used as a non-ionic component in synthetic lubricants, mold release agents, and textile fiber finishes.
• Food-Grade Additives (where specified): Employed as an emulsifier and stabilizer in certain food processing applications, subject to compliance with appropriate purity grades (e.g., FCC).
• Agrochemical Adjuvants: Functions as a surfactant and dispersant in pesticide and herbicide formulations to improve wetting and spreading on foliage.
• Polymer & Plastic Additives: Used as an internal lubricant and anti-static agent in plastic processing and polymer production.

Basic Information

Product Name	Poly(Oxy-1,2-Ethanediyl), .Alpha.,.Alpha.'-1,4-Butanediylbis[.Omega.-Hydroxy-, Octadecanoate
CAS No.	57534-46-0
Molecular Formula	CnH2n+2Ox (Polymer) / Contact for details
Molecular Weight	Variable (Polymer) / Contact for details
Synonyms	PEG Distearate; Polyethylene Glycol Distearate; Polyoxyethylene Distearate; POE Distearate; Ethoxylated Stearic Acid Ester; Bis(.alpha.-Hydroxypoly(oxy-1,2-ethanediyl)) Butanedioate Octadecanoate; Stearic Acid, Diester with Polyethylene Glycol; PEG 4000 Distearate (typical grade)
EINECS	Contact for details

Quality Control

Our Poly(Oxy-1,2-Ethanediyl), .Alpha.,.Alpha.'-1,4-Butanediylbis[.Omega.-Hydroxy-, Octadecanoate is manufactured under a strict quality management system. We offer grades suitable for industrial, cosmetic, and pharmaceutical applications, with quality assurance protocols aligned to relevant standards such as ISO, GMP, and USP/NF where applicable. Certificates of Analysis (COA) documenting purity, identity, and key physical parameters are available for every batch upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Protect from excessive humidity and store away from incompatible materials. Keep container tightly sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white waxy solid or flakes
Identification (IR)	Conforms
Assay (PEG Ester Content)	Min. 98.0%
Acid Value	≤ 2.0 mg KOH/g
Saponification Value	Contact for details
Hydroxyl Value	Contact for details
Melting Point / Range	Contact for details
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.