Description

Cremophor CAS NO 39279-69-1 is a non-ionic surfactant and solubilizer derived from castor oil and ethylene oxide, widely recognized for its exceptional ability to solubilize hydrophobic substances in aqueous media. Its primary value lies in enhancing the bioavailability and stability of poorly soluble active ingredients, making it a critical excipient in pharmaceutical formulations. This product is essential for manufacturers in the pharmaceutical, cosmetic, and agrochemical industries who require reliable and safe solubilization agents for injectable, oral, and topical products.

Application

• Pharmaceutical solubilizer for injectable formulations (e.g., parenteral nutrition, intravenous drugs).
• Critical excipient in oral and topical drug delivery systems to improve bioavailability.
• Emulsifier and stabilizer in cosmetic creams, lotions, and sunscreens.
• Solubilizing agent for vitamins, essential oils, and fragrances.
• Wetting and dispersing agent in agrochemical formulations.
• Component in cell culture media and diagnostic reagents.
• Used in the production of specialty polymers and coatings.

Basic Information

Product Name	Cremophor
CAS No.	39279-69-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyoxyl 35 Castor Oil; Macrogolglycerol Hydroxystearate; Polyoxyethylene Glycol Triricinoleate; PEG-35 Castor Oil; Kolliphor EL; Ethoxylated Castor Oil; Polyoxyl 40 Hydrogenated Castor Oil (related); Nonionic Surfactant EL
EINECS	254-862-5

Quality Control

Our Cremophor is manufactured under strict quality management systems. It can be supplied to meet various pharmacopoeial standards, including USP-NF and EP monographs for Polyoxyl 35 Castor Oil. Each batch undergoes rigorous analytical testing for identity, purity, and performance. Certificates of Analysis (COA) documenting critical parameters such as hydroxyl value, saponification value, and ethylene oxide content are available upon request to ensure compliance with your specific application requirements.

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 easily oxidized and should be stored under an inert atmosphere when in opened containers to maintain stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Pale yellow to yellow viscous liquid
Identification (IR)	Conforms
Hydroxyl Value	65 - 85 mg KOH/g
Saponification Value	60 - 75 mg KOH/g
Acid Value	≤ 2.0 mg KOH/g
Water Content (KF)	≤ 2.0 %
Ethylene Oxide Content	Contact for details
Heavy Metals	≤ 20 ppm

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