Description

Tween 60 is a non-ionic surfactant belonging to the polysorbate family, specifically polyoxyethylene (20) sorbitan monostearate. This versatile emulsifier and solubilizer is critical for creating stable, homogeneous mixtures of oil and water phases in complex formulations. It is an essential ingredient for manufacturers in the pharmaceutical, food, and personal care industries seeking reliable performance and regulatory compliance. Our high-quality Tween 60 CAS NO 66794-58-9 ensures consistent results for your demanding applications.

Application

• Pharmaceuticals: As a solubilizing agent for poorly water-soluble drugs in oral and topical formulations, and as an emulsifier in creams and ointments.
• Food Industry: Used as an emulsifier in baked goods, dairy products (like ice cream), and edible oils to improve texture and shelf stability.
• Cosmetics & Personal Care: A key component in creams, lotions, and makeup for its emulsifying and skin-conditioning properties.
• Industrial Applications: Acts as a dispersing agent, lubricant, and anti-static agent in textile processing and various chemical manufacturing processes.
• Biotechnology & Laboratory: Employed in cell culture media as a surfactant and in diagnostic reagent formulations.

Basic Information

Product Name	Tween 60
CAS No.	66794-58-9
Molecular Formula	C64H126O26
Molecular Weight	~1311.7 g/mol
Synonyms	Polysorbate 60; Polyoxyethylene (20) sorbitan monostearate; POE (20) sorbitan monostearate; Sorbitan, monooctadecanoate, poly(oxy-1,2-ethanediyl) derivs.; E435; Tween® 60; Ethoxylated sorbitan monostearate
EINECS	266-548-0

Quality Control

Our Tween 60 is manufactured and tested to meet stringent quality standards suitable for demanding applications. We offer grades compliant with major pharmacopoeial monographs, including USP-NF and EP, as well as FCC for food use. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and performance. Certificates of Analysis (COA) are available upon request 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 controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Description	Lemon to amber colored oily liquid or gel
Identification (IR)	Conforms
Assay (Oxyethylene Content)	65.0 - 69.5 %
Water Content (KF)	≤ 3.0 %
Residue on Ignition	≤ 0.25 %
Heavy Metals	≤ 10 ppm
Acid Value	≤ 2.0
Saponification Value	45 - 55
Hydroxyl Value	81 - 96

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