Description

Tween 85 is a non-ionic surfactant belonging to the polysorbate family, specifically polyoxyethylene (20) sorbitan trioleate. This versatile emulsifier and solubilizer is valued for its ability to stabilize oil-in-water emulsions and enhance the solubility of lipophilic compounds in aqueous systems. It is essential for formulators in the pharmaceutical, cosmetic, and food industries seeking reliable, high-purity ingredients for complex delivery systems.

Application

• Pharmaceutical formulations as an emulsifier and solubilizing agent for active pharmaceutical ingredients (APIs).
• Cosmetic and personal care products, including creams, lotions, and ointments, for emulsion stabilization.
• Food industry applications as an emulsifier in baked goods, dairy products, and edible oils.
• Industrial applications as a dispersant, wetting agent, and anti-static agent in various chemical processes.
• Agricultural formulations for enhancing the dispersion and absorption of pesticides and herbicides.
• Biotechnology and cell culture as a component of media and reagent formulations.

Basic Information

Product Name	Tween 85
CAS No.	9055-70-3
Molecular Formula	C100H188O28
Molecular Weight	~1839.6 g/mol
Synonyms	Polysorbate 85; Polyoxyethylene (20) sorbitan trioleate; POE (20) sorbitan trioleate; Sorbitan, tri-9-octadecenoate, poly(oxy-1,2-ethanediyl) derivs.; (Z,Z,Z)-; Tween® 85; E 435 (when used as a food additive); Span 85 ethoxylate
EINECS	232-958-1

Quality Control

Our Tween 85 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets the required specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as saponification value, hydroxyl value, and fatty acid composition are available upon request. We can supply grades suitable for various applications, including those requiring compliance with in-house or pharmacopeial standards.

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 easily oxidized; for long-term storage, consider an inert atmosphere (e.g., nitrogen blanket) to maintain optimal quality. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to amber viscous liquid
Identification (IR)	Conforms
Assay (by Oleic Acid)	≥ 85.0 %
Saponification Value	83 - 93 mg KOH/g
Hydroxyl Value	39 - 52 mg KOH/g
Water Content (KF)	≤ 3.0 %
pH (5% Solution)	5.0 - 7.0

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