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Thermo Scientific™ Polysorbate 85 (Tween™ 85)
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Specifications:
| Application | molecular biology | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Liquid |
| Product Brand | Thermo Fisher Scientific™, thermo Scientific | ||
| Product Grade | Molecular Biology | ||
Polyoxyethylene Sorbitan Trioleate – Nonionic Surfactant for Emulsification and Formulation Applications
Polysorbate 85, also known as Tween™ 85, is a high-performance nonionic surfactant widely used in pharmaceutical formulation, biotechnology, cosmetics, food research, and industrial emulsification processes. Chemically described as polyoxyethylene sorbitan trioleate, Polysorbate 85 is particularly valued for its strong emulsifying capacity and ability to solubilize hydrophobic compounds in aqueous systems.
Supplied as a yellow to amber viscous liquid, this reagent offers reliable quality, controlled impurity limits, and consistent surfactant functionality for demanding laboratory and production workflows.
Key Features and Benefits
Effective Nonionic Emulsifier
Polysorbate 85 is highly suitable for stabilizing oil-in-water emulsions, improving dispersion of lipophilic substances, and enhancing formulation stability.
Controlled Quality and Purity
Manufactured to meet defined analytical specifications, including infrared identity confirmation and low acid value for consistent batch performance.
Broad Compatibility Across Applications
Tween 85 is widely applied in:
- Biopharmaceutical and vaccine formulation
- Diagnostic reagent preparation
- Cosmetic and personal care emulsions
- Food and industrial emulsification research
- Solubilization of hydrophobic actives
Ambient Storage Convenience
Stable at room temperature, enabling easy storage and handling in routine laboratory environments.
Synonyms
- Sorbitan trioleate, ethoxylated
- Polyoxyethylenesorbitan trioleate
- Tween™ 85
Chemical and Physical Properties
| Parameter | Description |
|---|---|
| Product Name | Polysorbate 85 |
| Synonym | Tween™ 85 |
| CAS Number | 9005-70-3 |
| MDL Number | MFCD01779641 |
| Appearance | Yellow to amber viscous liquid |
| Density | 1.02 g/cm³ |
| Flash Point | >200 °C |
| Storage Temperature | Ambient |
Quality Specifications
| Test | Specification |
|---|---|
| Appearance | Yellow to amber viscous liquid |
| Infrared Spectrum | Conforms |
| Water Content | ≤3% |
| Acid Value | ≤2 mg KOH/g |
| Hydroxyl Value | 38 – 52 mg KOH/g |
| Saponification Value | 80 – 95 mg KOH/g |
Applications
Polysorbate 85 is commonly used in:
- Emulsification of oils and lipid-based compounds
- Stabilization of formulations containing hydrophobic ingredients
- Surfactant additive in pharmaceutical excipients
- Cosmetic creams, lotions, and personal care formulations
- Biotechnology and diagnostic reagent preparation
- Industrial research requiring strong emulsifying agents
Ordering Information
| Product Code | Pack Size | Packaging |
|---|---|---|
| 334152500 | 250 mL | Glass bottle |
| 334150010 | 1 L | Glass bottle |
| 334150025 | 2.5 L | Glass bottle |
Polysorbate 85 (Tween™ 85) is a reliable, high-quality nonionic surfactant designed for applications requiring strong emulsification and solubilization of lipophilic substances. With controlled purity specifications, ambient storage stability, and flexible packaging options, it is an essential reagent for pharmaceutical formulation, biotechnology workflows, cosmetic development, and industrial emulsification research.
- Pack Size: Glass bottle, 1L Glass bottle, 2.5L Glass bottle, 250 mL