Product Description
Tween 20 (Code: 06314), chemically known as Polyoxyethylene (20) Sorbitan Monolaurate, is a nonionic surfactant and emulsifying agent widely used in biochemical, pharmaceutical, and industrial applications. It appears as a pale yellow to amber, viscous liquid that is soluble in water, ethanol, and most organic solvents.
Tween 20 is valued for its mild surface activity, low toxicity, and high solubilizing capacity, making it ideal for protein stabilization, membrane washing, cell lysis, and reagent formulation. It is also commonly used in ELISA assays, immunoassays, and buffer preparations (e.g., TBST).

Key Features
- Product Code: 06314
- Chemical Name: Polyoxyethylene (20) Sorbitan Monolaurate
- Synonyms: Polysorbate 20, Sorbitan Monolaurate Ethoxylate
- Molecular Formula: C₅₈H₁₁₄O₂₆
- Molecular Weight: ~1227 g/mol
- CAS Number: 9005-64-5
- Appearance: Pale yellow to amber viscous liquid
- Purity: Laboratory Grade (≥99%)
- Hydrophilic-Lipophilic Balance (HLB): ~16.7
- Solubility: Soluble in water, ethanol, and methanol
- pH (1% solution): 5.0–7.0
- Density: ~1.1 g/cm³ at 25°C
Applications
Laboratory & Research
- Biochemistry & Molecular Biology: Used as a detergent in protein extraction, membrane solubilization, and enzyme assays.
- Immunoassays (ELISA/Western Blot): Serves as a blocking and washing agent to reduce nonspecific binding.
- Buffer Preparation: Common component in PBS-T or TBS-T solutions.
- Cell Biology: Applied in cell membrane studies, lipid interactions, and lysis buffer formulations.
- Analytical Chemistry: Improves solubility and dispersion of hydrophobic compounds.
Industrial & Commercial Uses
- Pharmaceuticals: Used as an emulsifier and stabilizer in creams, ointments, and injectables.
- Cosmetics & Personal Care: Acts as a mild surfactant in lotions, shampoos, and emulsions.
- Food Industry: Serves as a food-grade emulsifier (E432) for flavor and texture stabilization.
- Biotechnology: Assists in formulation of enzyme and antibody solutions.
Safety & Handling
- Hazard: Generally regarded as safe; may cause mild skin or eye irritation upon prolonged exposure.
- Precautions: Avoid contact with eyes and skin. Use gloves and safety glasses.
- Storage: Store in a cool, dry, and well-ventilated area. Keep container tightly closed and protected from heat or direct sunlight.
- Disposal: Dispose of in accordance with local environmental and laboratory waste regulations.
Price in Bangladesh
Available in 100 mL, 250 mL, 500 mL, and 1 L laboratory bottles.
Bulk and institutional orders eligible for special pricing.
Why Choose Tween 20 (Polyoxyethylene (20) Sorbitan Monolaurate) 06314 from M/S Bright Scientific Co.?
- High-purity laboratory-grade surfactant for biochemical and industrial use.
- Compatible with a wide range of buffers and biological reagents.
- Reliable emulsifying and solubilizing performance.
- Available in both research and bulk packaging.
- Trusted supplier for academic, pharmaceutical, and industrial laboratories across Bangladesh.
Contact Information
M/S Bright Scientific Co.
📞 Phone: 01711285976








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