Polysorbates

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Polysorbates are a class of nonionic surfactants derived from sorbitol and fatty acids, commonly used as emulsifiers, solubilizers, and dispersing agents in a wide range of industries. They improve the mixing of oil and water phases, stabilize emulsions, and enhance the texture and consistency of formulations. Polysorbates are widely used in pharmaceuticals, cosmetics, food products, and industrial applications due to their biocompatibility, low toxicity, and effectiveness at low concentrations.

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Categories: Emulsifiers, Surfactants(cosmetic) Tags: Emulsifier for Food & Cosmetics, Emulsifying Agents, Non-Ionic Surfactants, Pharmaceutical industry, Polysorbates

Description

Table of Contents

Polysorbates

Primary Uses

Pharmaceutical Industry
- Used as emulsifiers and solubilizing agents in oral, topical, and injectable drug formulations.
- Helps to stabilize suspensions and emulsions.
- Improves bioavailability of poorly soluble drugs.
Food Industry
- Acts as emulsifiers in baked goods, ice creams, salad dressings, and beverages.
- Enhances texture, shelf life, and consistency of food products.
- Used in fat-based spreads and confectionery to improve mixing and prevent separation.
Cosmetics and Personal Care
- Emulsifies oils and water in creams, lotions, shampoos, and conditioners.
- Enhances product texture, stability, and skin feel.
- Helps disperse fragrances and active ingredients evenly.
Industrial Applications
- Used in textile processing, detergents, and paints as emulsifiers and dispersants.
- Facilitates the formulation of emulsions and suspensions in various manufacturing processes.

Secondary Uses

Agriculture
- Used as adjuvants in pesticide formulations to improve spreading and adhesion.
Biomedical Research
- Employed as stabilizers in vaccine formulations and cell culture media.
Lubricants and Coatings
- Improves miscibility and stability in lubricant and coating formulations.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Polyoxyethylene sorbitan esters (varies by fatty acid chain)
Common/Trade Name: Polysorbate 20, Polysorbate 40, Polysorbate 60, Polysorbate 80 (most common types)
CAS Number: Varies (e.g., Polysorbate 80: 9005-65-6)
HS Code: 3402.19.00 (Surface-active agents)
Synonyms: Tween (common trade name), Polyoxyethylene sorbitan fatty acid esters

2. Physical & Chemical Properties

Physical State: Viscous liquid or semi-solid
Color: Pale yellow to amber
Odor: Mild, characteristic odor
pH: Typically 6.0–8.0 in aqueous solution
Solubility: Soluble in water and alcohol; forms stable emulsions
HLB (Hydrophilic-Lipophilic Balance): Range from 8.6 to 16.7 depending on type (higher HLB = more hydrophilic)
Density: Approx. 1.05 g/cm³

3. Safety & Hazard Attributes

GHS Classification: Generally not classified as hazardous
Toxicity: Low toxicity; considered safe for food and cosmetic use within regulatory limits
Irritation Potential: Mild skin and eye irritant at high concentrations
Flammability: Non-flammable

4. Storage & Handling Attributes

Storage Conditions: Store in a cool, dry place away from direct sunlight and heat
Container Type: Supplied in plastic drums, bottles, or bulk containers
Shelf Life: Typically 2–3 years if stored properly
Handling Precautions: Avoid inhalation of aerosols and prolonged skin contact

5. Regulatory & Compliance Attributes

Complies with:
- FDA regulations for food-grade emulsifiers
- Cosmetic ingredient safety standards (e.g., EU Cosmetic Regulation)
- USP/NF monographs for pharmaceutical grades
- REACH and other international chemical safety regulations

6. Environmental & Health Impact

Biodegradability: Readily biodegradable
Ecotoxicity: Low environmental impact when used as directed
Bioaccumulation: Not expected to bioaccumulate
Carcinogenicity/Mutagenicity: Not classified as hazardous

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Gloves and safety goggles recommended during handling of concentrated material
Handling Guidelines: Use in well-ventilated areas; avoid inhalation of mist or aerosols
Storage Measures: Keep containers tightly closed; avoid contamination

First Aid Measures

Inhalation: Move to fresh air if irritation occurs
Skin Contact: Wash with soap and water; seek medical advice if irritation persists
Eye Contact: Rinse thoroughly with water for at least 15 minutes; seek medical attention if irritation continues
Ingestion: Rinse mouth; seek medical advice if discomfort or symptoms develop

Firefighting Measures

Fire Hazards: Not flammable but can burn under fire conditions
Extinguishing Media: Water spray, foam, dry chemical, or CO₂
Special Precautions: Use standard protective equipment
Hazardous Combustion Products: May produce carbon oxides and other toxic fumes during combustion