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Tween 80 (Polysorbate 80) is a common synthetic emulsifier and surfactant. Its molecular structure allows it to mix oil and water, preventing separation. You'll find it in food (like ice cream), medicines, vaccines, and cosmetics to improve texture, stability, and solubility. Regulatory bodies globally deem it safe for consumption in small, regulated quantities.
Items | Specifications | Results |
Appearance | Light yellow to yellow oily liquid | Apposite |
Colour Lovibond （R/Y） | ≤1.5R 10Y | 0.6R 4.6Y |
Acid Value (mg KOH/g) | ≤2.0 | 1.1 |
Saponification Value (mg KOH/g) | 45~55 | 47.1 |
Hydroxyl Value (mg KOH/g) | 65~80 | 72.3 |
Residue on Ignition (w/%) | ≤0.25 | 0.11 |
Moisture(w/%) | ≤3.0 | 2.3 |
Lead Pb (mg/kg) | ≤2 | ＜2 |
Arsenic (mg/kg) | ≤3 | ＜3 |
Oxyethylene（w/%） | 65.0-69.5 | 67.1 |
Conclusion | Products qualified,in line with the relevant requirements. | |
Tween 80 is a very common, synthetic non-ionic surfactant (a type of detergent) and emulsifier. Its primary job is to help mix oil and water together, which would otherwise separate. You'll find it in a huge range of products, from food and medicine to cosmetics and scientific laboratories.
Tween: This is a trademarked brand name from Croda International PLC. The scientific name for the class of chemicals is polysorbate.
80: The number refers to the specific type of fatty acid attached to the molecule. In this case, 80 signifies oleic acid, a common monounsaturated fat.
Therefore, Tween 80's chemical name is Polysorbate 80.
Tween 80 is a "non-ionic surfactant" because it doesn't carry an electrical charge in water.
Its molecule has two distinct parts:
Hydrophilic Head (Water-Loving): A large polyoxyethylene (PEG) chain that is attracted to water.
Lipophilic Tail (Oil-Loving): A tail derived from oleic acid that is attracted to fats and oils.
This structure allows it to act as a bridge between oil and water. The oil-loving tails bury themselves in oil droplets, while the water-loving heads face out into the water. This forms stable droplets that can remain suspended in the water, creating an emulsion.
Tween 80 is incredibly versatile and is used in numerous industries:
1. Food Industry (as an Emulsifier E433):
Ice Cream: Prevents ice crystals from forming, making it smoother and easier to scoop.
Whipped Cream & Toppings: Helps stabilize the foam and air bubbles.
Prepared Sauces & Dressings: Keeps them from separating into oil and water layers.
Chewing Gum: Helps keep flavors distributed and prevents softening agents from separating.
2. Pharmaceuticals & Vaccines:
Drug Solubilization: Helps poorly water-soluble drugs dissolve in liquid medications and IV injections.
Emulsion Stabilizer: Used in creams and lotions to keep them consistent.
Vaccine Adjuvant: In some vaccines (e.g., flu shots like Fluzone), it is used to break apart viruses into smaller fragments, helping the body generate a better immune response. It also helps stabilize the vaccine formula.
3. Cosmetics & Personal Care:
Found in shampoos, lotions, creams, and deodorants to blend ingredients and create a smooth, creamy texture.
4. Microbiology & Biotechnology:
Cell Culture: Used as a wetting agent to help nutrients spread evenly in the growth medium.
Membrane Permeability: Scientists use it to make bacterial membranes more permeable for experiments.
For the vast majority of people, yes, Tween 80 is considered safe when used in the small, regulated quantities found in consumer products.
Regulatory Status: It is approved as a safe food additive (E433) by major regulatory bodies worldwide, including the U.S. FDA, the European Food Safety Authority (EFSA), and WHO/JECFA.
Safety Assessments: These agencies have reviewed the scientific data and set an Acceptable Daily Intake (ADI) of up to 25 mg per kilogram of body weight per day. The amount consumed in a typical diet is far below this level.
Rare Sensitivities: While extremely rare, some individuals with specific sensitivities or conditions like Inflammatory Bowel Disease (IBD) have reported concerns. However, no strong causal link has been established in the general population through rigorous studies.
Function: It's an emulsifier and surfactant that mixes oil and water.
Alias: Its chemical name is Polysorbate 80.
Ubiquity: It's found in a massive range of everyday products you likely use.
Safety: It is rigorously tested and deemed safe for consumption and use by global health authorities at approved levels.
Used as an emulsifier, wetting agent, penetrant, diffusion agent, etc..
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