Is Polysorbate 80 (E433) Vegan?

Also known as: Polyoxyethylene (20) sorbitan monooleate, Tween 80, PEG-20 sorbitan monooleate, Polysorbatum 80

Depends on Source

Polysorbate 80 depends on the fatty acid used to build it. The sorbitol backbone is plant-derived and the ethoxylation is petrochemical, but the oleic acid can come from vegetable oil or animal fat. Only the manufacturer can say which.

Last checked 29 Jul 2026 How we decide

Ingredient Data

Vegan Status

Depends on Source

E-Number

E433

Also Known As

Polyoxyethylene (20) sorbitan monooleate; Tween 80; PEG-20 sorbitan monooleate; Polysorbatum 80

Source

Built in three steps. Sorbitol from plant starch is dehydrated to sorbitan, the sorbitan is esterified with oleic acid, and the product is reacted with around twenty units of ethylene oxide to make it water-soluble. The sorbitol and the ethylene oxide are plant-derived and petrochemical, and the oleic acid can come from vegetable oil or from animal fat.

Commonly Found In

Ice cream and frozen desserts, sauces and dressings, vitamin and mineral drinks, chewing gum base, bakery products, pharmaceutical solutions and injectables, and cosmetics.

Vegan Alternative

Sunflower or soy lecithin often does similar emulsifying work, and manufacturers can confirm plant-derived polysorbate on request.

Additional Notes

Two of the three building blocks raise no question. What is open is the oleic acid: vegetable oils high in oleic acid, such as olive, sunflower, and high-oleic canola, are the common commercial source, and rendered animal fat is a source of oleic acid across the wider oleochemical industry. EU specifications do not restrict the origin of the fatty acid, and no label distinguishes them.

In depth

The Fatty Acid Is the Open Question

Polysorbate 80 has three parts, and only one of them is uncertain. The sorbitan core comes from sorbitol, made by hydrogenating glucose from corn or wheat starch. The polyoxyethylene chains come from ethylene oxide, a petrochemical. Neither has an animal route.

The third part is oleic acid, an eighteen-carbon unsaturated fatty acid. Olive oil is around 70 percent oleic, high-oleic sunflower and canola higher still, and palm oil contributes a large share of the world's commercial supply. Beef tallow also contains oleic acid in quantity, and the oleochemical industry splits animal fats as well as vegetable oils into their component acids.

EU specifications for E433 set purity and composition limits without naming a source for the fatty acid. A supplier can meet the specification with either feedstock, so the additive alone cannot be graded vegan or not.

Getting an Answer

Certification is the fastest route. A recognized vegan mark means the certifier has traced ingredients like this one through the supply chain.

Asking works too. Most food-grade polysorbate on the market is made from vegetable oil, largely because plant feedstocks are cheaper and easier to certify for kosher, halal, and vegan markets simultaneously. Manufacturers are used to the question and often answer within a few days.

Pharmaceutical use is harder. Polysorbate 80 stabilizes many injectable medicines and vaccines under the name Tween 80, and the excipient's fatty acid source is rarely disclosed in a patient information leaflet. Most major vegan organizations advise taking prescribed medicine regardless, on the basis that health need outranks ingredient uncertainty and that no vegan alternative product exists.

What It Does in Food

Ice cream is the largest food use. Polysorbate 80 displaces milk proteins from the surface of fat droplets, which lets the fat partially coalesce during whipping and freezing. The result is a stiffer, drier ice cream that holds its shape on a cone and melts slowly. Soft-serve depends on it heavily.

Dressings and sauces use it to keep oil dispersed, and vitamin drinks use it to dissolve fat-soluble vitamins into water.

The emulsifier has drawn research attention over possible effects on the gut microbiome and intestinal barrier, mostly from animal and cell studies. Those findings speak to overall processed food intake and remain unsettled in humans, and they sit apart from the sourcing question this page answers.

Frequently asked questions

Is polysorbate 80 vegan?

It depends on the oleic acid used to make it. The sorbitol backbone is plant-derived and the rest is petrochemical, but the fatty acid can come from vegetable oil or from animal fat. Most food-grade material is plant-derived, and the label does not confirm it.

Is E433 in ice cream?

Frequently. Polysorbate 80 gives ice cream a stiff, slow-melting texture by letting fat droplets partially join together during freezing. Soft-serve and scooping ice creams use it widely, including some dairy-free ranges.

Is the polysorbate 80 in vaccines vegan?

The source is usually not disclosed. Polysorbate 80 stabilizes several injectable medicines and vaccines, and manufacturers rarely publish the fatty acid origin. Major vegan organizations advise taking prescribed medicine, since no alternative formulation exists.

What is the difference between polysorbate 80 and polysorbate 60?

The fatty acid. Polysorbate 80 uses oleic acid and polysorbate 60 (E435) uses stearic acid, which makes 60 more solid and better suited to icings and whipped toppings. Both carry the same open question about the fat source.

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