Polyoxyethylene (20) sorbitan monopalmitate
9005-66-7 · E 434 · Polyoxyethylene (20) sorbitan · Polyoxyethylene (20) sorbitan monopalmitate · Polyoxyethylene sorbitan monopalmitate (polysorbate 40) · Polysorbate 40 · E434 · 434 · Polyoxyethylene sorbitan monopalmitate · Polyoxyethylene sorbitan monopalmitate (polysorbate 40) · polysorbate 40 · Monopalmitat de polioxietilenă sorbitan (polisorbat 40) · MONOPALMITAT TAL-POLIOSSIETILEN SORBITAN (POLISORBAT 40) · Monopalmitat tal-poliossietilensorbitan (polisorbat 40) · MONOPALMITATE DE POLYOXYÉTHYLÈNE SORBITAN (POLYSORBATE 40) · Monopalmitate de polyoxyéthylène de sorbitane (polysorbate 40) · Monopalmitato de polioxietileno sorbitano (polissorbato 40) · Monopalmitato de sorbitano polioxietilenado (polisorbato 40) · MONOPALMITATO DE SORBITÁN POLIOXIETILENADO · MONOPALMITATO DI POLIOSSIETILENE SORBITANO (POLISORBATO 40) · Monopalmitato di poliossietilensorbitano (polisorbato 40) · Monopalmitynian polioksyetylenosorbitolu (polisorbat 40) · Polioksietilen sorbitan monopalmitat (polisorbat 40) · Polioksietileno sorbitano monopalmitatas (polisorbatas 40) · Polioksietilēna sorbitāna monopalmitāts (polisorbāts 40) · Polioxi-etilén-szorbitan-monopalmitát (poliszorbát 40) · POLIOXIETILÉN-SZORBITAN-MONOPALMITÁT (POLISZORBÁT 40) · Polyoksyetyleenisorbitaani-monopalmitaatti (polysorbaatti 40) · POLYOKSYETYLEENISORBITAANIMONOPALMITAATTI (POLYSORBAATTI 40) · Polyoxietylensorbitanmonopalmitat (Polysorbat 40) · Polyoxyethyleensorbitaanmonopalmitaat (polysorbaat 40) · Polyoxyethylen(20)sorbitanmonopalmitat (polysorbat 40) · POLYOXYETHYLEN-SORBITANMONOPALMITAT (POLYSORBAT 40) · Polyoxyethylene sorbitan monopalmitate (polysorbate 40) · Polyoxyethylensorbitanmonopalmitát (polysorbát 40) · Polyoxyetylénsorbitanmonopalmitát (polysorbát 40) · POLÜOKSÜETÜLEEN SORBITAANMONOPALMITAAT (POLÜSORBAAT 40) · Polüoksüetüleensorbitaanmonopalmitaat (polüsorbaat 40) · Μονοπαλμιτική πολυοξυ-αιθυλενο-σορβιτάνη (polysorbate 40) · Полиоксиетилен сорбитан монопалмитат (полисорбат 40)E number E434INS 434CAS 9005-66-7
Listed as an emulsifier by Codex.
Listed as emulsifiers (Codex)
- Codex Alimentarius: Emulsifier — CXS 192-1995 Table One, INS 434
Also known as polysorbate 40, this emulsifier is used in baked goods, icings and non-dairy creamers.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| Australia and New Zealand | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Canada | No listing matchedHealth Canada’s lists name additives without E or INS numbers, so this site matches them by exact name. A substance listed there under a name this site does not recognise has no row here. | ||
| European Union | Permitted, with conditions | 21 food categories highest permitted level 10,000 mg/l Show every food category
| Regulation (EC) No 1333/2008, Annex IIand 20 further provisionsretrieved 2026-10-18 |
| Great Britain | Permitted, with conditions | 20 food categories highest permitted level 10,000 mg/kg or mg/l Show every food category
| Assimilated Regulation (EC) No 1333/2008, Annex II (as at 28 June 2024)and 19 further provisionsretrieved 2026-10-18 |
| Japan | No listing matchedThis site imports only Japan’s list of designated additives (Appended Table 1 to the Regulations for Enforcement of the Food Sanitation Act), matched by English name. Existing additives, natural flavouring agents and ordinary foods used as additives are permitted outside that list and are not imported, so an empty row does not show that Japan does not permit the substance. | ||
| South Korea | No listing matchedThis site imports Part III of South Korea’s Standards and Specifications for Food Additives, matched by CAS number, then INS number, then exact name. Mixed preparations and sanitisers are not imported, and an entry whose identifiers disagreed with a page’s is held for review, so an empty row does not show that South Korea does not permit the substance. | ||
| United States | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. | ||
| Codex Alimentarius | Permitted, with conditions | 57 food categories highest permitted level 25,000 mg/kg Show every food category and its notes
| CXS 192-1995 Table One, INS 434and 56 further provisionsretrieved 2026-09-07 |
How much is permitted
A listing usually limits the quantity as well as the food. Only one of the forms that takes is a figure: quantum satis and good manufacturing practice permit the amount the technological effect requires and no more, which is a limit rather than the absence of one. Figures below are the range across every food category this page is listed in, and categories differ between regulators — see how much is permitted.
| European Union | 10 mg/kg – 10,000 mg/kg | 19 numeric limit, 2 quantum satis |
|---|---|---|
| Great Britain | 10 mg/kg – 10,000 mg/kg | 18 numeric limit, 2 quantum satis |
| Codex Alimentarius | 10 mg/kg – 25,000 mg/kg | 57 numeric limit |
What it is made from
Made by attaching ethylene oxide units to sorbitan monopalmitate. The palmitic acid may come from palm oil or animal fat.
- Vegan status depends on the source
- Vegetarian status depends on the source
- May raise a halal question
- May raise a kosher question
This is not an omission. What this additive is made from is not fixed — depending on the manufacturer it may be plant, animal or microbial in origin, nobody is required to say which, and the same product can change source between production runs. Ask the manufacturer if it matters to you; a label cannot answer it.
Compare other additives on the dietary indexes.
- CAS registry number
- 9005-66-7
The two specifications, compared
The European Union sets identity and purity by regulation; JECFA publishes its own through FAO, advisory until a country adopts it. Both documents are below in full. These are the parameters each puts a number on.
| Parameter | European Union | JECFA |
|---|---|---|
| Assay | no less than 66 % | no more than 70.5 % |
| Sulphated ash | — | no more than 0.25 % |
| Lead | no more than 2 mg/kg | no more than 2 mg/kg |
| Arsenic | no more than 3 mg/kg | — |
| Mercury | no more than 1 mg/kg | — |
| Cadmium | no more than 1 mg/kg | — |
The two documents state the same figures for every parameter compared here.
How the EU defines it
The legal specification an additive must meet to be sold as this E number in the EU — what it is, how it may be made, and the purity it must reach. From Commission Regulation (EU) No 231/2012.
E 434 Polyoxyethylene sorbitan monopalmitate (polysorbate 40)
A mixture of the partial esters of sorbitol and its mono- and dianhydrides with edible commercial palmitic acid and condensed with approximately 20 moles of ethylene oxide per mole of sorbitol and its anhydrides
Synonyms: Polysorbate 40; Polyoxyethylene (20) sorbitan monopalmitate
Assay, identification and purity criteria
Description and assay
- Assay
- Content not less than 66 % of oxyethylene groups, equivalent to not less than 97 % of polyoxyethylene (20) sorbitan monopalmitate on the anhydrous basis
- Description
- A lemon to orange-coloured oily liquid or semi-gel at 25 °C with a faint characteristic odour
Identification
- Solubility
- Soluble in water, ethanol, methanol, ethyl acetate and acetone. Insoluble in mineral oil
- Infrared absorption spectrum
- Characteristic of a partial fatty acid ester of a polyoxyethylated polyol
Purity criteria
- Water content
- Not more than 3 % (Karl Fischer method)
- Acid value
- Not more than 2
- Saponification value
- Not less than 41 and not more than 52
- Hydroxyl value
- Not less than 90 and not more than 107
- 1,4-dioxane
- Not more than 5 mg/kg
- Ethylene glycols (mono- and di-)
- Not more than 0,25 %
- Arsenic
- Not more than 3 mg/kg
- Lead
- Not more than 2 mg/kg
- Mercury
- Not more than 1 mg/kg
- Cadmium
- Not more than 1 mg/kg
How JECFA defines it
The international specification for identity and purity, prepared by the Joint FAO/WHO Expert Committee on Food Additives and published by FAO. It is a different document from any above, written by a different body and revised on its own cycle; it is advisory, and a country adopts it or does not.
INS 434 Polyoxyethylene (20) Sorbitan Monopalmitate
Consists of a mixture of the partial esters of sorbitol and its mono- and dianhydrides (which have an acid value below 7.5 and a water content below 0.2%) with edible commercial palmitic acid condensed with approximately 20 moles of ethylene oxide per mole of sorbitol and its anhydrides.
Synonyms: Polysorbate 40; INS No. 434
Assay, identification and purity criteria
Description and assay
- Specification history
- Prepared at the 17th JECFA (1973), published in FNP 4 (1978) and in FNP 52 (1992). Metals and arsenic specifications revised at the 55th JECFA (2000). An ADI of 0-25 mg/kg bw was established at the 17th JECFA (1973)
- C.A.S. number
- 9005-66-7
- Structural formula
- Nominal formula and approximate composition: where w + x + y + z = approx. 20 and RCO- is the fatty acid moiety
- Assay
- Not less than 66.0 and not more than 70.5% of oxyethylene groups, equivalent to not less than 97.0 and not more than 103.0% of polyoxyethylene (20) sorbitan monopalmitate calculated on the anhydrous basis. Lemon to orange coloured, oily liquid or semi-gel at 25 o , with a faint
- DESCRIPTION
- characteristic odour
- FUNCTIONAL USES
- Emulsifier, dispersing agent
- METHOD OF ASSAY
- Determine the content of Oxyethylene groups .
Identification
- Solubility (Vol. 4)
- Soluble in water, ethanol, methanol, ethyl acetate and acetone; insoluble in mineral oil
- Infrared absorption
- The infrared spectrum of the sample is characteristic of a partial fatty acid ester of a polyoxyethylated polyol
- Colour reaction
- To 5 ml of a 5% (w/v) aqueous solution of the sample add 10 ml of ammonium cobaltothiocyanate solution and 5 ml of chloroform, shake well and allow to separate; a blue colour is produced in the chloroform layer. (Ammonium cobaltothiocyanate solution: 37.5 g of cobalt nitrate and 150 g of ammonium thiocyanate made up to 100 ml with water - freshly prepared).
- Test for fatty acids
- To 5 ml of a 5% (w/v) aqueous solution of the sample add 5 ml sodium hydroxide TS. Boil for a few min, cool, and acidify with dilute hydrochloric acid. The solution is strongly opalescent, owing to the fatty acids liberated.
- Gelatinization
- A mixture of 60 parts by volume of the sample and 40 parts of water yields a gelatinous mass at or below room temperature
- Saponification (Vol. 4)
- 100 g of the sample yields approximately 20 g of fatty acids and 78 g of polyols
Purity criteria
- Water (Vol. 4)
- Not more than 3% (Karl Fischer Method)
- Sulfated ash (Vol. 4)
- Not more than 0.25% Test 5 g of the sample
- Acid value (Vol. 4)
- Not more than 2
- Saponification value (Vol. 4)
- Not less than 41 and not more than 52
- Hydroxyl value (Vol. 4)
- Not less than 90 and not more than 107
- Lead (Vol. 4)
- Not more than 2 mg/kg Determine using an atomic absorption technique appropriate to the specified level. The selection of sample size and method of sample preparation may be based on the principles of the method described in Volume 4, “Instrumental Methods.”
Authorised in other additives, enzymes, flavourings and nutrients
These authorisations are not for use in food. They let this substance be used inside another additive, a food enzyme, a flavouring or a nutrient preparation — often as a carrier — and it reaches food only as part of that product. Annex III to Regulation (EC) No 1333/2008.
| Part | May be used in | Maximum level | Citation |
|---|---|---|---|
| Annex III, Part 1: Carriers in food additives | Antifoaming agentsAuthorised as a member of Table 4 of Part 6 (Polysorbates), listed as "E 432 – E 436 Polysorbates (Table 4 of Part 6)" | quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 1, via Table 4 of Part 6 |
| Annex III, Part 1: Carriers in food additives | Colours and fat-soluble antioxidantsAuthorised as a member of Table 4 of Part 6 (Polysorbates), listed as "E 432 – E 436 Polysorbates (Table 4 of Part 6)" | quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 1, via Table 4 of Part 6 |
| Annex III, Part 1: Carriers in food additives | Glazing agents for fruitAuthorised as a member of Table 4 of Part 6 (Polysorbates), listed as "E 432 – E 436 Polysorbates" | quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 1, via Table 4 of Part 6 |
| Annex III, Part 2: Food additives other than carriers in food additives | Preparations of colours, contrast enhancers, fat soluble antioxidants and glazing agents for fruitAuthorised as a member of Table 4 of Part 6 (Polysorbates), listed as "E 432 – E 436 Polysorbates" Note (1): Except enzymes authorised as food additives. | quantum satis | Regulation (EC) No 1333/2008, Annex III, Part 2, via Table 4 of Part 6 |
| Annex III, Part 4: Food additives including carriers in food flavourings | All flavourings, except liquid smoke flavourings and flavourings based on spice oleoresinsAuthorised as a member of Table 4 of Part 6 (Polysorbates), listed as "E 432 – E 436 Polysorbates (Table 4 of Part 6)" Note (2): Spice oleoresins are defined as extracts of spices from which the extraction solvent has been evaporated leaving a mixture of the volatile oil and resinous material from the spice. | 10 000 mg/kg in flavourings | Regulation (EC) No 1333/2008, Annex III, Part 4, via Table 4 of Part 6 |
| Annex III, Part 4: Food additives including carriers in food flavourings | Foodstuffs containing liquid smoke flavourings and flavourings based on spice oleoresinsAuthorised as a member of Table 4 of Part 6 (Polysorbates), listed as "E 432 – E 436 Polysorbates (Table 4 of Part 6)" | 1 000 mg/kg in final food | Regulation (EC) No 1333/2008, Annex III, Part 4, via Table 4 of Part 6 |
| Annex III, Part 5, Section A: Food additives added in nutrients except in nutrients intended to be used in foodstuffs listed in Part E, point 01.10, of Annex II and foodstuffs for infants and young children listed in Part E, point 13.1, of Annex II | In beta carotene, lutein, lycopene and vitamins A, D and E preparationsAuthorised as a member of Table 4 of Part 6 (Polysorbates), listed as "E 432 – E 436 Polysorbates (Table 4 of Part 6)" Can be used as a carrier: Yes | quantum satis only in beta carotene, lutein, lycopene and vitamin E preparations. In vitamin A and D preparations maximum level in final food 2 mg/kg | Regulation (EC) No 1333/2008, Annex III, Part 5, Section A, via Table 4 of Part 6 |
Every name it appears under
40 recorded names. A label may use any of them.
E number
- E434
INS number
- 434
CAS registry number
- 9005-66-7
As it appears in regulation
- Polyoxyethylene sorbitan monopalmitate
- Polyoxyethylene sorbitan monopalmitate (polysorbate 40)
- polysorbate 40
Other names
- E 434
- Polyoxyethylene (20) sorbitan
- Polyoxyethylene (20) sorbitan monopalmitate
- Polyoxyethylene sorbitan monopalmitate (polysorbate 40)
- Polysorbate 40
Hazard reference values
| Type | Value | Population | Assessed by | Opinion |
|---|---|---|---|---|
| group ADI | 25 mg/kg bw/day (as total polyoxyethylene (20) sorbitan esters) | — | JECFA | 2026 |
Evidence and how bodies read it
What assessing bodies concluded
Each conclusion is paraphrased in the body's own framing, from the published opinion linked beneath it. Where bodies differ, both stand; this site does not adjudicate between them or add a view of its own.
EFSA 2015
The ANS Panel found no concern regarding genotoxicity, carcinogenicity or developmental toxicity for polysorbates 20, 80, 40, 60 and 65 (E 432–E 436), and allocated a group ADI of 25 mg/kg bw/day (the SCF value had been 10). It noted that high-level toddler exposure was very close to the ADI and that more usage and analytical data were needed to reduce uncertainty.
Common questions
Assembled from what is above, in the words the questions are usually asked in. Each answer is the same statement the relevant section makes, with the same citations behind it.
- What is E 434?
- E 434 is Polyoxyethylene (20) sorbitan monopalmitate. Also known as polysorbate 40, this emulsifier is used in baked goods, icings and non-dairy creamers.
- What is Polyoxyethylene (20) sorbitan monopalmitate used for in food?
- It is listed as an emulsifier — the role Codex assigns it. This page shows every function each regulator records, with the citation for each.
- Where is Polyoxyethylene (20) sorbitan monopalmitate permitted?
- Of the seven regulators this site reads, the EU, Great Britain and the Codex standard permit it. Each permission is for named foods at named levels, not a blanket one; the table on this page gives them with citations.
- Is Polyoxyethylene (20) sorbitan monopalmitate vegan?
- It depends on the source, and a label will not tell you. Polyoxyethylene (20) sorbitan monopalmitate can be made from plant or animal material, manufacturers are not obliged to say which, and the same product can change between production runs. Anyone who needs to know has to ask the manufacturer.
Sources for this page
- eu retrieved 2026-10-18
- gb retrieved 2026-10-18
- gsfa retrieved 2026-09-07
- euspecs retrieved 2026-10-18
- jecfaspecs retrieved 2026-09-23
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