Potassium adipate

E number E357

Chemical structure of Potassium adipate, from PubChem compound 9794493
Structure from PubChem CID 9794493 (National Library of Medicine, public domain). A depiction of one compound: where a listing covers a family, or a substance has no single structure, this page shows none.

Potassium adipate is an acidity regulator permitted in the EU within the same shared limits as adipic acid and its other salts.

Where it is and isn’t permitted

Status of Potassium adipate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
Australia and New ZealandFood Standards Australia New ZealandPermitted, with conditions

54 food categories

no numerical limit (good manufacturing practice)

Show every food category
  • 0 Preparations of food additives — GMPSalt reduced and low sodium foods only.
  • 1.1.1 Liquid milk (including buttermilk) — GMPSalt reduced and low sodium foods only. Only UHT goats milk.
  • 1.1.2 Liquid milk products and flavoured liquid milk — GMPSalt reduced and low sodium foods only.
  • 1.2.2 Fermented milk products and rennetted milk products — GMPSalt reduced and low sodium foods only.
  • 1.3 Condensed milk and evaporated milk — GMPSalt reduced and low sodium foods only.
  • 1.4.1 Cream, reduced cream and light cream — GMPSalt reduced and low sodium foods only. Only UHT creams and creams receiving equivalent or greater heat treatments.
  • 1.4.2 Cream products (flavoured, whipped, thickened, sour cream etc) — GMPSalt reduced and low sodium foods only.
  • 1.5 Dried milk, milk powder, cream powder — GMPSalt reduced and low sodium foods only.
  • 1.6 Cheese and cheese products — GMPSalt reduced and low sodium foods only.
  • 10.2 Liquid egg products — GMPSalt reduced and low sodium foods only.
  • 10.3 Frozen egg products — GMPSalt reduced and low sodium foods only.
  • 10.4 Dried or heat coagulated egg products — GMPSalt reduced and low sodium foods only.
  • 11.1.1 Rainbow sugar — GMPSalt reduced and low sodium foods only.
  • 11.3.1 Dried honey — GMPSalt reduced and low sodium foods only.
  • 11.4 Tabletop sweeteners — GMPSalt reduced and low sodium foods only.
  • 12.1.2 Reduced sodium salt mixture — GMPSalt reduced and low sodium foods only.
  • 12.1.3 Salt substitute — GMPSalt reduced and low sodium foods only.
  • 12.5 Yeast and yeast products — GMPSalt reduced and low sodium foods only.
  • 12.6 Vegetable protein products — GMPSalt reduced and low sodium foods only.
  • 13.3 Formulated meal replacements and formulated supplementary foods — GMPSalt reduced and low sodium foods only.
  • 13.4 Formulated supplementary sports foods — GMPSalt reduced and low sodium foods only.
  • 13.5 Food for special medical purposes — GMPSalt reduced and low sodium foods only.
  • 14.1.1.2 Carbonated, mineralised and soda waters — GMPSalt reduced and low sodium foods only.
  • 14.1.2.1 Fruit and vegetable juices — GMPSalt reduced and low sodium foods only. For juice separated by other than mechanical means only.
  • 14.1.2.2 Fruit and vegetable juice products — GMPSalt reduced and low sodium foods only.
  • 14.1.3 Water based flavoured drinks — GMPSalt reduced and low sodium foods only.
  • 14.1.4 Formulated Beverages — GMPSalt reduced and low sodium foods only.
  • 14.1.5 Coffee, coffee substitutes, tea, herbal infusions and similar products — GMPSalt reduced and low sodium foods only.
  • 14.2.3 Wine based drinks and reduced alcohol wines — GMPSalt reduced and low sodium foods only.
  • 14.2.4.1 Fruit wine products and vegetable wine products — GMPSalt reduced and low sodium foods only.
  • 14.2.5 Spirits and liqueurs — GMPSalt reduced and low sodium foods only.
  • 14.3 Alcoholic beverages not included in item 14.2 — GMPSalt reduced and low sodium foods only.
  • 2.1 Edible oils essentially free of water — GMPSalt reduced and low sodium foods only.
  • 2.2.1.2 Butter products — GMPSalt reduced and low sodium foods only.
  • 2.2.1.3 Margarine and similar products — GMPSalt reduced and low sodium foods only.
  • 2.2.2 Oil emulsions (<80% oil) — GMPSalt reduced and low sodium foods only.
  • 20 Foods not included in items 0 to 14 — GMPSalt reduced and low sodium foods only.
  • 3 Ice cream and edible ices — GMPSalt reduced and low sodium foods only.
  • 4.1.3 Fruits and vegetables that are peeled, cut, or both peeled and cut — GMPSalt reduced and low sodium foods only.
  • 4.3 Processed fruits and vegetables — GMPSalt reduced and low sodium foods only.
  • 5.1 Chocolate and cocoa products — GMPSalt reduced and low sodium foods only.
  • 5.2 Sugar confectionery — GMPSalt reduced and low sodium foods only.
  • 5.4 Icings and frostings — GMPSalt reduced and low sodium foods only.
  • 6.3 Processed cereal and meal products — GMPSalt reduced and low sodium foods only.
  • 6.4 Flour products (including noodles and pasta) — GMPSalt reduced and low sodium foods only.
  • 7 Breads and bakery products — GMPSalt reduced and low sodium foods only.
  • 8.2 Processed meat, poultry and game products in whole cuts or pieces — GMPSalt reduced and low sodium foods only.
  • 8.3 Processed comminuted meat, poultry and game products, other than products listed in item 8.3.2 — GMPSalt reduced and low sodium foods only.
  • 8.3.2 Sausage and sausage meat containing raw, unprocessed meat — GMPSalt reduced and low sodium foods only.
  • 8.4 Edible casings — GMPSalt reduced and low sodium foods only.
  • 8.5 Animal protein products — GMPSalt reduced and low sodium foods only.
  • 9.2 Processed fish and fish products — GMPSalt reduced and low sodium foods only.
  • 9.3 Semi preserved fish and fish products — GMPSalt reduced and low sodium foods only.
  • 9.4 Fully preserved fish including canned fish products — GMPSalt reduced and low sodium foods only.
Food Standards Code, Schedule 15, S15—5and 53 further provisionsretrieved 2026-10-17
CanadaHealth CanadaNo 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 UnionEuropean Commission / EFSAPermitted, with conditions

5 food categories

highest permitted level 10,000 mg/l

Show every food category
  • 1.4 flavoured fermented milk products including heat-treated products — 1,000 mg/lPermitted as a member of Adipic acid - adipates. ML = 1000 mg/l. only fruit-flavoured desserts.
  • 14.1.4 Flavoured_drinks — 10,000 mg/lPermitted as a member of Adipic acid - adipates. ML = 10000 mg/l. only powders for home preparation of drinks.
  • 14.1.5.2 other — 10,000 mg/lPermitted as a member of Adipic acid - adipates. ML = 10000 mg/l. only powders for home preparation of drinks. Note 1: The additives may be added individually or in combination.
  • 16 Desserts excluding products covered in category 1 3 and 4 — 1,000 mg/kgPermitted as a member of Adipic acid - adipates. ML = 1000 mg/kg. only dry powdered dessert mixes. Note 1: The additives may be added individually or in combination.
  • 5.4 Decorations, coatings and fillings, except fruit-based fillings covered by category 4.2.4 — 2,000 mg/kgPermitted as a member of Adipic acid - adipates. ML = 2000 mg/kg. only fillings and toppings for fine bakery ware. Note 1: The additives may be added individually or in combination.
Regulation (EC) No 1333/2008, Annex IIand 4 further provisionsretrieved 2026-10-18
Great BritainFood Standards Agency / Food Standards ScotlandPermitted, with conditions

5 food categories

highest permitted level 10,000 mg/kg or mg/l

Show every food category
  • 1.4 Flavoured fermented milk products including heat-treated products — 1,000 mg/kg or mg/lPermitted as a member of E 355–357: Adipic acid — adipates. ML = 1000. only fruit-flavoured desserts.
  • 14.1.4 Flavoured drinks — 10,000 mg/kg or mg/lPermitted as a member of E 355–357: Adipic acid — adipates. ML = 10000. only powders for home preparation of drinks. Note (1): The additives may be added individually or in combination.
  • 14.1.5.2 Other — 10,000 mg/kg or mg/lPermitted as a member of E 355–357: Adipic acid — adipates. ML = 10000. only powders for home preparation of drinks. Note (1): The additives may be added individually or in combination.
  • 16 Desserts excluding products covered in categories 1, 3 and 4 — several limitsPermitted as a member of E 355–357: Adipic acid — adipates. (1) ML 1000: only dry powdered dessert mixes; (2) ML 6000: only gel-like desserts; (3) ML 1000: only fruit-flavoured desserts. Note (1): The additives may be added individually or in combination.
  • 5.4 Decorations, coatings and fillings, except fruit based fillings covered by category 4.2.4 — 2,000 mg/kg or mg/lPermitted as a member of E 355–357: Adipic acid — adipates. ML = 2000. only fillings and toppings for fine bakery ware. Note (1): The additives may be added individually or in combination.
Assimilated Regulation (EC) No 1333/2008, Annex II (as at 28 June 2024)and 4 further provisionsretrieved 2026-10-18
JapanConsumer Affairs AgencyNo 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 KoreaMinistry of Food and Drug SafetyNo 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 StatesFood and Drug AdministrationNot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

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.

Australia and New Zealand—54 GMP
European Union1,000 mg/kg – 10,000 mg/kg5 numeric limit
Great Britain1,000 mg/kg – 10,000 mg/kg4 numeric limit, 1 several limits

What it is made from

Made by neutralising adipic acid, which is produced from petroleum-derived cyclohexane, with a potassium source.

  • Vegan
  • Vegetarian

Compare other additives on the dietary indexes.

InChIKey
GCHCGDFZHOEXMP-UHFFFAOYSA-L
PubChem
CID 9794493

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 357 Potassium adipate

Assay, identification and purity criteria

Description and assay

Einecs
242-838-1
Chemical name
Potassium adipate
Chemical formula
C₆H₈K₂O₄
Molecular weight
222,32
Assay
Content not less than 99,0 % (on anhydrous basis)
Description
White odourless crystals or crystalline powder

Identification

Melting range
151-152 °C (for adipic acid)
Solubility
Approximately 60 g/100 ml water (20 °C)
Test for potassium
Passes test

Purity criteria

Water
Not more than 3 % (Karl Fischer)
Arsenic
Not more than 3 mg/kg
Lead
Not more than 2 mg/kg
Mercury
Not more than 1 mg/kg

Commission Regulation (EU) No 231/2012, Annex, E 357

Every name it appears under

34 recorded names. A label may use any of them.

E number

  • E357

CAS registry number

  • 19147-16-1

As it appears in regulation

  • Potassium adipate

Other names

  • 493TD6PDYS
  • ADIPIC ACID, DIPOTASSIUM SALT
  • Dipotassium adipate
  • Dipotassium Hexanedioate
  • Hexanedioic acid, dipotassium salt
  • Hexanedioic acid, potassium salt (1:2)
  • INS NO.357
  • INS-357
  • Kaliumadipat
  • Potassium adipate

Hazard reference values

Values set by assessing bodies. A body that has not set a value is not listed here.
TypeValuePopulationAssessed byOpinion
ADI5 mg/kg bw/day—JECFA1977

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated rather than machine-read, and none has been written for this substance yet.

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 357?
E 357 is Potassium adipate. Potassium adipate is an acidity regulator permitted in the EU within the same shared limits as adipic acid and its other salts.
Where is Potassium adipate permitted?
Of the seven regulators this site reads, Australia and New Zealand, the EU and Great Britain 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 Potassium adipate vegan?
Yes. Potassium adipate is not derived from animals, and is suitable for vegetarians. This page says what it is made from and how.

Sources for this page

  • anz retrieved 2026-10-17
  • eu retrieved 2026-10-18
  • gb retrieved 2026-10-18
  • euspecs retrieved 2026-10-18

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable: a JSON record of this additive is given on request —how to ask for access.

Follow changes to Potassium adipate:Atom feed — regulatory events, and any change the weekly refresh detects in its provisions.