Sodium acid tartrate

E number E335(i)

Listed as a raising agent by Canada.

Listed as raising agents (CA)
Chemical structure of Sodium acid tartrate, from PubChem compound 23684900
Structure from PubChem CID 23684900 (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.

The monosodium salt of tartaric acid, which keeps one acid group, used as an acidity regulator. The site's sodium tartrate page is the fully neutralised disodium salt.

Where it is and isn’t permitted

Status of Sodium acid tartrate 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 ZealandNo 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.Related listing with permitted uses here: Sodium tartrate (E335). This site cannot tell whether that listing covers this exact form.
CanadaHealth CanadaPermitted

no numerical limit (good manufacturing practice)

In: Baking Powder. Purpose: Acid-reacting material. Limit: Good Manufacturing Practice.

Health Canada, List of Permitted Acidity Regulators and Acid-Reacting Materials (List 10), item S.3retrieved 2026-10-17
European UnionEuropean Commission / EFSAPermitted, with conditions

31 food categories

highest permitted level 100,000 mg/l

Show every food category
  • 1.3 unflavoured fermented milk products heat-treated after fermentation — 750 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 750 mg/l.
  • 1.8 Dairy analogues, including beverage whiteners — 240 mg/kgAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 240 mg/kg.
  • 12.2.2 Seasonings and condiments — 17,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 17000 mg/l.
  • 12.4 Mustard — 12,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 12000 mg/l.
  • 12.5 Soups and broths — 240 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 240 mg/l.
  • 12.6 Sauces — 4,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 4000 mg/l.
  • 12.7 Salads and savoury-based sandwich spreads — 1,800 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 1800 mg/l.
  • 12.9 Protein products excluding products covered in category 1 8 — 240 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 240 mg/l.
  • 13.1.3 Processed cereal-based foods and baby foods as defined by Regulation (EU) No 609/2013 — 5,000 mg/kgAuthorised under E 335, Sodium tartrates. ML = 5000 mg/kg. only L(+)-form; only Biscuits and rusks and baby foods. Note 42: As a residue.
  • 14.1.4 Flavoured_drinks — 4,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 4000 mg/l.
  • 14.2.6 Spirit drinks as defined in Regulation (EU) 2019/787 — 1,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 1000 mg/l.
  • 14.2.7.1 Aromatised wines — 8,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 8000 mg/l.
  • 14.2.7.2 Aromatised wine-based drinks — 8,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 8000 mg/l.
  • 14.2.7.3 Aromatised wine-product cocktails — 8,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 8000 mg/l.
  • 14.2.8 Other alcoholic beverages including mixtures of alcoholic beverages with non-alcoholic beverages and other alcoholic beverages based on distilled alcohol with alcoholic strength by volume less than 15 % — 8,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 8000 mg/l.
  • 15.1 Potato- cereal- flour- or starch-based snacks — 60,000 mg/kgAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 60000 mg/kg.
  • 16 Desserts excluding products covered in category 1 3 and 4 — 3,000 mg/kgAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 3000 mg/kg.
  • 17.1 food supplements supplied in a solid form excluding food supplements for infants and young children’, — 100,000 mg/kgAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 100000 mg/kg. except food supplements in chewable form.
  • 17.2 food supplements supplied in a liquid form excluding food supplements for Infants and young children — 6,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 6000 mg/l.
  • 2.2.2 Other fat and oil emulsions including spreads as defined by Regulation (EC) No 1234/2007 and liquid emulsions — 1,300 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 1300 mg/l.
  • 4.2.3 canned or bottled fruit and vegetables — quantum satisAuthorised under E 335, Sodium tartrates. quantum satis.
  • 4.2.4.1 fruit and vegetable preparations excluding compote — 3,000 mg/kgAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 3000 mg/kg.
  • 4.2.6 processed potato products — 240 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 240 mg/l.
  • 5.2 Other confectionery including breath freshening micro-sweets — 25,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 25000 mg/l.
  • 5.3 chewing gum — 25,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 25000 mg/l.
  • 5.4 Decorations, coatings and fillings, except fruit-based fillings covered by category 4.2.4 — 11,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 11000 mg/l.
  • 6.7 pre-cooked or processed cereals — 740 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 740 mg/l.
  • 7.1 Bread and rolls — 15,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 15000 mg/l. except products in 7.1.1 and 7.1.2.
  • 7.2 Fine bakery wares — 18,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 18000 mg/l.
  • 8.3.2 Heat-treated meat products — 3,000 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 3000 mg/l. except foie gras, foie gras entier, blocs de foie gras, Libamáj, libamáj egészben, libamáj tömbben’;.
  • 9.2 Processed fish and fishery products including molluscs and crustaceans — 2,300 mg/lAuthorised under Tartaric acid – tartrates E 334 – 337 and E 354. ML = 2300 mg/l.
Regulation (EC) No 1333/2008, Annex IIand 30 further provisionsretrieved 2026-10-18
Great BritainFood Standards Agency / Food Standards ScotlandPermitted, with conditions

71 food categories

highest permitted level 5,000 mg/kg or mg/l

Show every food category
  • 1.3 Unflavoured fermented milk products, heat-treated after fermentation — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 1.4 Flavoured fermented milk products including heat-treated products — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 1.6.3 Other creams — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 1.7.1 Unripened cheese excluding products falling in category 16 — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. except mozzarella.
  • 1.7.5 Processed cheese — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 1.7.6 Cheese products (excluding products falling in category 16) — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 1.8 Dairy analogues, including beverage whiteners — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 10.2 Processed eggs and egg products — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 11.2 Other sugars and syrups — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.1.2 Salt substitutes — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.2.2 Seasonings and condiments — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.3 Vinegars and diluted acetic acid (diluted with water to 4-30 % by volume) — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.4 Mustard — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.5 Soups and broths — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.6 Sauces — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.7 Salads and savoury based sandwich spreads — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.8 Yeast and yeast products — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 12.9 Protein products, excluding products covered in category 1.8 — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 13.1.3 Processed cereal-based foods and baby foods for infants and young children as defined by Commission Directive 2006/125/EC — 5,000 mg/kg or mg/lAuthorised under E 335, Sodium tartrates. ML = 5000. only L(+)-form; only biscuits and rusks and baby foods. Note (42): As a residue.
  • 13.2 Dietary foods for special medical purposes defined in Directive 1999/21/EC (excluding products from food category 13.1.5) — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 13.3 Dietary foods for weight control diets intended to replace total daily food intake or an individual meal (the whole or part of the total daily diet) — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 13.4 Foods suitable for people intolerant to gluten as defined by Commission Regulation (EC) No 41/2009 — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. including dry pasta.
  • 14.1.2 Fruit juices as defined by Directive 2001/112/EC and vegetable juices — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. only vegetable juices.
  • 14.1.3 Fruit nectars as defined by Directive 2001/112/EC and vegetable nectars and similar products — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. only vegetable nectars, E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 14.1.4 Flavoured drinks — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E 421, E 953, E 965, E 966 and E 967 may not be used E 968 may not be used except where specifically provided for in this food category.
  • 14.1.5.2 Other — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. excluding unflavoured leaf tea; including flavoured instant coffee; E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used in drinks.
  • 14.2.3 Cider and perry — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 14.2.4 Fruit wine and made wine — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 14.2.5 Mead — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 14.2.6 Spirit drinks as defined in Regulation (EC) No 110/2008 — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. except whisky or whiskey; E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used except in liqueurs.
  • 14.2.7.1 Aromatised wines — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 14.2.7.2 Aromatised wine-based drinks — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 14.2.7.3 Aromatised wine-product cocktails — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 14.2.8 Other alcoholic drinks including mixtures of alcoholic drinks with non-alcoholic drinks and spirits with less than 15 % of alcohol — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 420, E421, E 953, E965, E 966, E 967 and E 968 may not be used.
  • 15.1 Potato-, cereal-, flour- or starch-based snacks — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 15.2 Processed nuts — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 16 Desserts excluding products covered in categories 1, 3 and 4 — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 17.1 Food supplements supplied in a solid form, excluding food supplements for infants and young children — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 410, E 412, E 415, E 417 and E 425 may not be used to produce dehydrated food supplements intended to rehydrate on ingestion.
  • 17.2 Food supplements supplied in a liquid form, excluding food supplements for infants and young children — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 18 Processed foods not covered by categories 1 to 17, excluding foods for infants and young children — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 2.2.2 Other fat and oil emulsions including spreads as defined by Regulation (EC) No 1234/2007 and liquid emulsions — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 2.3 Vegetable oil pan spray — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 3 Edible ices — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 4.2.1 Dried fruit and vegetables — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. E 410, E 412, E 415 E 417 may not be used to produce dehydrated foods intended to rehydrate on ingestion.
  • 4.2.2 Fruit and vegetables in vinegar, oil, or brine — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 4.2.3 Canned or bottled fruit and vegetables — quantum satisAuthorised under E 335, Sodium tartrates. quantum satis.
  • 4.2.4.1 Fruit and vegetable preparations excluding compote — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 4.2.5.1 Extra jam and extra jelly as defined by Directive 2001/113/EC — quantum satisAuthorised under E 335, Sodium tartrates. quantum satis.
  • 4.2.5.2 Jam, jellies and marmalades and sweetened chestnut puree as defined by Directive 2001/113/EC — quantum satisAuthorised under E 335, Sodium tartrates. quantum satis.
  • 4.2.5.3 Other similar fruit or vegetable spreads — quantum satisAuthorised under E 335, Sodium tartrates. quantum satis.
  • 4.2.5.4 Nut butters and nut spreads — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 4.2.6 Processed potato products — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 5.1 Cocoa and chocolate products as covered by Directive 2000/36/EC — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. only energy-reduced or with no added sugar.
  • 5.2 Other confectionery including breath refreshening microsweets — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. The substances listed under numbers E 400, E 401, E 402, E 403, E 404, E 406, E 407, 407a, E 410, E 412, E 413, E 414, E 415, E 417, E 418, E 425 and E 440 may not be used in jelly mini-cups, defined, for the purpose of this Regulation, as jelly confectionery of a firm consistence, contained in semi rigid mini-cups or mini-capsules, intended to be ingested in a single bite by exerting pressure on the mini-cups or mini-capsule to project the confectionery into the mouth; E 410, E 412, E 415 E 417 may not be used to produce dehydrated foods intended to rehydrate on ingestion. E425 may not be used in jelly confectionery.
  • 5.3 Chewing gum — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 5.4 Decorations, coatings and fillings, except fruit based fillings covered by category 4.2.4 — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 6.2.2 Starches — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 6.3 Breakfast cereals — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 6.4.2 Dry pasta — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. only gluten free and/or pasta intended for hypoproteic diets in accordance with Directive 2009/39/EC.
  • 6.4.4 Potato gnocchi — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. except fresh refrigerated potato gnocchi.
  • 6.4.5 Fillings of stuffed pasta (ravioli and similar) — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 6.5 Noodles — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 6.6 Batters — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 6.7 Pre-cooked or processed cereals — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 7.1 Bread and rolls — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. except products in 7.1.1 and 7.1.2.
  • 7.2 Fine bakery wares — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 8.3.1 Non-heat-treated meat products — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 8.3.2 Heat-treated meat products — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. except foie gras, foie gras entier, blocs de foie gras, Libamáj, libamáj egészben, libamáj tömbben.
  • 8.3.3 Casings and coatings and decorations for meat — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 9.2 Processed fish and fishery products including mollusks and crustaceans — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis.
  • 9.3 Fish roe — quantum satisAuthorised under E 335, Sodium tartrates. Permitted as a member of Group I. quantum satis. only processed fish roe.
Assimilated Regulation (EC) No 1333/2008, Annex II (as at 28 June 2024)and 70 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.Related listing with permitted uses here: Sodium tartrate (E335). This site cannot tell whether that listing covers this exact form.
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.Related listing with permitted uses here: Sodium tartrate (E335). This site cannot tell whether that listing covers this exact form.
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.

Canada—1 GMP
European Union240 mg/kg – 100,000 mg/kg30 numeric limit, 1 quantum satis
Great Britain5,000 mg/kg1 numeric limit, 70 quantum satis

What it is made from

Made by neutralising one of tartaric acid's two acid groups with a sodium source.

  • Vegan
  • Vegetarian

Compare other additives on the dietary indexes.

InChIKey
NKAAEMMYHLFEFN-ZVGUSBNCSA-M
PubChem
CID 23684900

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 335(i) Monosodium tartrate

Synonyms: Monosodium salt of L-(+)-tartaric acid

Assay, identification and purity criteria

Description and assay

Chemical name
Monosodium salt of L-2,3-dihydroxybutanedioic acid; Monohydrated monosodium salt of L-(+)-tartaric acid
Chemical formula
C₄H₅O₆Na·H₂O
Molecular weight
194,05
Assay
Content not less than 99 % on the anhydrous basis
Description
Transparent colourless crystals

Identification

Test for tartrate
Passes test
Test for sodium
Passes test

Purity criteria

Loss on drying
Not more than 10,0 % (105 °C, 4 hours)
Oxalates
Not more than 100 mg/kg (expressed as oxalic acid, after drying)
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 335(i)

Every name it appears under

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

E number

  • E335

CAS registry number

  • 526-94-3
  • 60131-40-0

As it appears in regulation

  • Monosodium tartrate
  • Sodium tartrates
  • Tartaric acid – tartrates
  • Tartaric acid – tartrates E 334 – 337 and E 354

Other names

  • (2R,3R)-2,3-Dihydroxysuccinic acid, sodium salt
  • (2R,3R)2,3Dihydroxybutanedioic acid sodium salt (1:1)
  • Butanedioic acid, 2,3-dihydroxy-(2R,3R)-, monosodium salt
  • BUTANEDIOIC ACID, 2,3-DIHYDROXY-(2R,3R)-, SODIUM SALT (1:1)
  • Butanedioic acid, 2,3-dihydroxy-(theta-(theta,theta))-, monosodium salt
  • Butanedioic acid, 2,3-dihydroxy-, (R-(R*,R*))-, monosodium salt
  • Butanedioic acid, 2,3-dihydroxy-, monosodium salt, (2R,3R)-rel-
  • Butanedioic acid, 2,3-dihydroxy-, sodium salt (1:1), (2R,3R)-rel-
  • Butanedioic acid, 2,3dihydroxy (2R,3R), monosodium salt
  • Butanedioic acid, 2,3dihydroxy (2R,3R), sodium salt (1:1)
  • Butanedioic acid, 2,3dihydroxy (theta(theta,theta)), monosodium salt
  • Butanedioic acid, 2,3dihydroxy, (R(R*,R*)), monosodium salt
  • C4H5NaO6
  • INS NO.335(I)
  • INS-335(I)
  • Monobasic sodium tartrate
  • MONOSODIUM DL-TARTRATE
  • Monosodium L(+)tartrate
  • Monosodium L-(+)-tartrate
  • Monosodium salt of L-(+)-tartaric acid
  • Monosodium tartrate
  • Natrium hydrogen(2R,3R)tartrat
  • Natrium hydrogen-(2R,3R)-tartrat
  • Natriumtartrat
  • NKAAEMMYHLFEFN-ZVGUSBNCSA-M
  • sodium (2R,3R)-3-carboxy-2,3-dihydroxypropanoate
  • Sodium (2R,3R)-3-carboxy-2,3-dihydroxypropanoate (+/-)
  • Sodium Acid Tartrate
  • Sodium bitartrate
  • SODIUM BITARTRATE (II)
  • SODIUM BITARTRATE (MART.)
  • sodium hydrogen l-tartrate
  • Sodium hydrogen L-tartrate, anhydrous
  • Sodium hydrogen Ltartrate, anhydrous
  • Sodium hydrogen tartrate
  • Sodium hydrogentartrate, 98%
  • Sodium hydrogentartrate, p.a., 98%
  • Sodium hydrogentartrate, Vetec(TM) reagent grade, 98%
  • Sodium rel-(2R,3R)-3-carboxy-2,3-dihydroxypropanoate
  • sodium;(2R,3R)-2,3,4-trihydroxy-4-oxo-butanoate
  • sodium;(2R,3R)-2,3,4-trihydroxy-4-oxobutanoate
  • Tartaric acid, monosodium salt

Hazard reference values

No reference value for this substance in the sources we hold.

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 335(i)?
E 335(i) is Sodium acid tartrate. The monosodium salt of tartaric acid, which keeps one acid group, used as an acidity regulator. The site's sodium tartrate page is the fully neutralised disodium salt.
What is Sodium acid tartrate used for in food?
It is listed as a raising agent — the role Canada assigns it. This page shows every function each regulator records, with the citation for each.
Where is Sodium acid tartrate permitted?
Of the seven regulators this site reads, Canada, 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 Sodium acid tartrate vegan?
Yes. Sodium acid tartrate is not derived from animals, and is suitable for vegetarians. This page says what it is made from and how.

Sources for this page

  • ca 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.

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