Molekula
Disodium tartrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Disodium tartrate is a sodium salt of tartaric acid, commonly used as a buffering agent, food additive (E335), and in biochemical applications like pH adjustment in buffers. Laboratories also use it as a reference standard for calibrating Karl Fischer water-determination reagents, and it serves as a sequestering agent and emulsifier in food and pharmaceutical formulations. It appears as a white crystalline powder, soluble in water but insoluble in alcohol. Catalogue details: CAS 868-18-8, molecular formula C4H4Na2O6, molecular weight 194.05 g/mol, stable at ambient storage with no signal word classification. Molekula supplies disodium tartrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £24.90 per pack ex VAT · £29.88 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless transparent crystal or white crystal powder |
| Heavy metals | ≤0.001% |
| Loss on Drying | ≤0.5% |
| Chloride (Cl-) | ≤0.15% |
| Content | ≥99% |
| Arsenic (As) | ≤0.0003% |
| Oxalate (Oxalic acid) | ≤0.04% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90026490 |
| CAS Number | 868-18-8 |
| IUPAC Name | disodium;(2R,3R)-2,3-dihydroxybutanedioate |
| EC Number | 212-773-3 |
| Molecular Formula | C4H4Na2O6 |
| Molecular Weight | 194.05 |
| Exact Mass | 193.9803 |
| SMILES | [C@@H]([C@H](C(=O)[O-])O)(C(=O)[O-])O.[Na+].[Na+] |
| InChIKey | HELHAJAZNSDZJO-OLXYHTOASA-L |
| InChI | InChI=1S/C4H6O6.2Na/c5-1(3(7)8)2(6)4(9)10;;/h1-2,5-6H,(H,7,8)(H,9,10);;/q;2*+1/p-2/t1-,2-;;/m1../s1 |
| PubChem CID | 162637 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29181350 |
| Tariff Code | 2918130000 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Bisodium tartrate
- BUTANEDIOIC ACID, 2,3-DIHYDROXY-(2R,3R)-, DISODIUM SALT
- Butanedioic acid, 2,3-dihydroxy-(2R,3R)-, sodium salt (1:2)
- disodium (2R,3R)-2,3-dihydroxybutanedioate
- Disodium L-(+)-tartrate
- INS NO.335(II)
- Sal tartar
- Sodium L-tartrate
- Sodium tartrate
- TARTARIC ACID, DISODIUM SALT
Frequently asked questions
What is disodium tartrate commonly used for?
Disodium tartrate is primarily used as a food additive (E335), an acidity regulator, and a buffering agent in beverages, pharmaceuticals, and baking powders.
What is the chemical formula and molecular weight of disodium tartrate?
The chemical formula is **C₄H₄Na₂O₆**, and the molecular weight is **194.05 g/mol**.
How should disodium tartrate be stored?
Store in a cool, dry place at ambient temperature, away from moisture and strong oxidizing agents.
What grades of disodium tartrate does Molekula supply?
Molekula supplies **food-grade (E335)** and **pharmaceutical-grade** disodium tartrate, meeting relevant regulatory standards.
Can Molekula supply disodium tartrate in bulk quantities?
Yes, Molekula offers bulk packaging options for disodium tartrate, including drums (25kg) and larger quantities upon request.
What documentation comes with an order of disodium tartrate?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.