Molekula
Potassium sodium tartrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Potassium sodium tartrate is a crystalline salt used in food additives, pharmaceuticals, and chemical synthesis. It serves as a stabilizer and buffering agent. Available in powder form with a molecular weight of 210.16 g/mol, it has a CAS number of 6381-59-5 and is stable at ambient storage conditions. No signal word applies.
Molekula supplies Potassium sodium tartrate at ≥ 99.0% purity in 100 g packs, from £35.40 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
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 — £29.50 per pack ex VAT · £35.40 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 | White crystalline powder |
| Water | 24.0 - 26.0% |
| Heavy metals | ≤ 10ppm |
| Identification | Conforms to reference |
| pH | 6.5 - 8.5 (5% Solution) |
| Assay | ≥ 99.0% |
| Insoluble Matter | ≤ 0.05% |
| Iron (Fe) | ≤ 10ppm |
| Ammonia (NH3) | Conforms to USP monograph |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 89986226 |
| CAS Number | 6381-59-5 |
| Molecular Formula | C4H4KNaO6 |
| Molecular Weight | 210.16 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2918.13.3000 |
| Tariff Code | 29181300 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is potassium sodium tartrate used for?
It is primarily used as a stabilizer in food and pharmaceuticals, and as a reagent in chemical synthesis.
What is the chemical formula and molecular weight of potassium sodium tartrate?
The formula is C4H4KNaO6 with a molecular weight of 210.16 g/mol.
How should potassium sodium tartrate be stored?
It should be stored at ambient temperature, protected from moisture and heat.
What grade of potassium sodium tartrate does Molekula supply?
Molekula supplies potassium sodium tartrate as a white crystalline powder with an assay of at least 99.0%, heavy metals and iron each at or below 10 ppm, insoluble matter at or below 0.05%, and ammonia conforming to the USP monograph.
Can Molekula supply potassium sodium tartrate in bulk?
Yes, Molekula can supply potassium sodium tartrate in bulk quantities upon request.
What documentation comes with a purchase of potassium sodium tartrate?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS).
Where can I buy Potassium sodium tartrate?
Directly from Molekula, which lists Potassium sodium tartrate in 100 g packs from £35.40 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.