Molekula
Potassium dihydrogen citrate
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 dihydrogen citrate is a water-soluble salt used as a buffering agent and pH regulator in pharmaceuticals and food products. It is also employed in analytical chemistry and as a reagent in laboratory settings. Available in powder form with a molecular weight of 230.21 g/mol, it has a CAS number of 866-83-1 and is stable at ambient storage conditions.
Molekula supplies Potassium dihydrogen citrate in 500 g packs, from £93.24 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 6 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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500 g — £77.70 per pack ex VAT · £93.24 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.
Other grades of Potassium dihydrogen citrate
| Grade | Purity | Price |
|---|---|---|
| Potassium dihydrogen citrate 96-102% | ≥99% purity | Price on request |
Specifications
| Property | Value |
|---|---|
| Appearance | White solid |
| Identification | Conforms to reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90028099 |
| CAS Number | 866-83-1 |
| IUPAC Name | potassium 3-carboxy-3,5-dihydroxy-5-oxopentanoate |
| EC Number | 212-753-4 |
| Molecular Formula | KH2C6H5O7 |
| Molecular Weight | 230.21 |
| Exact Mass | 229.9829 |
| SMILES | C(C(=O)O)C(CC(=O)[O-])(C(=O)O)O.[K+] |
| InChIKey | WKZJASQVARUVAW-UHFFFAOYSA-M |
| InChI | InChI=1S/C6H8O7.K/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);/q;+1/p-1 |
| PubChem CID | 23678371 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29181550 |
| Tariff Code | 2918150090 |
Safety & GHS
Detailed safety information available in the SDS — see Documents below.
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, monopotassium salt
- 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, potassium salt (1:1)
- 2-HYDROXY-1,2,3-PROPANETRICARBOXYLIC ACID POTASIUM SALT (1:1)
- INS NO.332(I)
- Monobasic potassium citrate
- monopotassium citrate
- potassium 3,4-dicarboxy-3-hydroxybutanoate
- Potassium citrate monobasic
- Potassium dihydrogen 2-hydroxypropane-1,2,3-tricarboxylate
- potassium;3-carboxy-3,5-dihydroxy-5-oxopentanoate
Frequently asked questions
What is potassium dihydrogen citrate used for?
It is commonly used as a buffering agent and pH regulator in pharmaceuticals and food products.
What is the chemical formula and molecular weight?
The formula is KH2C6H5O7 with a molecular weight of 230.21 g/mol.
How should potassium dihydrogen citrate be stored?
It should be stored at ambient temperature, protected from moisture and heat.
What grade is available?
The product is supplied to a specification of Appearance: white solid, and Identification: conforms to reference. Contact Molekula for details of available grades.
Can Molekula supply it in bulk?
Yes, Molekula can supply potassium dihydrogen citrate in bulk quantities upon request.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS).
Where can I buy Potassium dihydrogen citrate?
Directly from Molekula, which lists Potassium dihydrogen citrate in 500 g packs from £93.24 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.