Molekula
Potassium hydrogen carbonate
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
Potassium hydrogen carbonate is a white crystalline solid used in baking, pharmaceuticals, and as a pH regulator in industrial processes. It is also employed in fire extinguishers and as a source of carbon dioxide. In agriculture it is the active ingredient of foliar fungicides used in organic farming against powdery mildew and apple scab, and it also serves as a food acidity regulator. Available in powder form, it is stable at ambient temperatures. CAS: 298-14-6, Molecular formula: KHCO3, Molecular weight: 100.12 g/mol, Storage: Ambient, Signal word: Warning. Molekula supplies Potassium hydrogen carbonate 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.
Often bought together
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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500 g — £30.00 per pack ex VAT · £36.00 inc. VAT
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1 kg — £43.60 per pack ex VAT · £52.32 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 to off-white solid |
| Heavy metals | ≤ 5ppm |
| Insoluble Matter | ≤ 0.01% |
| Titration with HCl | ≥ 98.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Solubility (other solvents) | Freely soluble in water. Insoluble in ethanol |
| pKa | pKa = 6.37 |
Source: PubChem CID 516893 (EU Food Improvement Agents, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 22953449 |
| CAS Number | 298-14-6 |
| IUPAC Name | potassium hydrogen carbonate |
| EC Number | 206-059-0 |
| Molecular Formula | KHCO3 |
| Molecular Weight | 100.12 |
| Exact Mass | 99.9563 |
| SMILES | C(=O)(O)[O-].[K+] |
| InChIKey | TYJJADVDDVDEDZ-UHFFFAOYSA-M |
| InChI | InChI=1S/CH2O3.K/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1 |
| PubChem CID | 516893 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 28364020 |
| Tariff Code | 2836400000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- 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
- Armicarb
- CARBONIC ACID, MONOPOTASSIUM SALT
- Kafylox
- Kaligreen
- KHCO3
- Milstop
- Monopotassium carbonate
- Potassium acid carbonate
- Potassium bicarbonate
- Purple k
Frequently asked questions
What is potassium hydrogen carbonate used for?
It is commonly used as a buffering agent in food and pharmaceuticals, and in the production of carbon dioxide in baking applications.
What is the chemical formula and molecular weight of potassium hydrogen carbonate?
The formula is KHCO3 and the molecular weight is 100.12 g/mol.
How should potassium hydrogen carbonate be stored?
It should be stored at ambient temperature, in a dry place, away from moisture and incompatible substances.
What grade is available for potassium hydrogen carbonate?
Available in reagent grade and technical grade; specific grades may vary based on customer requirements.
Can Molekula supply potassium hydrogen carbonate in bulk?
Yes, Molekula can supply potassium hydrogen carbonate in bulk quantities; please contact sales for pricing and availability.
What documentation comes with an order of potassium hydrogen carbonate?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.