Molekula
Potassium carbonate anhydrous ACS grade
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 carbonate anhydrous ACS grade is a white, deliquescent inorganic salt used primarily in chemical synthesis, pH buffering, and as a reagent in analytical chemistry. It serves as a strong base in organic reactions, a flux in glass manufacturing, and a food additive (E501) for acidity regulation. This reagent meets ACS specifications with a CAS number of 584-08-7, molecular formula K₂CO₃, and molecular weight of 138.21 g/mol. Store at ambient conditions in a tightly sealed container. The signal word is Warning, indicating moderate hazard. Molekula supplies potassium carbonate anhydrous ACS grade 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Water | ≤0.5% |
| Assay | ≥99% |
| Potassium Chloride (KCl) | ≤0.05% |
| Potassium Hydroxide (KOH) | ≤0.5% |
| Sodium carbonate (Na2CO3) | ≤0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless cubic crystals; hygroscopic |
| Odour | Odorless |
| Melting Point | 899 °C |
| Density | 2.29 g/cm³ |
| Solubility (other solvents) | Very soluble in water. Insoluble in ethanol |
Source: PubChem CID 11430 (HSDB, EU Food Improvement Agents)
Identification
| Property | Value |
|---|---|
| SKU | 90032466 |
| CAS Number | 584-08-7 |
| IUPAC Name | dipotassium;carbonate |
| EC Number | 209-529-3 |
| Molecular Formula | CK2O3 |
| Molecular Weight | 138.21 |
| Exact Mass | 137.9122 |
| SMILES | C(=O)([O-])[O-].[K+].[K+] |
| InChIKey | BWHMMNNQKKPAPP-UHFFFAOYSA-L |
| InChI | InChI=1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2 |
| PubChem CID | 11430 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28369950 |
| Tariff Code | 2836400000 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
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
- Carbonate of potash
- Carbonic acid, dipotassium salt
- Dipotassium carbonate
- K-Gran
- Kalium carbonicum
- Kaliumcarbonat
- Pearl ash
- POTASSIUM CARBONATE
- Potassium carbonate, anhydrous
- Salt of tartar
Frequently asked questions
What is potassium carbonate anhydrous ACS grade primarily used for?
Potassium carbonate anhydrous ACS grade is commonly used in laboratories for buffering solutions, qualitative analysis, and as a drying agent for organic liquids such as ketones, alcohols and amines.
What is the chemical formula and molecular weight of potassium carbonate anhydrous?
The chemical formula is K₂CO₃, and the molecular weight is 138.21 g/mol.
How should potassium carbonate anhydrous ACS grade be stored?
Store in a tightly sealed container at ambient temperature, away from moisture and humidity.
What grade of potassium carbonate is available from Molekula?
Molekula supplies ACS grade potassium carbonate anhydrous, meeting stringent purity standards for analytical applications.
Can Molekula supply potassium carbonate anhydrous in bulk quantities?
Yes, Molekula can provide potassium carbonate anhydrous in bulk, with quantities tailored to your requirements—please contact us for details.
What documentation comes with an order of potassium carbonate anhydrous ACS grade?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation to verify compliance with ACS specifications.
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.