Molekula
Calcium carbonate
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
Calcium carbonate is a white, odorless powder used in pharmaceuticals, food additives, and industrial applications as a filler, neutralizer, or pH regulator. It has a CAS number of 471-34-1, a molecular formula of CaCO3, and a molecular weight of 100.09 g/mol. It is stable at ambient storage conditions and carries no signal word. Molekula supplies Calcium 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
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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1 kg — £30.90 per pack ex VAT · £37.08 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/ off white crystalline powder |
| Heavy metals | ≤ 0.002% |
| Identification | Conforms to reference |
| Pseudomonas aeruginosa | Absent in 1g |
| Loss on Drying | ≤ 2.0% |
| Chloride (Cl-) | ≤ 0.033% |
| Assay | 98.5 - 100.5% |
| Bulk density | 2.7 g/ml |
| Staphylococcus aureus | Absence in 1g |
| Cadmium (Cd) | ≤ 0.00005% |
| Iron (Fe) | ≤ 0.02% |
| Lead (Pb) | ≤ 0.002% |
| Mercury (Hg) | ≤ 0.00005% |
| Arsenic (As) | ≤ 0.00015% |
| Insoluble matter in acid | ≤ 0.2% |
| Barium (Ba) | Opalescence |
| Salmonella / 25g | Absent |
| E. Coli | Absent in 1g |
| Identification B | Positive |
| Sulphates (SO4)(2-) | ≤ 0.25% |
| Magnesium and Alkali salts | ≤ 1.0% |
| Moulds | ≤ 100cfu/g |
| Fluoride (F-) | ≤ 0.005% |
| Yeast | ≤ 100cfu/g |
| Enterobacteriaceae | Absent in 10g |
| Identification A | Positive |
| Aerosmesophil bacteria | ≤ 1000cfu/g |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Odour | Odorless |
| Solubility (other solvents) | Practically insoluble in water; soluble in dilute acids |
| Vapour Pressure | 0 mmHg (approx) |
| Refractive Index | 1.7216 |
Source: PubChem CID 10112 (HSDB, The National Institute for Occupational Safety and Health (NIOSH))
Identification
| Property | Value |
|---|---|
| SKU | 75479037 |
| CAS Number | 471-34-1 |
| IUPAC Name | calcium carbonate |
| EC Number | 207-439-9 |
| Molecular Formula | CaCO3 |
| Molecular Weight | 100.09 |
| Exact Mass | 99.9473 |
| SMILES | C(=O)([O-])[O-].[Ca+2] |
| InChIKey | VTYYLEPIZMXCLO-UHFFFAOYSA-L |
| InChI | InChI=1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 |
| PubChem CID | 10112 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2836500000 |
| Tariff Code | 2836500000 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- 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
- Aeromatt
- Albaglos
- Aragonite
- Calcicoll
- Calcium carbonate (1:1)
- Calofort U
- Calseeds
- Caltrate
- Calwhite
- Carbonic acid calcium salt (1:1)
Frequently asked questions
What is calcium carbonate used for?
Calcium carbonate is commonly used as a filler in plastics, a neutralizing agent in agriculture, and a dietary calcium supplement.
What is the chemical formula and molecular weight of calcium carbonate?
The formula is CaCO3 with a molecular weight of 100.09 g/mol.
How should calcium carbonate be stored?
Store at ambient temperature, away from moisture and direct sunlight.
What grade of calcium carbonate does Molekula supply?
Molekula supplies technical grade calcium carbonate; custom grades available upon request.
Can Molekula supply calcium carbonate in bulk?
Yes, Molekula offers bulk quantities in drums, totes, and bulk bags.
What documentation comes with a calcium carbonate order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
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.