Molekula
Calcium 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
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
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.
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.