Calcium carbonate
CAS Number: 471-34-1
Chemical Formula: CCaO3
Synonyms:
PRECIPITATED CHALK
PARIS WHITE
aeromatt
Appearance: White Powder
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Calcium carbonate CAS#471-34-1 exists naturally in many forms including limestone, marble, chalk and coral. It ranks among the most commonly used raw materials across the chemical industry. Major applications include manufacturing cement, mortars, plasters, refractory materials and glass for construction uses. It is also a key material for producing quicklime, slaked lime and various calcium‑based chemical products. Calcium carbonate is commercially available as ground powder or precipitated calcium carbonate. Precipitated grades feature finer particle size, higher purity and more consistent distribution. Different grades of precipitated calcium carbonate are widely used in textiles, paper, coatings, plastics, adhesives, sealants and cosmetic products.
Parameters
| Property | Value |
| Melting point | 825 °C |
| Boiling point | 800 °C |
| bulk density | 300-1400kg/m3 |
| density | 2.93 g/mL at 25 °C (lit.) |
| refractive index | 1.6583 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | 5 M HCl: 0.1 M at 20 °C, clear, colorless |
| form | random crystals |
| color | White-beige to slightly beige-gray |
| Specific Gravity | 2.93 |
| Flame Color | Red-orange |
| Odor | Odorless |
| PH | 9.91(1 mM solution);9.91(10 mM solution);9.91(100 mM solution); |
| PH Range | 8 |
| Water Solubility | Insoluble |
| λmax | λ: 260 nm Amax: ≤0.09 λ: 280 nm Amax: ≤0.06 |
| Merck | 14,1657 |
| Solubility Product Constant (Ksp) | pKsp: 8.54 |
| BRN | 8008338 |
| Dielectric constant | 6.1（Ambient） |
| Exposure limits | NIOSH: TWA 10 mg/m3; TWA 5 mg/m3 |
| Stability: | Stable. Incompatible with acids, fluorine, ammonium salts, alum. |
| Cosmetics Ingredients Functions | BULKING BUFFERING ABRASIVE ORAL CARE COLORANT OPACIFYING |
| Cosmetic Ingredient Review (CIR) | Calcium carbonate (471-34-1) |
| InChI | 1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 |
| InChIKey | VTYYLEPIZMXCLO-UHFFFAOYSA-L |
| SMILES | [Ca++].[O-]C([O-])=O |
| Modulus of Elasticity | 10.0 – 80.0 GPa |
| Hardness, Knoop | 75 – 120 |
| Hardness, Mohs | 2.0 – 5.0 |
| Hardness, Shore H | 10 – 60 |
| Hardness, Vickers | 105 – 136 |
| Drilling Hardness | 50 |
| CAS DataBase Reference | 471-34-1(CAS DataBase Reference) |
| EPA Substance Registry System | Calcium carbonate (471-34-1) |
Safety Information
| Item | Value |
| Hazard Codes | Xi |
| Risk Statements | 37/38-41-36/38-36 |
| Safety Statements | 26-36/37/39-37/39-37 |
| OEB | B |
| OEL | TWA: 10 mg/m3 (total) |
| WGK Germany | – |
| RTECS | FF9335000 |
| TSCA | TSCA listed |
| HS Code | 28365000 |
| Storage Class | 13 – Non Combustible Solids |
| Hazardous Substances Data | 471-34-1(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 6450 mg/kg LD50 dermal Rat > 2000 mg/kg |
Product Application
Calcium carbonate serves as a gentle abrasive material used for manual polishing of nickel, gold, silver, plated items, buttons and similar surfaces.
Fast delivery time
Inventory 2-3 working days New production 7-10 working days
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