CX0120

Calcium carbonate

• Synonym(s): Carbonic Acid Calcium Salt
• Linear Formula: CaCO₃
• CAS Number: 471-34-1
• Molecular Weight: 100.09
• Beilstein/REAXYS Number: 8008338
• MDL number: MFCD00010906
• UNSPSC Code: 12352302
• EC Index Number: 207-439-9

Properties

• assay: 98-100.5% dry basis
• Quality Level: 200
• form: powder
• impurities: ≤0.2% Acid-insoluble substances
• loss: ≤2% loss on drying
• color: white
• pH: 9.5-10.5 (20 °C, 100 g/L in H₂O, slurry)
• mp: 825 °C (decomposition)
• solubility: 0.017 g/L
• density: 2.93 g/mL at 25 °C (lit.)
• cation traces: Ba:, passes test; heavy metals (as Pb): ≤0.003%; magnesium and alkali salts (as sulfates): ≤1.0%
• shipped in: ambient
• storage temp.: room temp
• SMILES string: [Ca++].[O-]C([O-])=O
• InChI: 1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
• InChI key: VTYYLEPIZMXCLO-UHFFFAOYSA-L

Description

Analysis Note

Acid-insoluble substances: 0.2% max
Assay (dried): 98-100.5%
Barium (Ba): To pass test
Color: White
Description: To pass test
Form: Powder
Heavy metals (as Pb): 0.003% max
Identification: To pass test
Loss on drying: 2.0% max
Magnesium and alkali salts: 1.0% max
Solubility: To pass test

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable