Calcium Carbonate Microparticles

• CAS: 471-34-1
• Catalog Number: ACM471341
• Category: Powders
• Molecular Weight: 100.09
• Molecular Formula: CaCO3;CaCO3;CaCO3;CCaO3
• Description: Calcium carbonate appears as white, odorless powder or colorless crystals. Practically insoluble in water. Occurs extensive in rocks world-wide. Ground calcium carbonate (CAS: 1317-65-3) results directly from the mining of limestone. The extraction process keeps the carbonate very close to its original state of purity and delivers a finely ground product either in dry or slurry form. Precipitated calcium carbonate (CAS: 471-34-1) is produced industrially by the decomposition of limestone to calcium oxide followed by subsequent recarbonization or as a by-product of the Solvay process (which is used to make sodium carbonate). Precipitated calcium carbonate is purer than ground calcium carbonate and has different (and tailorable) handling properties.;Limestone is an odorless, white to tan powder.;Limestone (calcium carbonate) that has been recrystallized by metamorphism and is capable of taking a polish. Practically insoluble in water.;DryPowder; DryPowder, Liquid; DryPowder, OtherSolid; Liquid; OtherSolid; PelletsLargeCrystals; WetSolid; WetSolid, Liquid; WetSolid, OtherSolid;DryPowder; DryPowder, Liquid; DryPowder, OtherSolid; DryPowder, PelletsLargeCrystals; DryPowder, PelletsLargeCrystals, Liquid; DryPowder, WetSolid; Liquid; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals; WetSolid; WetSolid, Liquid; WetSolid, OtherSolid;White crystalline or amorphous, odourless and tasteless powder;WHITE POWDER OR PELLETS.;White, odorless powder or colorless crystals. Calcium carbonate is soluble in concentrated mineral acids.;White, odorless powder or colorless crystals.;Limestone (calcium carbonate) that has been recrystallized by metamorphism and is capable of taking a polish. Practically insoluble in water.;White, odorless powder or colorless crystals.;Odorless, white to tan powder.;Odorless, white powder.
• Synonyms: Carbonic acid calcium salt (1:1), Calcium monocarbonate, Monocalcium carbonate, aragonite
• IUPAC Name: calcium; carbonate
• Canonical SMILES: C(=O)([O-])[O-].[Ca+2]
• InChI: InChI=1S/CH₂O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
• InChI Key: VTYYLEPIZMXCLO-UHFFFAOYSA-L
• Boiling Point: Decomposes (NIOSH, 2016);Decomposes (NIOSH, 2016);Decomposes (NIOSH, 2016);Decomposes;Decomposes;Decomposes;Decomposes;Decomposes
• Melting Point: 1517 to 2442 °F (Decomposes) (NIOSH, 2016);1517 to 2442 °F (Decomposes) (NIOSH, 2016);1517 to 2442 °F (Decomposes) (NIOSH, 2016);Mp 1339 ° (at 1.35 atm);1517-2442°F (decomposes);1517-2442°F (decomposes);1517-2442°F;1517-2442°F (Decomposes);1517-2442°F (Decomposes);1517-2442°F (Decomposes)
• Density: 2.7 to 2.95 (NIOSH, 2016);2.7 to 2.9 (NIOSH, 2016);2.7 to 2.9 (NIOSH, 2016);2.8 g/cm³;2.7-2.95;2.7-2.95;2.7-2.9;2.7-2.95;2.7-2.9;2.7-2.9
• Solubility: 0.001 % (NIOSH, 2016);0.001 % (NIOSH, 2016);0.001 % (NIOSH, 2016);Practically insoluble in water and in alcohol. Dissolves with effervescence in diluted acetic acid, in diluted hydrochloric acid and in diluted nitric acid, and the resulting solutions, after boiling, give positive tests for calcium.;ALKALI HYDROXIDE REDUCES ITS SOLUBILITY;INSOL IN ALCOHOL;SOLUBILITY IN H₂O INCR BY AMMONIUM SALT & BY CO2;Practically insoluble in water; soluble in dilute acids;In water, 0.0013/100 g H20 at 18 °C /Calcite/;In water, 0.0019/100 g H20 at 18 °C /Aragonite/;Solubility in water, mg/l at 25 °C: 14 (very poor);0.001%;0.001%;0.001%
• Appearance: White powder
• Color/Form: White hexagonal crystals or powder (Calcite); white orthrombic crystals or powder (Argonite); colorless hexagonal crystals (vaterite)
• Complexity: 18.8
• Corrosivity: Non-corrosive
• Covalently-Bonded Unit Count: 2
• Decomposition: When heated to decomposition it emits acrid smoke and irritating vapors.;At about 825 °C it decomposes into calcium oxide and carbon dioxide;825 °C
• EC Number: 207-439-9
• Exact Mass: 99.947335g/mol
• Formal Charge: 0
• H-Bond Acceptor: 3
• H-Bond Donor: 0
• Heavy Atom Count: 5
• ICSC Number: 1193
• MDL Number: MFCD00010906
• Monoisotopic Mass: 99.947335g/mol
• Morphology: spherical, rough
• Odor: Odorless
• Other Experimental: Bulk density: 40-100 lb/cubic ft; screen analysis: usually 200 to 325 mesh;Very flowable ... surface treated with fatty acids, hydrophobic;Enthalpy of Fusion: 36 kJ/mol at 800 °C (calcite);Incompatibilities: acids, alum, ammonium salts.;Solubility Product constant: 3.36X10-9 at 25 °C;White microcrystalline powder; mw: 100.09; mp: 825 °C (alpha), 1339 °C (beta) at 102.5 atm; density: 2.7-2.95. Odorless, tasteless powder or crystals. /Limestone/;Aragonite is metastable and irreversibly changes to calcite when heated in dry air to about 400 °C. Vaterite is metastable to calcite and aragonite under geological conditions but is found during high temperature precipitation of calcium carbonate.;MP: 1339 °C (102.5 atm); density: 2.7111 at 25.2 °C; formed at temperatures below 30 °C /Calcite/;White hexagonal crystals or powder. Decomposes at 700 to 900 °C. Density: 2.710 g/cu cm. Solubility: 6.6X10-4 g/100 g water at 20 °C; Soluble in dilute acid /Calcite/;Mohs hardness: 3.0 (Calcite); 3.5-4.0 (Argonite);White orthorhombic crystals or powder; MP: trans calcite, 450 °C; density: 2.930 g/cu cm; solubility: 6.6X10-4 g/100 g water at 20 °C; soluble in dilute acid /Argonite/;MP: 825 °C (decomposes); Density: 2.83; Formed at temp above 30 °C /Aragonite/;Colorless hexagonal crystals; density: 2.653 g/cu cm; solubility: 1.1X10-3 g/100 g water at 20 °C; soluble in dilute acid /Vaterite/
• Particle Size: 6 μm
• Refractive Index: Index of Refraction: 1.7216 (300 nm); 1.6584 (589 nm); 1.6503 (750 nm) /Calcite/;Index of refraction: 1.5145 (300 nm); 1.4864 (589 nm); 1.4828 (750 nm) /Aragonite/
• Rotatable Bond Count: 0
• RTECS Number: EV9580000;FF9335000
• Size Range: 3-6 μm
• Specific Surface Area: > 18 m2/g
• Stability: Indefinite shelflife.;STABLE IN AIR
• UNII: H0G9379FGK
• Vapor Pressure: 0 mm Hg (approx) (NIOSH, 2016);0 mm Hg (approx) (NIOSH, 2016);0 mm Hg (approx) (NIOSH, 2016);0 mmHg (approx);0 mmHg (approx);approx 0 mmHg;0 mmHg (approx);0 mmHg (approx);0 mmHg (approx)

Custom Q&A

What is the molecular formula of calcium carbonate?

The molecular formula of calcium carbonate is CaCO3.

What is the molecular weight of calcium carbonate?

The molecular weight of calcium carbonate is 100.09 g/mol.

What is the role of calcium carbonate?

Calcium carbonate has various roles, including being an antacid, a food colouring, a food firming agent, and a fertilizer.

Is calcium carbonate soluble in water?

Calcium carbonate is practically insoluble in water.

How is ground calcium carbonate obtained?

Ground calcium carbonate is obtained directly from the mining of limestone.

What is the process used to produce precipitated calcium carbonate?

Precipitated calcium carbonate is produced by the decomposition of limestone to calcium oxide followed by subsequent recarbonization or as a by-product of the Solvay process.

How does calcium carbonate act as an antacid?

Calcium carbonate acts as an antacid by neutralizing hydrochloric acid in gastric secretions.

Can calcium carbonate be used as a nutritional supplement?

Yes, calcium carbonate can be used as a nutritional supplement.

What are some synonyms of calcium carbonate?

Some synonyms of calcium carbonate are aragonite, limestone, and calcite.

Are there any other identifiers for calcium carbonate?

Yes, calcium carbonate has various other identifiers, including CAS numbers 471-34-1 and 13397-26-7.