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  • Calcium Carbonate Microparticles

    Catalog Number
    ACM471341
    CAS Number
    471-34-1
    Product Name
    Calcium Carbonate Microparticles
    Structure
    Category
    Nanopowders
    Synonyms
    Carbonic acid calcium salt (1:1), Calcium monocarbonate, Monocalcium carbonate, aragonite
    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.
    IUPAC Name
    calcium; carbonate
    Molecular Weight
    100.09
    Molecular Formula
    CaCO3;CaCO3;CaCO3;CCaO3
    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)
    Purity
    99%, 99.9%, 99.99%, 99.999%
    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
    EC Number
    207-439-9
    Exact Mass
    99.947335g/mol
    Formal Charge
    0
    Heavy Atom Count
    5
    ICSC Number
    1193
    MDL Number
    MFCD00010906
    MeSH Entry Terms
    Aragonite;Calcite;Calcium Carbonate;Calcium Milk;Carbonate, Calcium;Chalk;Limestone;Marble;Milk of Calcium;Vaterite
    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
    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)
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