Calcium carbonate, 500g, ACS reagent, powder

SKU:
239216-500G
  • $154.00

    • Description

    Calcium carbonate, 500g,

    ACS reagent, ≥99.0%, powder

    About This Item

    Linear Formula:
    CaCO3
    CAS Number:
    471-34-1
    Molecular Weight:
    100.09
    Beilstein/REAXYS Number:
    8008338
    EC Number:
    207-439-9
    MDL number:
    MFCD00010906
    UNSPSC Code:
    12352300
    PubChem Substance ID:
    329752519
    NACRES:
    NA.21

    Properties

    grade

    ACS reagent

    Quality Level

    200

    assay

    ≥99.0%

    form

    powder

    impurities

    ≤0.002 meq/g water-soluble titr. base
    ≤0.005% oxidizers
    ≤0.01% NH4OH pptd.
    ≤0.01% insol. dil. HCl

    pH

    8

    density

    2.93 g/mL at 25 °C (lit.)

    anion traces

    chloride (Cl-): ≤0.001%
    fluoride (F-): ≤0.0015%
    sulfate (SO42-): ≤0.01%

    cation traces

    Ba: ≤0.005%
    Fe: ≤0.003%
    K: ≤0.01%
    Mg: ≤0.02%
    NH4+: ≤0.003%
    Na: ≤0.1%
    Sr: ≤0.1%
    heavy metals: ≤0.001% (by ICP-OES)

    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

    General description

    CaCO3 occurs naturally as the principal constituent of limestone, marble, and chalk, which can be prepared by the precipitation from dissolved calcium hydroxide and carbon dioxide.

    Application

    Calcium carbonate can be used as a precursor to prepare Pd/CaCO3, which can be used as a catalyst:
    • In Miyaura-Suzuki cross-coupling reactions.
    • In the ligand-free Stille cross-coupling reaction between aryl halides and tributylphenyltin to synthesize biphenyls.
    It can also be used as a base in the Pd-catalyzed regioselective Heck reaction of fluorinated haloaryls with olefins to synthesize substituted olefins.

    Other Notes

    Go to Redi-Dri™ Product Listing 795445

    Legal Information

    Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

    Safety Information

    Storage Class

    11 - Combustible Solids

    wgk_germany

    nwg

    flash_point_f

    Not applicable

    flash_point_c

    Not applicable