239216
Calcium carbonate
ACS reagent, ≥99.0%, powder
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About This Item
Linear Formula:
CaCO3
CAS Number:
Molecular Weight:
100.09
UNSPSC Code:
12352300
NACRES:
NA.21
PubChem Substance ID:
EC Number:
207-439-9
Beilstein/REAXYS Number:
8008338
MDL number:
Assay:
≥99.0%
Grade:
ACS reagent
Form:
powder
grade
ACS reagent
Quality Segment
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)
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
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.
Other Notes
Legal Information
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
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Storage Class
11 - Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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