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398101

Sigma-Aldrich

Calcium carbonate

ACS reagent, chelometric standard, 99.95-100.05% dry basis

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Linear Formula:
CaCO3
CAS Number:
471-34-1
Molecular Weight:
100.09
Beilstein:
8008338
EC Number:
207-439-9
MDL number:
MFCD00010906
UNSPSC Code:
12352300
PubChem Substance ID:
24864718
NACRES:
NA.21

grade

ACS reagent
chelometric standard

Quality Level

200

Assay

99.95-100.05% dry basis

form

powder

impurities

≤0.01% NH4OH pptd.
≤0.01% insol. dil. HCl

pH

8

solubility

dilute HCl: 6.7%

density

2.93 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
fluoride (F-): ≤0.0015%
sulfate (SO42-): ≤0.005%

cation traces

Ba: ≤0.01%
Fe: ≤0.002%
K: ≤0.01%
Mg: ≤0.01%
NH4+: ≤0.003%
Na: ≤0.01%
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

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General description

Calcium carbonate is a calcium salt commonly found in shells and skeleton of marine animals. It is an inexpensive, non-toxic and easily available reagent with a wide range of applications.

Application

Calcium carbonate may be used:
  • As a pore generating agent to prepare porous ceramics.
  • As chelometric standard for the standardization of EDTA solution.
  • To extract aluminium by microwave induced thermal activation of coal fly ash (CFA).

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Calcium carbonate nanoparticles as cancer drug delivery system.
Maleki Dizaj S, et al.
Expert Opinion on Drug Delivery, 12(10) (2015)
Kanwaljit Kaur
Handbook of Water and Wastewater Analysis, 247-248 (2007)
Permeability of porous ceramic based on calcium carbonate as pore generating agent.
Sim?o L, et al.
Ceramics International, 41(3), 4782-4788 (2015)
Opposite particle size effect on amorphous calcium carbonate crystallization in water and during heating in air.
Zou Z, et al.
Chemistry of Materials, 27(12), 4237-4246 (2015)
Aluminum release from microwave-assisted reaction of coal fly ash with calcium carbonate.
Zhang ZY, et al.
Fuel Processing Technology, 134, 303-309 (2015)
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