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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:
Molecular Weight:
100.09
Beilstein:
8008338
EC Number:
MDL number:
PubChem Substance ID:

grade

ACS reagent
chelometric standard

Quality Level

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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1 of 4

This Item
C6763239216900500
Calcium carbonate ACS reagent, chelometric standard, 99.95-100.05% dry basis

Sigma-Aldrich

398101

Calcium carbonate

-
Calcium carbonate ReagentPlus®

Sigma-Aldrich

C6763

Calcium carbonate

-
Calcium carbonate ACS reagent, ≥99.0%, powder

Sigma-Aldrich

239216

Calcium carbonate

Essential Grade
Calcium carbonate anhydrous, free-flowing, Redi-Dri™, ReagentPlus®, ≥99%

Sigma-Aldrich

900500

Calcium carbonate

-
assay

99.95-100.05% dry basis

assay

≥99% (EDTA titration)

assay

≥99.0%

assay

≥99%

form

powder

form

powder

form

powder

form

powder

impurities

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

impurities

-

impurities

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

impurities

-

pH

8

pH

8

pH

8

pH

8

solubility

dilute HCl: 6.7%

solubility

-

solubility

-

solubility

-

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).

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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25G
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MMYOMAG-74K-13

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Permeability of porous ceramic based on calcium carbonate as pore generating agent.
Sim?o L, et al.
Ceramics International, 41(3), 4782-4788 (2015)
Kanwaljit Kaur
Handbook of Water and Wastewater Analysis, 247-248 (2007)
Aluminum release from microwave-assisted reaction of coal fly ash with calcium carbonate.
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Maleki Dizaj S, et al.
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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)

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