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Merck
CN

31208

Calcium carbonate

puriss. p.a., ≥99%

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About This Item

Linear Formula:
CaCO3
CAS Number:
471-34-1
Molecular Weight:
100.09
EC Number:
207-439-9
UNSPSC Code:
12352300
PubChem Substance ID:
57648513
Beilstein/REAXYS Number:
8008338
MDL number:
MFCD00010906

Key Documents

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InChI key

VTYYLEPIZMXCLO-UHFFFAOYSA-L

InChI

1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2

SMILES string

[Ca++].[O-]C([O-])=O

grade

puriss. p.a.

assay

≥99%

form

powder

impurities

≤0.001% total nitrogen (N), ≤0.005% insoluble in hydrochloric acid

solubility

H2O: insoluble

density

2.93 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

cation traces

Ba: ≤50 mg/kg, Cu: ≤5 mg/kg, Fe: ≤10 mg/kg, K: ≤100 mg/kg, Mg: ≤500 mg/kg, Na: ≤2000 mg/kg, Pb: ≤5 mg/kg, Sr: ≤1000 mg/kg

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General description

Calcium carbonate (CaCO3) exists in three anhydrous crystalline polymorphic forms: trigonal(calcite), rhombic aragonite and hexagonal vaterite. On crystallization from water at low temperatures it affords rhombohedral calcium carbonate hexahydrate. On thermal decomposition it affords CaO and CO2. CaCO3 is a mineral found abundantly in mussel shells, exoskeleton of chorals and algae, the carapace of crayfish and lobsters. Its μm sized crystals have industrial importance.

Application

Calcium carbonate was used in the synthesis of hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles.

Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

Storage Class

13 - Non Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
SZBB0320V
SZBA2510
SZBA2510V
SZBB0320
SZBA1160

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Eagleson M.
Concise Encyclopedia Chemistry, 162-162 (1994)
Denis Gebauer et al.
Nanoscale, 3(9), 3563-3566 (2011-08-19)
Nanocellulose hybrids are promising candidates for biodegradable multifunctional materials. Hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles were obtained through a facile chemical approach over a wide range of compositions. Controlling the interactions between NCC and ACC
Munlika Bootklad et al.
Carbohydrate polymers, 97(2), 315-320 (2013-08-06)
Thermoplastic starch (TPS) was prepared using compression molding and chicken eggshell was used as a filler. The effect of the eggshell powder (EP) on the properties of TPS was compared with the effect of commercial calcium carbonate (CC). The organic
Sophie A Jamal et al.
Lancet (London, England), 382(9900), 1268-1277 (2013-07-23)
Phosphate binders (calcium-based and calcium-free) are recommended to lower serum phosphate and prevent hyperphosphataemia in patients with chronic kidney disease, but their effects on mortality and cardiovascular outcomes are unknown. We aimed to update our meta-analysis on the effect of
M Azizur Rahman et al.
PloS one, 8(3), e58781-e58781 (2013-03-26)
An organic matrix consisting of a protein-polysaccharide complex is generally accepted as an important medium for the calcification process. While the role this "calcified organic matrix" plays in the calcification process has long been appreciated, the complex mixture of proteins
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