398101

Calcium carbonate

ACS reagent, 99.95-100.05% dry basis

• Lineární vzorec: CaCO₃
• Číslo CAS: 471-34-1
• Molekulová hmotnost: 100.09
• UNSPSC Code: 12352300
• NACRES: NA.21
• PubChem Substance ID: 24864718
• EC Number: 207-439-9
• Beilstein/REAXYS Number: 8008338
• MDL number: MFCD00010906
• Assay: 99.95-100.05% dry basis
• Grade: ACS reagent
• Form: powder
• Solubility: dilute HCl: 6.7%

Vlastnosti

• grade: ACS reagent
• Quality Segment: 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 (SO₄^2-): ≤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

Popis

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).

Bezpečnostní informace

• Skladovací třída: 13 - Non Combustible Solids
• wgk: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves