398101

Calciumcarbonat

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

• Lineare Formel: CaCO₃
• CAS-Nummer: 471-34-1
• Molekulargewicht: 100.09
• Beilstein: 8008338
• EG-Nummer: 207-439-9
• MDL-Nummer: MFCD00010906
• UNSPSC-Code: 12352300
• PubChem Substanz-ID: 24864718
• NACRES: NA.21

Eigenschaften

• Qualität: ACS reagent; chelometric standard
• Qualitätsniveau: 200
• Assay: 99.95-100.05% dry basis
• Form: powder
• Verunreinigungen: ≤0.01% NH₄OH pptd.; ≤0.01% insol. dil. HCl
• pH-Wert: 8
• Löslichkeit: dilute HCl: 6.7%
• Dichte: 2.93 g/mL at 25 °C (lit.)
• Anionenspuren: chloride (Cl^-): ≤0.001%; fluoride (F^-): ≤0.0015%; sulfate (SO₄^2-): ≤0.005%
• Kationenspuren: 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
• InChIKey: VTYYLEPIZMXCLO-UHFFFAOYSA-L

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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).

Sicherheitshinweise

• Lagerklassenschlüssel: 13 - Non Combustible Solids
• WGK: nwg
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves