795445

Carbonate de calcium

anhydrous, free-flowing, Redi-Dri^™, ACS reagent, ≥99%

• Formule linéaire : CaCO₃
• Numéro CAS: 471-34-1
• Poids moléculaire : 100.09
• Numéro Beilstein : 8008338
• Numéro CE : 207-439-9
• Numéro MDL: MFCD00010906
• Code UNSPSC : 12352300
• ID de substance PubChem : 329768485
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent; anhydrous; free-flowing
• Niveau de qualité: 200
• Gamme de produits: Redi-Dri^™
• Pureté: ≥99%
• Forme: powder
• Impuretés: ≤0.002 meq/g water-soluble titr. base; ≤0.005% oxidizers; ≤0.01% NH₄OH pptd.; ≤0.01% insol. dil. HCl
• pH: 8
• Solubilité: H₂O: insoluble
• Densité: 2.93 g/mL at 25 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤0.001%; fluoride (F^-): ≤0.0015%; sulfate (SO₄^2-): ≤0.01%
• Traces de cations: Ba: ≤0.005%; Fe: ≤0.003%; K: ≤0.01%; Mg: ≤0.02%; NH₄⁺: ≤0.003%; Na: ≤0.1%; Sr: ≤0.1%; heavy metals: ≤0.001% (by ICP-OES)
• Chaîne SMILES: [Ca++].[O-]C([O-])=O
• InChI: 1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
• Clé InChI: VTYYLEPIZMXCLO-UHFFFAOYSA-L

Description

Description générale

Calcium carbonate is an inorganic compound that is commonly used as a solid base catalyst in some organic transformations. It is also used as an acid scavenger and stabilizing agent for acid-sensitive compounds. Additionally, CaCO₃ is the most widely used additive in plastic and elastomeric applications due to its wide availability.

Application

• Spectrophotometric Analysis: Chromotropic acid disodium salt dihydrate is used in spectrophotometric methods for detecting and quantifying metal ions. Studies have shown its effectiveness in forming stable complexes with metal ions such as thorium, which can then be analyzed spectrophotometrically. This application is essential for environmental and industrial monitoring of metal contaminants (Issa et al., International Journal of Pharmaceutical Sciences Review and Research, 2022).

Caractéristiques et avantages

• Increased efficiency – Eliminates time and effort of loosening hardened powders     
• Safety – Eliminates tools of force used to break up clumps
• Ecology – Reduces waste as it does not stick to the packaging
• Economy – Faster preparation and solvation increase productivity and reduce costs     
• Assured Quality – Excellent, expert-tested quality with no anti-caking agents      
• Flexible volumes – Available from research amounts to scale-up quantities

Informations légales

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): nwg
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable