1.02410

Carbonate de calcium

volumetric standard, secondary reference material for complexometry, traceable to NIST Standard Reference Material (SRM) Certipur^® Reag. USP

• Formule linéaire : CaCO₃
• Numéro CAS: 471-34-1
• Poids moléculaire : 100.09
• Numéro Beilstein : 8008338
• Numéro MDL: MFCD00010906
• Code UNSPSC : 41116107
• Numéro de classement CE : 207-439-9

Propriétés

• Agence: ISO 17025; reag. USP
• Niveau de qualité: 300
• Forme: solid
• Puissance: 6450 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rat)
• Technique(s): titration: suitable
• pH: 9.5-10.5 (20 °C, 100 g/L in H₂O, slurry)
• Pf: 825 °C (decomposition)
• Densité: 2.93 g/mL at 25 °C (lit.)
• Masse volumique apparente: 300‑1400 kg/m³
• Température de stockage: 15-25°C
• 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 volumetric standard is manufactured under stringent conditions and measured with the highest possible precision. Its mass fraction is determined by potentiometric titration, and it is qualified in a DIN EN ISO/IEC 17025 accredited laboratory.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It finds its use as a certified reference material (CRM) for the standardization of volumetric solutions in complexometric titrations, according to USP and Ph. Eur.

Caractéristiques et avantages

• Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
• Certified reference material according to ISO 17034
• High-purity material traceable to NIST SRMs
• Qualified in a DIN EN ISO/IEC 17025 accredited laboratory
• In accordance with the chapter reagents of USP and Ph. Eur
• High-quality offering accurate titer determinations
• Accompanied by a certificate of analysis (CoA)

Conditionnement

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Informations légales

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

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