1.02405

Carbonate de sodium

volumetric standard, secondary reference material for acidimetry, traceable to NIST SRM Certipur^®

• Synonyme(s) : Acide carbonique, sel disodique, Carbonate de soude, Soude calcinée
• Formule linéaire : Na₂CO₃
• Numéro CAS: 497-19-8
• Poids moléculaire : 105.99
• Numéro Beilstein : 4154566
• Numéro MDL: MFCD00003494
• Code UNSPSC : 41116107
• Numéro de classement CE : 207-838-8
• Nomenclature NACRES : NA.24

Propriétés

• Agence: ISO 17025; reag. Ph. Eur.; reag. USP
• Niveau de qualité: 300
• Forme: solid
• Puissance: 4090 mg/kg LD₅₀, oral (Rat)
• Technique(s): titration: suitable
• pH: 11.16 (25 °C, 4 g/L in H₂O)
• Pf: 851 °C (lit.)
• Solubilité: 212.5 g/L
• Densité: 2.53 g/cm³ at 20 °C
• Masse volumique apparente: 1100 kg/m³
• Température de stockage: 15-25°C
• Chaîne SMILES: O=C(O[Na])O[Na]
• InChI: 1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
• Clé InChI: CDBYLPFSWZWCQE-UHFFFAOYSA-L

Description

Description générale

Sodium carbonate is a volumetric standard 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 is used as a certified reference material (CRM) for the standardization of volumetric solutions in acidimetric titrations, according to USP and Ph. Eur.

Actions biochimiques/physiologiques

Constituant de tampon pouvant être utilisé pour l′extraction des protéines membranaires périphériques.

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
• Measured 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

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H319
• Conseils de prudence: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Classification des risques: Eye Irrit. 2
• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable