1.02405

Carbonato di sodio

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

• Sinonimo/i: Cenere di soda, Sale disodico dell’acido carbonico, Soda calcinata
• Formula condensata: Na₂CO₃
• Numero CAS: 497-19-8
• Peso molecolare: 105.99
• Beilstein: 4154566
• Numero MDL: MFCD00003494
• Codice UNSPSC: 41116107
• Numero indice EU: 207-838-8
• NACRES: NA.24

Proprietà

• agenzia: ISO 17025; reag. Ph. Eur.; reag. USP
• Livello qualitativo: 300
• Forma fisica: solid
• Potenza: 4090 mg/kg LD₅₀, oral (Rat)
• tecniche: titration: suitable
• pH: 11.16 (25 °C, 4 g/L in H₂O)
• Punto di fusione: 851 °C (lit.)
• Solubilità: 212.5 g/L
• Densità: 2.53 g/cm³ at 20 °C
• Densità bulk: 1100 kg/m³
• Temperatura di conservazione: 15-25°C
• Stringa SMILE: O=C(O[Na])O[Na]
• InChI: 1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2; CDBYLPFSWZWCQE-UHFFFAOYSA-L

Descrizione

Descrizione generale

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.

Applicazioni

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

Azioni biochim/fisiol

Componente tampone, può essere usato per rimuovere le proteine di membrana periferiche.

Caratteristiche e vantaggi

• 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)

Confezionamento

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

Note legali

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

Informazioni sulla sicurezza

• Pittogrammi: GHS07
• Avvertenze: Warning
• Indicazioni di pericolo: H319
• Consigli di prudenza: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Classi di pericolo: Eye Irrit. 2
• Codice della classe di stoccaggio: 13 - Non Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable