1.02407

di-Sodium oxalate

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

• Synonym(s): di-Sodium oxalate, Oxalic acid sodium salt
• Empirical Formula (Hill Notation): C₂Na₂O₄
• CAS Number: 62-76-0
• Molecular Weight: 134.00
• MDL number: MFCD00012465
• UNSPSC Code: 41116107
• EC Index Number: 200-550-3

Properties

• Agency: ISO 17025; reag. USP
• Quality Level: 300
• form: solid
• potency: 375 mg/kg LD₅₀, oral (Rat)
• technique(s): titration: suitable
• pH: 8 (20 °C, 30 g/L in H₂O)
• mp: 250-270 °C (decomposition)
• density: 2.27 g/cm³ at 20 °C
• bulk density: 600 kg/m³
• storage temp.: 15-25°C
• InChI: 1S/C2H2O4.2Na/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2*+1/p-2
• InChI key: ZNCPFRVNHGOPAG-UHFFFAOYSA-L

Description

General description

Di-sodium oxalate 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 titer determinations in redox titrations, according to reagents chapters of USP and Ph. Eur.

Features and Benefits

• 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 standard reference materials
• 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)

Packaging

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

Legal Information

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

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302 + H312
• Precautionary Statements: P264 - P280 - P301 + P312 - P302 + P352 + P312 - P362 + P364 - P501
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Oral
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable