Sodium carbonate is a high-purity volumetric standard and certified reference material (CRM) used for the standardization of volumetric solutions in acidimetric titrations according to USP and Ph. Eur.
Sodium carbonate Certipur® is a volumetric standard manufactured under stringent conditions and measured with the highest possible precision. Its mass fraction is determined by potentiometric titration in a DIN EN ISO/IEC 17025 accredited laboratory. This secondary reference material is traceable to NIST Standard Reference Materials (SRM) and is intended for use in analytical chemistry for precise titer determination.
Advantages
- Certified reference material according to ISO 17034.
- High-purity material traceable to NIST SRMs.
- Measured in a DIN EN ISO/IEC 17025 accredited laboratory.
- Compliant with the reagent chapters of USP and Ph. Eur.
- Supplied in a secure glass bottle to ensure stability throughout the shelf life.
Technical specifications
| Catalogue number | 1.02405 |
| Product name | Sodium carbonate volumetric standard Certipur® |
| CAS number | 497-19-8 |
| Linear formula | Na2CO3 |
| Molar mass | 105.99 g/mol |
| Quality level | 300 |
| Accreditation | ISO 17034, ISO/IEC 17025 |
| pH value | 11.16 (4 g/l, H2O, 25 °C) |
| Melting point | 851 °C |
| Storage temperature | 15–25 °C |
| Brand | Merck |
