Sodium tetraborate
ALDRICH/229946 - 99.998% trace metals basis
Synonym: Borax, fused
CAS Number: 1330-43-4
Empirical Formula (Hill Notation): B4Na2O7
Molecular Weight: 201.22
EC Number: 215-540-4
MDL Number: MFCD00081185
Linear Formula: Na2B4O7
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 229946-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 229946-25G
| assay | 99.998% trace metals basis |
| density | 2.367 g/mL at 25 °C (lit.) |
| form | powder |
| InChI | 1S/B4O7.2Na/c5-1-7-3-9-2( |
| InChI key | UQGFMSUEHSUPRD-UHFFFAOYSA |
| mp | 741 °C (lit.) |
| Quality Level | 100  |
| SMILES string | [Na+].[Na+].[O-]B1Ob2ob([ |
| Application: | Sodium tetraborate, also known as borax(Na2B4O7), can be employed as a catalyst: • In the chemoselective oxidation of alkyl and aryl sulfides to sulfoxides and sulfones using H2O2 as the oxidant. • In the synthesis of pyridines, dienes, anilines, and dihydropyrano[3,2-c]chromenes via Knoevenagel condensation and Michael addition pathway. • In thiolysis of 1,2-epoxides to β-hydroxy sulfides. |
| Packaging: | 5, 25, 100 g in glass bottle |
| Symbol |   GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H319 - H360FD |
| Precautionary statements | P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313 |
| Hazard Codes | T |
| Risk Statements | 60-61 |
| Safety Statements | 53-45 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 99.998% trace metals basis |
| mp | 741 °C (lit.) |
| Density | 2.367 g/mL at 25 °C (lit.) |
| UNSPSC | 12352302 |