Sodium tetraborate decahydrate
SIGALD/B9876 - ReagentPlus®, ≥99.5%
Synonym: Borax decahydrate; Sodium borate decahydrate
CAS Number: 1303-96-4
Empirical Formula (Hill Notation): B4Na2O7 · 10H2O
Molecular Weight: 381.37
EC Number: 215-540-4
MDL Number: MFCD00149193
Linear Formula: Na2B4O7 · 10H2O
Product Type: Chemical
| agency | suitable for SM 4500 - NH3 |
| assay | ≥99.5% |
| density | 1.73 g/mL at 25 °C (lit.) |
| form | powder |
| InChI | 1S/B4O7.2Na.10H2O/c5-1-7- |
| InChI key | CDMADVZSLOHIFP-UHFFFAOYSA |
| pH | 9.2 (10 g/L) |
| product line | ReagentPlus® |
| Quality Level | 200 ![]() |
| SMILES string | O.O.O.O.O.O.O.O.O.O.[Na+] |
| storage temp. | room temp |
| Application: | Sodium tetraborate decahydrate is widely used to prepare buffer solution with a pH range approx 9.3. It can also be used as: • A component of a buffer solution used in the separation and estimation of thiamin and its phosphate esters in commercial tablets. • A fluxing agent in the preparation of ceramizable silicone rubber-derived composite materials. • A crosslinking agent in the synthesis of porous foams by reacting cellulose nanofibres with poly-vinyl alcohol. |
| Legal Information: | ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany |
| Packaging: | 1 kg in poly bottle |
| Packaging: | 5 kg in poly drum |
| Packaging: | 500 g in poly 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 | ≥99.5% |
| Density | 1.73 g/mL at 25 °C (lit.) |
| Storage Temp. | room temp |
| UNSPSC | 12352302 |



