B9876

Sodium tetraborate decahydrate

ReagentPlus^®, ≥99.5%

• Synonym(s): Borax decahydrate, Sodium borate decahydrate
• Linear Formula: Na₂B₄O₇ · 10H₂O
• CAS Number: 1303-96-4
• Molecular Weight: 381.37
• EC Number: 215-540-4
• MDL number: MFCD00149193
• UNSPSC Code: 12352302
• PubChem Substance ID: 329773325
• NACRES: NA.21

Properties

• agency: suitable for SM 4500 - NH3
• product line: ReagentPlus^®
• assay: ≥99.5%
• form: powder
• pH: 9.2 (10 g/L)
• density: 1.73 g/mL at 25 °C (lit.)
• storage temp.: room temp
• SMILES string: O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2
• InChI: 1S/B4O7.2Na.10H2O/c5-1-7-3-9-2(6)10-4(8-1)11-3;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;
• InChI key: CDMADVZSLOHIFP-UHFFFAOYSA-N

Description

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

Safety Information

• pictograms: GHS08,GHS07
• signalword: Danger
• hcodes: H319,H360FD
• pcodes: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Hazard Classifications: Eye Irrit. 2 - Repr. 1B
• Storage Class: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable