31457

Sodium tetraborate decahydrate

puriss. p.a., ACS reagent, reag. ISO, buffer substance, ≥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: 329753772
• NACRES: NB.24

Properties

• grade: ACS reagent; puriss. p.a.
• Agency: reag. ISO
• Assay: ≥99.5%
• form: powder or crystals
• pH: 9.0-9.6 (20 °C, 5%)
• density: 1.73 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤10 mg/kg; phosphate (PO₄^3-): ≤10 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: As: ≤1 mg/kg; Ca: ≤50 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; Pb: ≤5 mg/kg
• 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 may be used in the following studies:

• Modified carbazole method for the quantitive determination of hexuronic acids.
• Quantitative estimation of aminoglycoside antibiotics (dihydrostreptomycin and streptomycin) by capillary electrophoresis coupled with UV detection.
• To compose the buffer along with cholic acid sodium solution (pH 9.2) for micellar electrokinetic chromatographic (MEKC) quantification of pesticides.

Legal Information

Safety Information

• Pictograms: GHS08,GHS07
• Signal Word: Danger
• Hazard Statements: H319,H360FD
• Precautionary Statements: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Hazard Classifications: Eye Irrit. 2 - Repr. 1B
• Storage Class Code: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable