1.06306

di-Sodium tetraborate

anhydrous for analysis

• Synonym(s): di-Sodium tetraborate, Borax
• Empirical Formula (Hill Notation): B₄Na₂O₇
• CAS Number: 1330-43-4
• Molecular Weight: 201.22
• MDL number: MFCD00081185
• UNSPSC Code: 12352302
• EC Index Number: 215-540-4
• NACRES: NB.21

Properties

• grade: for X-ray fluorescence analysis
• Quality Level: 100
• vapor pressure: 7.3 hPa ( 1200 °C)
• assay: ≥98.0% (acidimetric)
• form: powder
• potency: >2000 mg/kg LD₅₀, skin (Rabbit)
• pH: 9.2 (20 °C, 25 g/L in H₂O)
• mp: 742 °C
• solubility: 25.6 g/L
• density: 2.37 g/cm³ at 20 °C
• bulk density: 700 kg/m³
• anion traces: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤0.002%; sulfate (SO₄^2-): ≤0.005%
• cation traces: heavy metals (as Pb): ≤0.002%
• storage temp.: 2-30°C
• InChI: 1S/4B.2Na.7H2O.7O/h;;;;;;7*1H2;;;;;;;/q4*+3;2*+1;;;;;;;;7*-2
• InChI key: HJIQVKXMQOLFFS-UHFFFAOYSA-N

Description

Analysis Note

Assay (acidimetric): ≥ 98.0 %
Chloride (Cl): ≤ 0.001 %
Phosphate (PO₄): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.002 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.001 %

Safety Information

• pictograms: GHS07,GHS08
• 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