1.06310
di-Sodium tetraborate
for analysis (ca. 85% Na2B4O7)
Synonym(s):
di-Sodium tetraborate, Borax
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About This Item
vapor pressure
20-°C ( 68 °F)
Quality Segment
assay
≥85.0% (acidimetric)
form
solid
pH
9-10 (20 °C, 25 g/L in H2O)
bp
1575 °C/1013 hPa (anhydrous)
mp
742 °C (anhydrous)
solubility
water: Ca. 25 g/L at 20 °C (68 °F)
density
2.35 g/cm3 at 26 °C
bulk density
680 kg/m3
anion traces
chloride (Cl-): ≤0.002%, phosphate (PO43-): ≤0.002%, sulfate (SO42-): ≤0.01%
cation traces
Ca: ≤0.01%, Fe: ≤0.001%, heavy metals (as Pb): ≤0.002%
storage temp.
2-30°C
Application
- Micellar electrokinetic chromatography for separation of a mixture of coptis alkaloids, scute flavonoids, and rhubarb anthraquinones and bianthrones.: This study by Chang and Sun investigates the use of micellar electrokinetic chromatography (MEKC) to separate complex mixtures of bioactive compounds. The research highlights the effectiveness of di-Sodium tetraborate in optimizing the separation process, showcasing its utility in analytical chemistry for the precise analysis of natural products (Chang et al., 2006).
Analysis Note
Chloride (Cl): ≤ 0.002 %
Phosphate (PO₄): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.01 %
Heavy metals (as Pb): ≤ 0.002 %
Ca (Calcium): ≤ 0.01 %
Fe (Iron): ≤ 0.001 %
signalword
Danger
hcodes
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
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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