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1.06310

Supelco

di-Sodium tetraborate

for analysis (ca. 85% Na₂B₄O₇)

Synonym(s):

di-Sodium tetraborate, Borax

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About This Item

Empirical Formula (Hill Notation):
B4Na2O7 · nH2O (n=1.5-2)
CAS Number:
UNSPSC Code:
12352302
EC Index Number:
215-540-4
NACRES:
NA.21

vapor pressure

20-°C ( 68 °F)

Quality Level

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

Assay (acidimetric): ≥ 85.0 %
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 %

Pictograms

Exclamation markHealth hazard

Signal Word

Danger

Hazard Statements

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


Certificates of Analysis (COA)

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