1.06310

Dinatriumtetraborat

for analysis (ca. 85% Na₂B₄O₇)

• Synonym(e): Dinatriumtetraborat, Borax
• Empirische Formel (Hill-System): B₄Na₂O₇ · nH₂O (n=1.5-2)
• CAS-Nummer: 12267-73-1
• UNSPSC-Code: 12352302
• EG-Index-Nummer: 215-540-4

Eigenschaften

• Dampfdruck: 20-°C ( 68 °F)
• Qualitätsniveau: 100
• Assay: ≥85.0% (acidimetric)
• Form: solid
• pH-Wert: 9-10 (20 °C, 25 g/L in H₂O)
• bp: 1575 °C/1013 hPa (anhydrous)
• mp (Schmelzpunkt): 742 °C (anhydrous)
• Löslichkeit: water: Ca. 25 g/L at 20 °C (68 °F)
• Dichte: 2.35 g/cm³ at 26 °C
• Schüttdichte: 680 kg/m³
• Anionenspuren: chloride (Cl^-): ≤0.002%; phosphate (PO₄^3-): ≤0.002%; sulfate (SO₄^2-): ≤0.01%
• Kationenspuren: Ca: ≤0.01%; Fe: ≤0.001%; heavy metals (as Pb): ≤0.002%
• Lagertemp.: 2-30°C

Beschreibung

Anwendung

• 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).

Hinweis zur Analyse

Gehalt (acidimetrisch): ≥ 85,0 %
Chlorid (Cl): ≤ 0,002 %
Phosphat (PO₄): ≤ 0,002 %
Sulfat (SO₄): ≤ 0,01 %
Schwermetalle (als Pb): ≤ 0,002 %
Ca (Calcium): ≤ 0,01 %
Fe (Eisen): ≤ 0,001 %

Sicherheitshinweise

• Piktogramme: GHS07,GHS08
• Signalwort: Danger
• H-Sätze: H319 - H360FD
• P-Sätze: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Gefahreneinstufungen: Eye Irrit. 2 - Repr. 1B
• Lagerklassenschlüssel: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable