1.06309

di-Sodium tetraborate

anhydrous 99.99 Suprapur^®

• 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 inorganic trace analysis
• Quality Level: 100
• vapor pressure: 7.3 hPa ( 1200 °C)
• assay: 99.99%
• 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
• 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

Purity (metallic): ≥ 99.99 %
Assay (acidimetric): ≥ 99 %
Chloride (Cl): ≤ 5 ppm
Phosphate (PO₄): ≤ 5 ppm
Silicate (SiO₂): ≤ 5 ppm
Sulfate (SO₄): ≤ 50 ppm
Ba (Barium): ≤ 10.0 ppm
Ca (Calcium): ≤ 5.0 ppm
Cd (Cadmium): ≤ 0.050 ppm
Ce (Cerium): ≤ 0.05 ppm
Co (Cobalt): ≤ 0.100 ppm
Cr (Chromium): ≤ 0.05 ppm
Cu (Copper): ≤ 0.10 ppm
Eu (Europium): ≤ 0.05 ppm
Fe (Iron): ≤ 0.10 ppm
K (Potassium): ≤ 50 ppm
La (Lanthanum): ≤ 0.05 ppm
Li (Lithium): ≤ 5.0 ppm
Mg (Magnesium): ≤ 0.10 ppm
Mn (Manganese): ≤ 0.050 ppm
Ni (Nickel): ≤ 0.05 ppm
Pb (Lead): ≤ 0.05 ppm
Rb (Rubidium): ≤ 5 ppm
Sc (Scandium): ≤ 0.05 ppm
Sm (Samarium): ≤ 0.05 ppm
Sr (Strontium): ≤ 5.00 ppm
Tl (Thallium): ≤ 0.05 ppm
Y (Yttrium): ≤ 0.05 ppm
Yb (Ytterbium): ≤ 0.050 ppm
Zn (Zinc): ≤ 0.05 ppm

Legal Information

SUPRAPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

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