1.06306

Supelco

di-Sodium tetraborate

anhydrous for analysis

Synonym(s):
di-Sodium tetraborate, Borax
Empirical Formula (Hill Notation):
B4Na2O7
CAS Number:
Molecular Weight:
201.22
MDL number:
EC Index Number:
215-540-4

storage conditions

Store at +5°C to +30°C.

vapor pressure

7.3 hPa ( 1200 °C)

Quality Level

assay

≥98.0% (acidimetric)

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

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 %

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