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Merck
CN

1.06309

di-Sodium tetraborate

anhydrous 99.99 Suprapur®

Synonym(s):

di-Sodium tetraborate, Borax

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About This Item

Empirical Formula (Hill Notation):
B4Na2O7
CAS Number:
Molecular Weight:
201.22
UNSPSC Code:
12352302
EC Index Number:
215-540-4
NACRES:
NB.21
MDL number:
Assay:
99.99%
Solubility:
25.6 g/L
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vapor pressure

7.3 hPa ( 1200 °C)

Quality Level

description

for inorganic trace analysis

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

SMILES string

[Na+].[Na+].[B+3].[B+3].[B+3].[B+3].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].O.O.O.O.O.O.O

InChI

1S/4B.2Na.7H2O.7O/h;;;;;;7*1H2;;;;;;;/q4*+3;2*+1;;;;;;;;7*-2

InChI key

HJIQVKXMQOLFFS-UHFFFAOYSA-N

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


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pictograms

Exclamation markHealth hazard

signalword

Danger

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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Global Trade Item Number

SKUGTIN
W243728-1KG-K04061837876608
W243701-1KG-K04061837544743
W243728-100G-K04061837876592
97587-1ML04061833325025
W243701-20KG-K04061837544750
W243728-SAMPLE-K04061837876615
W243701-SAMPLE-K04061837544774
W243701-4KG-K04061837544767
112364-500ML04061838699954
112364-100ML04061838699947
97587-5ML04061837240393