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1.06306

di-Sodium tetraborate

Name: di-Sodium tetraborate
Brand: MM

for X-ray fluorescence analysis, anhydrous for analysis

Synonym(s):

di-Sodium tetraborate, Borax

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About This Item

Empirical Formula (Hill Notation):

B₄Na₂O₇

CAS Number:

1330-43-4

Molecular Weight:

201.22

UNSPSC Code:

12352302

EC Index Number:

215-540-4

NACRES:

NB.21

MDL number:

MFCD00081185

Assay:

≥98.0% (acidimetric)

Form:

powder

Solubility:

25.6 g/L

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Properties

vapor pressure

7.3 hPa ( 1200 °C)

Quality Level

100

assay

≥98.0% (acidimetric)

form

powder

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

anion traces

chloride (Cl^-): ≤0.001%, phosphate (PO₄^3-): ≤0.002%, sulfate (SO₄^2-): ≤0.005%

cation traces

heavy metals (as Pb): ≤0.002%

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

Description

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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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

WGK 1

flash_point_f

Not applicable

flash_point_c