Skip to Content
Merck
CN

1.06306

di-Sodium tetraborate

for X-ray fluorescence analysis, anhydrous for analysis

Synonym(s):

di-Sodium tetraborate, Borax

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

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:
≥98.0% (acidimetric)
Form:
powder
Solubility:
25.6 g/L
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist


vapor pressure

7.3 hPa ( 1200 °C)

Quality Segment

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 (PO43-): ≤0.002%, sulfate (SO42-): ≤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

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 %


Still not finding the right product?

Explore all of our products under di-Sodium tetraborate


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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library