229946
Sodium tetraborate
99.998% trace metals basis
Synonym(s):
Borax, fused
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About This Item
Linear Formula:
Na2B4O7
CAS Number:
Molecular Weight:
201.22
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
215-540-4
MDL number:
Assay:
99.998% trace metals basis
Form:
powder
assay
99.998% trace metals basis
form
powder
mp
741 °C (lit.)
density
2.367 g/mL at 25 °C (lit.)
SMILES string
[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2
InChI
1S/B4O7.2Na/c5-1-7-3-9-2(6)10-4(8-1)11-3;;/q-2;2*+1
InChI key
UQGFMSUEHSUPRD-UHFFFAOYSA-N
Application
Sodium tetraborate, also known as borax(Na2B4O7), can be employed as a catalyst:
- In the chemoselective oxidation of alkyl and aryl sulfides to sulfoxides and sulfones using H2O2 as the oxidant.
- In the synthesis of pyridines, dienes, anilines, and dihydropyrano[3,2-c]chromenes via Knoevenagel condensation and Michael addition pathway.
- In thiolysis of 1,2-epoxides to β-hydroxy sulfides.
Legal Information
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signalword
Danger
hcodes
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
ppe
Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
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