All Photos(3)
Synonym(s):
Borax, fused
Linear Formula:
Na2B4O7
CAS Number:
Molecular Weight:
201.22
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.22
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Quality Level
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
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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
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Repr. 1B
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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Borax-Catalyzed and pH-Controlled Selective Oxidation of Organic Sulfides by H2O2: An Environmentally Clean Protocol
Hussain S, et al.
European Journal of Organic Chemistry, 2009(20), 3319-3322 (2009)
Borax-catalyzed thiolysis of 1, 2-epoxides in aqueous medium
Gao P, et al.
Tetrahedron Letters, 49(46), 6536-6538 (2008)
Borax catalyzed domino reactions: synthesis of highly functionalised pyridines, dienes, anilines and dihydropyrano [3, 2-c] chromenes
Molla A and Hussain S
Royal Society of Chemistry Advances, 4(56), 29750-29758 (2014)
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