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H5126 Sigma-Aldrich

2-(4-Hydroxyphenylazo)benzoic acid

≥95% (HPLC)

Synonym: 2-(4′-Hydroxybenzeneazo)benzoic acid, 4′-Hydroxyazobenzene-2-carboxylic acid, HABA, HBABA

  • CAS Number 1634-82-8

  • Linear Formula HOC6H4N=NC6H4CO2H

  • Molecular Weight 242.23

  •  Beilstein/REAXYS Number 1842696

  •  EC Number 216-655-2

  •  MDL number MFCD00002428

  •  PubChem Substance ID 57654257

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Properties

Related Categories Azo/Diazo Compounds, Building Blocks, Chemical Synthesis, Nitrogen Compounds - Organic Building Blocks, Organic Building Blocks More...
Quality Level   200
assay   ≥95% (HPLC)
mp   204-208 °C (lit.)
solubility   ethanol: 20 mg/mL, clear to hazy, orange to very deep orange
storage temp.   room temp
SMILES string   Oc1ccc(cc1)\N=N\c2ccccc2C(O)=O
InChI   1S/C13H10N2O3/c16-10-7-5-9(6-8-10)14-15-12-4-2-1-3-11(12)13(17)18/h1-8,16H,(H,17,18)/b15-14+
InChI key   DWQOTEPNRWVUDA-CCEZHUSRSA-N

Description

Application

2-(4-Hydroxyphenylazo)benzoic acid may be used in the preparation of:
• 2-((4-(3,4-dicyanophenoxy)phenyl)diazenyl)benzoic acid
• 2,2’-((((4,5-dicyano-1,2-phenylene)bis(oxy))bis(4,1-phenylene))bis(diazene-2,1-diyl)) dibenzoic acid
• a multifunctional benzoxazine monomer

Packaging

1, 5, 25 g in glass bottle

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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