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Merck
CN

54791

2-(4-Hydroxyphenylazo)benzoic acid

≥98.0% (HPLC/T)

Synonym(s):

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

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About This Item

Linear Formula:
HOC6H4N=NC6H4CO2H
CAS Number:
1634-82-8
Molecular Weight:
242.23
EC Number:
216-655-2
UNSPSC Code:
12352100
PubChem Substance ID:
24878992
Beilstein/REAXYS Number:
1842696
MDL number:
MFCD00002428

Key Documents

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assay

≥98.0% (HPLC/T)

ign. residue

≤0.1%

mp

204-208 °C

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

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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

Other Notes

For the determination of serum albumin according to

wgk

WGK 3

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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New water soluble phenoxy phenyl diazenyl benzoic acid substituted phthalocyanine derivatives: Synthesis, antioxidant activities, atypical aggregation behavior and electronic properties.
Agirtas MS, et al.
Dyes and Pigments, 99(2), 423-431 (2013)
A Metz et al.
Zeitschrift fur klinische Chemie und klinische Biochemie, 13(9), 423-426 (1975-09-01)
In the present study, serum albumin was determined colorimetrically in three animal species and in man with the help of four currently used dye-reagents (protein binding reagents). The results were compared with those obtained from corresponding electrophoretic and biuret determinations
Multifunctional polybenzoxazine nanocomposites containing photoresponsive azobenzene units, catalytic carboxylic acid groups, and pyrene units capable of dispersing carbon nanotubes.
Mohamed MG, et al.
Royal Society of Chemistry Advances, 5(56), 45201-45212 (2015)
The determination of human serum albumin by its specific binding of the anionic dye, 2-(4'-hydroxybenzeneazo)-benzoic acid.
A T Ness et al.
Clinica chimica acta; international journal of clinical chemistry, 12(5), 532-541 (1965-11-01)
Noritaka Kato et al.
The journal of physical chemistry. B, 109(42), 19604-19612 (2006-07-21)
This study reports a homogeneous and competitive fluorescence quenching immunoassay based on gold nanoparticle/polyelectrolyte (Au(NP)/PE) coated latex particles prepared by the layer-by-layer (LbL) technique. First, the resonant energy transfer from a layer of fluorescent PEs to Au(NP) in LbL assembled
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