479624
4-(Phenylazo)benzoic acid
98%
Synonym(s):
4-(2-Phenyldiazenyl)benzoic acid, 4-Carboxyazobenzene, Azobenzene-4-carboxylic acid, Azoic acid, p-Phenylazobenzoic acid
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About This Item
Linear Formula:
C6H5N=NC6H4CO2H
CAS Number:
Molecular Weight:
226.23
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352100
EC Number:
216-347-8
MDL number:
Assay:
98%
Quality Segment
assay
98%
mp
247-250 °C (lit.)
functional group
carboxylic acid
SMILES string
OC(=O)c1ccc(cc1)\N=N\c2ccccc2
InChI
1S/C13H10N2O2/c16-13(17)10-6-8-12(9-7-10)15-14-11-4-2-1-3-5-11/h1-9H,(H,16,17)/b15-14+
InChI key
CSPTZWQFHBVOLO-CCEZHUSRSA-N
General description
4-(Phenylazo)benzoic acid (PABA), an azobenzene derivative, is a photo-isomerisable molecule. It can be synthesized by reacting p-aminobenzoic acid with nitrosobenzene. The interaction of PABA with TiO2 and ZnO electrodes has been investigated. A photoreversible switch has been developed using dimethylamino calix[4]arene and PABA. The post functionalization of poly(hydroxyethyl acrylate) core cross-linked star polymers with PABA induces an ability to complex with α-cyclodextrin.
Application
4-(Phenylazo)benzoic acid may be used in the preparation of a novel photochromic ZrO2 precursor solution.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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