1634-82-8

Name 2-(4-Hydroxyphenylazo)benzoic acid
CAS 1634-82-8
EINECS(EC#) 216-655-2
Molecular Formula C13H10N2O3
MDL Number MFCD00002428
Molecular Weight 242.23
MOL File 1634-82-8.mol
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Chemical Properties

Appearance light yellow to orange powder
Melting point  204-208 °C(lit.)
Boiling point  385.05°C (rough estimate)
density  1.2480 (rough estimate)
refractive index  1.5300 (estimate)
storage temp.  Store below +30°C.
solubility  ethanol: 20 mg/mL, clear
form  powder to crystal
pka 3.40±0.36(Predicted)
color  Light yellow to Brown
Stability: Stable. Incompatible with strong oxidizing agents.
BRN  1842696
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+
InChIKey DWQOTEPNRWVUDA-CCEZHUSRSA-N
SMILES Oc1ccc(cc1)\N=N\c2ccccc2C(O)=O
CAS DataBase Reference 1634-82-8(CAS DataBase Reference)
EPA Substance Registry System Benzoic acid, 2-[(4-hydroxyphenyl)azo]- (1634-82-8)
Absorption ≥2000 at 337nm (mol. absorption)

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
WGK Germany  3
Hazard Note  Irritant
TSCA  Yes
HS Code  29270000
Storage Class 11 - Combustible Solids

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