Name | p-Hydroxyazobenzene |
Synonyms | CI 11800 C.I. 11800 CI NO 11800 SOLVENT YELLOW 7 P-PHENYLAZOPHENOL 4-PHENYLAZOPHENOL 4-phenylazophenol 4-BENZENEAZOPHENOL 4-HYDROXYAZOBENZENE 4-Hydroxyazobenzene P-HYDROXYAZOBENZENE p-Hydroxyazobenzene C.I. Solvent Yellow 7 4-(phenyldiazenyl)phenol 4-[(E)-phenyldiazenyl]phenol 4-(phenylhydrazono)cyclohexa-2,5-dien-1-one |
CAS | 1689-82-3 |
EINECS | 216-880-6 |
InChI | InChI=1/C12H10N2O/c15-12-8-6-11(7-9-12)14-13-10-4-2-1-3-5-10/h1-9,15H |
Molecular Formula | C12H10N2O |
Molar Mass | 198.22 |
Density | 1.1447 (rough estimate) |
Melting Point | 150-152°C(lit.) |
Boling Point | 230°C/20mmHg(lit.) |
Flash Point | 233.646°C |
Water Solubility | Soluble in acetone, ethanol, benzene and ether. Insoluble in water. |
Solubility | DMSO, Methanol |
Vapor Presure | 0mmHg at 25°C |
Appearance | Orange columnar solid |
Color | Brown |
BRN | 957567 |
pKa | 8.93±0.13(Predicted) |
Storage Condition | 2-8°C |
Refractive Index | 1.6330 (estimate) |
MDL | MFCD00002330 |
Physical and Chemical Properties | Orange columnar solid. Melting point 155-157 °c, boiling point 220-230 °c (2.67kPa). Soluble in alcohol, ether, soluble in dilute alkali solution and concentrated sulfuric acid in yellow, slightly soluble in hot water, insoluble in cold water. |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
UN IDs | 3234 |
WGK Germany | 3 |
RTECS | SM8300000 |
TSCA | Yes |
HS Code | 29270000 |