p-Aminoazobenzene p-Aminoazobenzene
Structural formula
| Business number | 01AY |
|---|---|
| Molecular formula | C12H11N3 |
| Molecular weight | 197.24 |
| label |
4-Aminoazobenzene, Aniline yellow, Oil-soluble yellow B, Aniline is dissolved in alcohol, 4-Phenylazoaniline, 4-(Phenylazo)aniline, p-Aminoazobenzene, Aniline yellow, Aniline yellow alcohol soluble, Oil yellow B, Spirit yellow |
Numbering system
CAS number:60-09-3
MDL number:MFCD00007854
EINECS number:200-453-6
RTECS number:BY8225000
BRN number:1913042
PubChem number:24869842
Physical property data
1. Properties: light yellow or brown crystal with light blue luster.
2. Density (g/mL, 25/4℃): 1.28
3. Relative vapor density (g/mL, air=1): Undetermined
4. Melting point (ºC): 123-126
5. Boiling point (ºC, normal pressure): 360
6. Boiling point (ºC, 5.2kPa): Undetermined
7. Refractive index: Undetermined
8. Flash point (ºC): Undetermined
9. Specific rotation (º): Undetermined
10. Autoignition point or ignition temperature (ºC): Undetermined
11. Vapor pressure (kPa, 25ºC): Undetermined
12. Saturated vapor Pressure (kPa, 60ºC): Undetermined
13. Heat of combustion (KJ/mol): Undetermined
14. Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
16. Log value of oil-water (octanol/water) partition coefficient: Undetermined
17. Explosion upper limit (%, V/V): Undetermined
18. Lower explosion limit (%, V/V): Undetermined
19. Solubility: Easily soluble in ethanol, benzene, chloroform and ether , slightly soluble in water. Insoluble in cold water.
Toxicological data
None yet
Ecological data
None yet
Molecular structure data
1. Molar refractive index: 60.77
2. Molar volume (cm3/mol): 174.9
3. Isotonic specific volume (90.2K ): 454.7
4. Surface tension (dyne/cm): 45.6
5.Polarizability (10-24cm3): 24.09
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): 3.4
2. Number of hydrogen bond donors: 1
3. Number of hydrogen bond acceptors: 3
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4. Number of rotatable chemical bonds: 2
5. Number of tautomers: 2
6. Topological molecular polar surface area (TPSA): 50.7
7. Number of heavy atoms: 15
8. Surface charge: 0
9. Complexity: 201
10. Isotopic atoms Quantity: 0
11. Determine the number of atomic stereocenters: 0
12. Uncertain number of atomic stereocenters: 0
13. Determine the chemical bond positions Number of stereocenters: 0
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
1. May cause cancer.
Storage method
Store in a sealed, cool, dry and away from light.
Synthesis method
Starting from aniline, it is diazotized and then condensed with aniline through translocation rearrangement. Pour aniline and sodium nitrite solution into the reaction pot, stir at 30-40°C, add 30% hydrochloric acid within 2.5-3h, and then raise the temperature to 50-55°C for transposition.
Purpose
1. Determination of nitrite. Non-aqueous acid-base indicator for titration. Organic Synthesis. Dye intermediates. Used in the synthesis of azo dyes, disperse dyes, oxazine dyes, paints and pigments, as well as alcohol-soluble yellow and pH indicators.
