structural formula
| business number | 0246 |
|---|---|
| molecular formula | c12h14n4 |
| molecular weight | 214.27 |
| label |
3,3′,4,4′-diphenyltetramine, 3,3′,4,4′-tetraaminobiphenyl, 3,3′,4,4′-biphenyltetramine, 3,3′,4,4′-tetraaminobiphenyl, dab, (nh2)2c6h3c6h3(nh2)2 |
numbering system
cas number:91-95-2
mdl number:mfcd00007725
einecs number:202-110-6
rtecs number:dv8750000
brn number:1212988
pubchem number:24894175
physical property data
1. properties: gray to yellow-brown flaky crystals or crystalline powder. the color gradually darkens in the air.
2. density (g/ml, 25/4℃): undetermined
3. relative vapor density (g/ml, air=1): undetermined
4. melting point (ºc): 176-180
5. boiling point (ºc, normal pressure): undetermined
6. boiling point (ºc, 5.2kpa): undetermined
7. refractive index: undetermined
8. flash point (ºc): undetermined
9. specific rotation (º): undetermined determined
10. autoignition point or ignition temperature (ºc): not determined
11. vapor pressure (kpa, 25ºc): not determined
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: soluble in hot water and hot ethanol.
toxicological data
none yet
ecological data
none yet
molecular structure data
1. molar refractive index: 67.78
2. molar volume (cm3/mol): 163.8
3. isotonic specific volume (90.2k ): 483.9
4. surface tension (dyne/cm): 76.1
5. polarizability (10-24cm3): 26.87
compute chemical data
1. reference value for hydrophobic parameter calculation (xlogp): none
2. number of hydrogen bond donors: 4
3. number of hydrogen bond acceptors: 4
4. number of rotatable chemical bonds: 1
5. number of tautomers: none
6. extension�molecular polar surface area 104
7. number of heavy atoms: 16
8. surface charge: 0
9. complexity: 209
10. number of isotope atoms: 0
11. number of determined atomic stereocenters: 0
12. number of uncertain atomic stereocenters: 0
13. determine the number of stereocenters of chemical bonds: 0
14. uncertain number of stereocenters of chemical bonds: 0
15. number of covalent bond units: 1
properties and stability
none yet
storage method
this product should be stored in a sealed, cool place and away from light.
synthesis method
(1) 3,3`-dichlorobenzidine is used as raw material and reacts with ammonia under the action of copper catalyst; (2) benzidine is used as raw material and reacts with acetic acid to generate biphenyl diethylamide, which is then reacted with nitric acid the reaction generates 3,3`-dinitrobiphenyl diethylamide, which is hydrolyzed in a sulfuric acid aqueous solution to generate 3,3`-dinitrobenzidine, which is finally reduced with sodium sulfide or reduced by catalytic hydrogenation.
purpose
react and polymerize with aromatic dicarboxylic acid to generate polycyclic polymer polybenzimidazole; react with aromatic dicarboxylic anhydride to generate ladder polymer polybenzimidazole pyrrolidone, etc.
