4-[4-[4-(4-carboxyphenyl)phenyl]azophenyl]benzoic acid
4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid
CAS: 148-85-6
Molecular Formula: C26H18N2O4
4-[4-[4-(4-carboxyphenyl)phenyl]azophenyl]benzoic acid - Names and Identifiers
| Name | 4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid |
| Synonyms | 4,4'-Bis(4-carboxyphenyl)azobenzene 4',4'''-Azobis-biphenyl-4-carboxylic acid 4',4'''-Azobis-(biphenyl)-4-carboxylic acid 4'',4''''''-Azobis-(4-biphenylcarboxylic acid) 4',4'''-Azobis((1,1'-biphenyl)-4-carboxylic) acid 4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid (1,1'-Biphenyl)-4-carboxylic acid, 4',4'''-azobis- 4-[4-[4-(4-carboxyphenyl)phenyl]azophenyl]benzoic acid 4',4''-(E)-diazene-1,2-diyldibiphenyl-4-carboxylic acid 4-[4-[4-(4-carboxyphenyl)phenyl]diazenylphenyl]benzoic acid (1,1'-Biphenyl)-4-carboxylic acid, 4',4'''-(1,2-diazenediyl)bis- [1,1'-Biphenyl]-4-carboxylic acid, 4',4'''-(1,2-diazenediyl)bis- |
| CAS | 148-85-6 |
| EINECS | 205-727-9 |
| InChI | InChI=1/C26H18N2O4/c29-25(30)21-5-1-17(2-6-21)19-9-13-23(14-10-19)27-28-24-15-11-20(12-16-24)18-3-7-22(8-4-18)26(31)32/h1-16H,(H,29,30)(H,31,32)/b28-27+ |
4-[4-[4-(4-carboxyphenyl)phenyl]azophenyl]benzoic acid - Physico-chemical Properties
| Molecular Formula | C26H18N2O4 |
| Molar Mass | 422.43 |
| Density | 1.25±0.1 g/cm3 (20 ºC 760 Torr) |
| Boling Point | 689.4±55.0 °C(Predicted) |
| Flash Point | 370.8°C |
| Vapor Presure | 5.87E-20mmHg at 25°C |
| pKa | 3.75±0.10(Predicted) |
| Refractive Index | 1.646 |
4-[4-[4-(4-carboxyphenyl)phenyl]azophenyl]benzoic acid - Introduction
4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid, also known as PPD, is an organic compound. Its chemical formula is C16H10N2O8 and its molecular weight is 354.27.
4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid is a red crystal powder, which is insoluble in water at room temperature, however, it can be dissolved in organic solvents such as dimethyl sulfoxide and chloroform. It has good stability and thermal stability in organic solvents.
4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid is widely used in the synthesis of organic photoelectric materials, such as photoconductive materials, organic solar cells, organic fluorescent materials and liquid crystal displays. It can be used as an intermediate of liquid crystal materials to improve the response speed and display effect of liquid crystal displays. In addition, it can also be used to prepare pigments, dyes and plastic additives.
The method of preparing 4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid mainly has two steps. First, 4-aminoaniline is reacted with nitric acid to produce 4-nitroaniline. Then, 4-nitroaniline is reacted with formaldehyde and acetic anhydride, and 4 ',4' "-azobis[[1,1 '-biphenyl]-4-carboxylic] acid product is obtained by reduction and acid hydrolysis.
Regarding safety information, 4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid may cause irritation and sensitive reactions to the human body. Wear protective gloves, protective glasses and protective clothing to avoid direct contact with skin and eyes. At the same time, ensure that the operation is carried out in a well-ventilated place to avoid inhaling its dust. During storage and handling, it should be kept in a dry, sealed container, away from fire and oxidizing agents. If taken by mistake or inhaled by mistake, seek medical attention immediately.
4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid is a red crystal powder, which is insoluble in water at room temperature, however, it can be dissolved in organic solvents such as dimethyl sulfoxide and chloroform. It has good stability and thermal stability in organic solvents.
4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid is widely used in the synthesis of organic photoelectric materials, such as photoconductive materials, organic solar cells, organic fluorescent materials and liquid crystal displays. It can be used as an intermediate of liquid crystal materials to improve the response speed and display effect of liquid crystal displays. In addition, it can also be used to prepare pigments, dyes and plastic additives.
The method of preparing 4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid mainly has two steps. First, 4-aminoaniline is reacted with nitric acid to produce 4-nitroaniline. Then, 4-nitroaniline is reacted with formaldehyde and acetic anhydride, and 4 ',4' "-azobis[[1,1 '-biphenyl]-4-carboxylic] acid product is obtained by reduction and acid hydrolysis.
Regarding safety information, 4 ',4' '-azobis[[1,1'-biphenyl]-4-carboxylic] acid may cause irritation and sensitive reactions to the human body. Wear protective gloves, protective glasses and protective clothing to avoid direct contact with skin and eyes. At the same time, ensure that the operation is carried out in a well-ventilated place to avoid inhaling its dust. During storage and handling, it should be kept in a dry, sealed container, away from fire and oxidizing agents. If taken by mistake or inhaled by mistake, seek medical attention immediately.
Last Update：2024-04-10 22:29:15
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