(E)-4-((4-hydroxyphenyl)diazenyl)benzoic acid
(E)-4-((4-hydroxyphenyl)diazenyl)benzoic acid
CAS: 105299-45-4
Molecular Formula: C13H10N2O3
(E)-4-((4-hydroxyphenyl)diazenyl)benzoic acid - Names and Identifiers
(E)-4-((4-hydroxyphenyl)diazenyl)benzoic acid - Physico-chemical Properties
| Molecular Formula | C13H10N2O3 |
| Molar Mass | 242.23 |
| Density | 1.30±0.1 g/cm3(Predicted) |
| Melting Point | 270-280°C |
| Boling Point | 497.7±30.0 °C(Predicted) |
| pKa | 3.94±0.10(Predicted) |
| Storage Condition | 2-8°C |
(E)-4-((4-hydroxyphenyl)diazenyl)benzoic acid - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36 - Irritating to the eyes |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
(E)-4-((4-hydroxyphenyl)diazenyl)benzoic acid - Introduction
4-hydroxy -4 '-carboxyazobenzene, chemical formula C12H9NO4. It is an organic compound, often referred to simply as phenol amine azo dyes. The following is a description of its nature, use, preparation and safety information:
Nature:
-Appearance: 4-hydroxy-4 '-carboxyazobenzene is a yellow crystal with good solubility.
-Melting point: about 155-157 degrees Celsius.
-Molecular weight: 223.21g/mol.
Use:
-4-Hydroxy-4 '-carboxyazobenzene is an important dye, which is mainly used in the dyeing of textiles, leather and daily necessities.
-It is usually used as a raw material for imine azo series dyes, and can generate various dyes with different colors through reaction.
-In addition, 4-hydroxy-4 '-carboxyazobenzene can also be used as a catalyst for the synthesis of dye intermediates and organic synthesis reactions.
Preparation Method:
4-hydroxy -4 '-carboxyazobenzene has a variety of preparation methods:
-A common method is to oxidatively couple aminophenol with phenol in the presence of sulfuric acid.
-Another method is to oxidize aminophenol and nitrobenzene in the presence of sulfuric acid to obtain nitroazobenzene, and then undergo reduction and carboxylation reactions to generate the target product.
Safety Information:
- 4-hydroxy -4 '-carboxyazobenzene is irritating to skin, eyes and respiratory tract, and protective measures should be paid attention to when using.
-Avoid inhalation, contact with skin and eyes. In case of contact, rinse immediately with plenty of water.
-Avoid contact with fire sources. Be sure to store in a cool, dry place, away from high temperatures and open flames.
As the use of this compound may require specialized knowledge and laboratory equipment, please do so under the guidance of an experienced person.
Nature:
-Appearance: 4-hydroxy-4 '-carboxyazobenzene is a yellow crystal with good solubility.
-Melting point: about 155-157 degrees Celsius.
-Molecular weight: 223.21g/mol.
Use:
-4-Hydroxy-4 '-carboxyazobenzene is an important dye, which is mainly used in the dyeing of textiles, leather and daily necessities.
-It is usually used as a raw material for imine azo series dyes, and can generate various dyes with different colors through reaction.
-In addition, 4-hydroxy-4 '-carboxyazobenzene can also be used as a catalyst for the synthesis of dye intermediates and organic synthesis reactions.
Preparation Method:
4-hydroxy -4 '-carboxyazobenzene has a variety of preparation methods:
-A common method is to oxidatively couple aminophenol with phenol in the presence of sulfuric acid.
-Another method is to oxidize aminophenol and nitrobenzene in the presence of sulfuric acid to obtain nitroazobenzene, and then undergo reduction and carboxylation reactions to generate the target product.
Safety Information:
- 4-hydroxy -4 '-carboxyazobenzene is irritating to skin, eyes and respiratory tract, and protective measures should be paid attention to when using.
-Avoid inhalation, contact with skin and eyes. In case of contact, rinse immediately with plenty of water.
-Avoid contact with fire sources. Be sure to store in a cool, dry place, away from high temperatures and open flames.
As the use of this compound may require specialized knowledge and laboratory equipment, please do so under the guidance of an experienced person.
Last Update：2024-04-10 22:29:15
