4-(phenylazo)-1-naphthol - Names and Identifiers
4-(phenylazo)-1-naphthol - Physico-chemical Properties
| Molecular Formula | C16H12N2O
|
| Molar Mass | 248.28 |
| Density | 1.1077 (rough estimate) |
| Boling Point | 391.35°C (rough estimate) |
| Refractive Index | 1.5800 (estimate) |
4-(phenylazo)-1-naphthol - Upstream Downstream Industry
4-(phenylazo)-1-naphthol - Introduction
4-(Phenylazo)-1-naphthol is an organic dye with the chemical formula C16H11N3O. The following is a description of the properties, uses, preparation and safety information of the compound:
Nature:
4-(Phenylazo)-1-naphthol was a solid having an orange-yellow crystalline powder form. It is poorly soluble in water and soluble in organic solvents such as ethanol and chloroform. It is stable under acidic and neutral conditions, but decomposes easily under alkaline conditions.
Use:
4-(Phenylazo)-1-naphthol is widely used as a dye and indicator. It can be used to dye materials such as textiles, leather and paper, giving them an orange-yellow color. In addition, 4-(phenylazo)-1-naphthol can also be used as an analytical reagent for the detection of some cations, such as aluminum, cobalt and iron.
Method:
The method for preparing 4-(phenylazo)-1-naphthol is generally by reacting 1-naphthylamine with phenylimine. First, 1-naphthylamine is reacted with sodium nitrite under alkaline conditions to produce a nitrosation of 1-naphthylamine. The resulting nitroso compound is then reacted with phenylimine under acidic conditions to produce 4-(phenylazo)-1-naphthol.
Safety Information:
4-(Phenylazo)-1-naphthol is relatively safe under general conditions of use, but the following points should be noted:
-It may be irritating to the skin and eyes and should be avoided when in contact.
-Wear appropriate personal protective equipment, such as gloves and goggles, when handling and handling.
-It should be kept away from fire and heat sources and stored in a cool, dry place.
-Before use, you should read and follow the relevant safety instructions and operating instructions.
In summary, 4-(phenylazo)-1-naphthol is an organic dye that can be widely used for dyeing and indicator. Its preparation method is relatively simple, but safety precautions should be paid attention to when using it.
Last Update：2024-04-10 22:29:15