4-amino-1-naphthol
- CAS NO.:2834-90-4
- Empirical Formula: C10H9NO
- Molecular Weight: 159.18
- MDL number: MFCD00151985
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-11-06 14:35:57
What is 4-amino-1-naphthol?
Chemical properties
Acicular crystals. Soluble in water.
The Uses of 4-amino-1-naphthol
Inhibitor of polymerization, chemical intermediate. Must be kept dry during storage to avoid oxidation and discoloration.
Production Methods
Orange I in aqueous alkaline solution is treated with sodium dithionite at 40 – 50℃, and the resulting suspension is heated to 70℃ to complete the reaction. The crude product is collected by filtration and dissolved in hot aqueous hydrochloric acid in the presence of a reducing agent. On cooling, needles of the hydrochloride salt crystallize and can be isolated in 70 % yield. Alternatively, the crude paste may be dissolved in dilute alkali in the presence of a reducing agent and acylated with acetic anhydride or acryloyl chloride, for example, to give 4- acetylamino-1-naphthol or 4-acryloylamino-1- naphthol, which have been used as azo coupling components.
Safety information for 4-amino-1-naphthol
New Products
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