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BeiJing Hwrk Chemicals Limted
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0757-86329057 18934348241 |
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Products Intro: |
Product Name:4-amino-1-naphthol CAS:2834-90-4 Purity:98.00% Package:1kg
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| 4-amino-1-naphthol Basic information |
Product Name: | 4-amino-1-naphthol | Synonyms: | 4-Amino-1-naphthalenol;4-amino-1-naphthol;1-Amino-4-naphthol;4-azanylnaphthalen-1-ol;1-Amino-4-hydroxynaphthalene | CAS: | 2834-90-4 | MF: | C10H9NO | MW: | 159.18 | EINECS: | | Product Categories: | | Mol File: | 2834-90-4.mol | |
| 4-amino-1-naphthol Chemical Properties |
| 4-amino-1-naphthol Usage And Synthesis |
Chemical Properties | Acicular crystals. Soluble in water. | Uses | 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. |
| 4-amino-1-naphthol Preparation Products And Raw materials |
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