2-fluoro-4-nitrophenolate
2-fluoro-4-nitrophenol
CAS: 403-19-0
Molecular Formula: C6H4FNO3
2-fluoro-4-nitrophenolate - Names and Identifiers
| Name | 2-fluoro-4-nitrophenol |
| Synonyms | 5-Fluoro-2-nitrophen 2-Fluoro-4-nitrophenol o-fluoro-4-nitrophenol 2-fluoro-4-nitrophenol 2-fluoro-4-nitrophenolate Phenol, 2-fluoro-4-nitro- |
| CAS | 403-19-0 |
| InChI | InChI=1/C6H4FNO3/c7-5-3-4(8(10)11)1-2-6(5)9/h1-3,9H/p-1 |
| InChIKey | ORPHLVJBJOCHBR-UHFFFAOYSA-N |
2-fluoro-4-nitrophenolate - Physico-chemical Properties
| Molecular Formula | C6H4FNO3 |
| Molar Mass | 157.1 |
| Density | 1.4306 (estimate) |
| Melting Point | 120-122 °C (lit.) |
| Boling Point | 281.2±25.0 °C(Predicted) |
| Flash Point | 123.9°C |
| Solubility | soluble in Methanol |
| Vapor Presure | 0.00212mmHg at 25°C |
| Appearance | powder to crystal |
| Color | White to Light yellow |
| BRN | 1944995 |
| pKa | 5.67±0.22(Predicted) |
| Storage Condition | Inert atmosphere,Room Temperature |
2-fluoro-4-nitrophenolate - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| HS Code | 29089000 |
| Hazard Class | IRRITANT |
2-fluoro-4-nitrophenolate - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| application | 2-fluoro-4-nitrophenol is an organic synthesis intermediate and a pharmaceutical intermediate, which can be used in laboratory research and development processes and chemical production processes. |
| preparation | adopts the following steps: a) nitrosation reaction: 2-fluorophenol is generated by nitrosation in the presence of dilute hydrochloric acid with 2-fluorophenol as raw material. The concentration of dilute hydrochloric acid is 15 ~ 20%, preferably 15%; The nitrosation reagent is alkali metal nitrite or nitrite, preferably sodium nitrite; The nitrosation reaction temperature is -5~5 ℃, preferably 0 ℃; B) Oxidation reaction: 2-fluoro-4-nitrophenol is prepared by oxidizing 2-fluoro-4-nitrophenol with dilute nitric acid. The concentration of dilute nitric acid used is 15-55%, preferably 30%. The beneficial effects of the present invention are that the preparation process is simple, only a very small amount of isomers are produced during nitrosation, the yield is as high as 90%, the refining is easy, the purity can reach more than 99.5%, and the production cost is reduced. |
Last Update：2024-04-10 22:29:15
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