3-Fluorophenylhydrazine HCl
3-Fluorophenylhydrazine hydrochloride
CAS: 2924-16-5
Molecular Formula: C6H8ClFN2
3-Fluorophenylhydrazine HCl - Names and Identifiers
| Name | 3-Fluorophenylhydrazine hydrochloride |
| Synonyms | (3-fluorophenyl)hydrazine 3-Fluorophenylhydrazine HCl 3-FluorPhenylhydrazine hydrochloride 3-Fluorophenylhydrazine hydrochloride 3-FLUOROPHENYLHYDRAZINE HYDROCHLORIDE 1-(3-FLUOROPHENYL)HYDRAZINE HYDROCHLORIDE (3-Fluorophenyl)hydrazine monohydrochloride Hydrazine, (3-fluorophenyl)-, monohydrochloride |
| CAS | 2924-16-5 |
| EINECS | 220-886-4 |
| InChI | InChI=1/C6H7FN2.ClH/c7-5-2-1-3-6(4-5)9-8;/h1-4,9H,8H2;1H |
3-Fluorophenylhydrazine HCl - Physico-chemical Properties
| Molecular Formula | C6H8ClFN2 |
| Molar Mass | 162.59 |
| Melting Point | 268°C (dec.)(lit.) |
| Boling Point | 224.1°C at 760 mmHg |
| Flash Point | 89.3°C |
| Solubility | Chloroform : DMSO = 1 : 1 (Slightly), Methanol (Slightly) |
| Vapor Presure | 0.0931mmHg at 25°C |
| Appearance | Red powder |
| Color | White to light brown |
| BRN | 3627729 |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| MDL | MFCD00012934 |
3-Fluorophenylhydrazine HCl - 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. R43 - May cause sensitization by skin contact R40 - Limited evidence of a carcinogenic effect R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S36 - Wear suitable protective clothing. |
| UN IDs | 2811 |
| WGK Germany | 3 |
| HS Code | 29280000 |
| Hazard Class | IRRITANT |
| Packing Group | III |
3-Fluorophenylhydrazine HCl - Reference Information
| application | 3-fluorophenylhydrazine hydrochloride, as an important organic synthesis intermediate, is widely used in dye and pharmaceutical manufacturing industry and has a broad market prospect. |
| preparation | a preparation method of 3-fluorophenylhydrazine hydrochloride, comprising the following steps: (1) diazotization adding 50g of 3-fluoroaniline and 150ml of 37% concentrated hydrochloric acid into a 1L three-mouth bottle, cooling to 2 ℃ with ice salt, adding 85.7g of 35% sodium nitrite aqueous solution while stirring, keep the temperature at 2 ℃ for 1 hour. ⑵ Add 450ml of 37% concentrated hydrochloric acid, 450ml of water and 120g of zinc powder into the reaction solution for reduction, keep the temperature at 18 ℃ until the reaction is complete, and the reaction solution turns gray-white. Then add 20% sodium hydroxide solution until the PH value of the reaction solution is 10, and keep the temperature at 5 ℃ for 1 hour, precipitate crystals, and filter to obtain 26.6g of 3-fluorophenylhydrazine crude product. (3) Purification Dissolve 26.6g of crude 3-fluorophenylhydrazine in 532g of water, heat to 60 ℃ to completely dissolve it, add appropriate amount of activated carbon to decolorize for 20 minutes, heat filter to obtain colorless filtrate, keep temperature at 5 ℃ for 1 hour, precipitate crystals, and filter to obtain 22.1g of pure 3-fluorophenylhydrazine. (4) Salt formation Dissolve 22.1g of 3-fluorophenylhydrazine pure product in 15.4ml of 37% hydrochloric acid, stir at 65 ℃ until the reaction liquid precipitates and crystallizes, cool to 20 ℃, filter, rinse the filter cake with acetone, and dry to obtain 24.4g of 3-fluorophenylhydrazine hydrochloride product with 99.2% content and 39.1% yield. |
Last Update：2024-04-10 22:29:15
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