3-氯苯甲醛
3-Chlorobenzaldehyde
CAS: 587-04-2
Molecular Formula: C7H5ClO
3-氯苯甲醛 - Names and Identifiers
3-氯苯甲醛 - Physico-chemical Properties
| Molecular Formula | C7H5ClO |
| Molar Mass | 140.57 |
| Density | 1.241 g/mL at 25 °C (lit.) |
| Melting Point | 9-12 °C (lit.) |
| Boling Point | 213-214 °C (lit.) |
| Flash Point | 191°F |
| Water Solubility | insoluble |
| Vapor Presure | 0.164mmHg at 25°C |
| Appearance | Liquid |
| Specific Gravity | 1.235 |
| Color | Clear colorless to light yellow |
| BRN | 507098 |
| Storage Condition | Keep in dark place,Inert atmosphere,2-8°C |
| Sensitive | Air Sensitive |
| Refractive Index | n20/D 1.563(lit.) |
| Physical and Chemical Properties | Density 1.241 melting point 17-18°C Boiling Point 213-215°C refractive index 1.563-1.565 flash point 88°C water soluble soluble |
| Use | Intermediates for pesticides, pharmaceuticals, dyes, and specialty chemicals |
3-氯苯甲醛 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - 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. S37/39 - Wear suitable gloves and eye/face protection |
| UN IDs | 2810 |
| WGK Germany | 2 |
| FLUKA BRAND F CODES | 1-9 |
| TSCA | Yes |
| HS Code | 29130000 |
| Hazard Note | Irritant |
3-氯苯甲醛 - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| uses | organic intermediates. Used as an intermediate for pesticides, medicines, dyes and specialty chemicals Used as an intermediate for medicines, dyes and pesticides. |
| production method | is obtained from m-nitrobenzaldehyde through the following steps: cool the solution prepared by stannous chloride and concentrated hydrochloric acid to 5 ℃, slowly add m-nitrobenzaldehyde in stages, stir vigorously, and the reaction process is quickly heated to about 100 ℃. Cold to about 2 ℃ in an ice salt bath, orange-red crystals are precipitated to obtain a paste suspension. Under stirring, add sodium nitrite aqueous solution from the liquid level, keep the temperature at 0-5 ℃, and finally, the solution should make the starch potassium iodide test paper turn blue. Add the diazonium salt solution to cuprous chloride solution at 75 ℃, mix thoroughly, add concentrated hydrochloric acid, stir well, and leave overnight. Carry out steam distillation, collect the distillate, extract with ether, and dry the extract with anhydrous calcium chloride. Filtration, evaporation of ether, vacuum distillation, collection of 107-109 ℃(3.47kPa) fraction to obtain the finished product, the yield is above 75%. |
Last Update：2024-04-09 15:16:46
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