2-Chloro-5-fluorobenzoylchloride（CAS# 21900-51-6)
| Risk Codes | R34 – Causes burns R22 – Harmful if swallowed |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | 3265 |
| Hazard Note | Corrosive |
| Hazard Class | 8 |
| Packing Group | II |
Introduction
It is an organic compound with the chemical formula C7H3Cl2FOCl and a molecular weight of 205.5. It is a colorless to light yellow liquid with a pungent odor.
The chloride is mainly used in organic synthesis as an important reagent and intermediate. It can be used to prepare various chlorinated, acylated and anhydridized products. It is often used in the synthesis of pesticides, pharmaceuticals and dyes.
The preparation method of chloride is generally obtained by reacting 2-chloro-5-fluorobenzoic acid with thionyl chloride. The specific reaction conditions can be adjusted according to actual needs.
Regarding safety information, chloride is an organic compound. Care should be taken to avoid contact with skin and eyes, and it should be handled in a well-ventilated place. Use should wear appropriate protective equipment, such as laboratory gloves, protective glasses, etc. During storage and handling, correct safe handling and disposal methods should be observed.
