Hazard Note: Corrosive 
Hazard Codes: C
Risk Statements:
22:  Harmful if swallowed  
29:  Contact with water liberates toxic gas  
34:  Causes burns
Safety Statements: 
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
39:  Wear eye/face protection 
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)

 2-Chloro-4-fluorobenzoyl chloride (21900-54-9) is moisture sensitive and can be stable under normal temperature and pressure conditions.It is not compatible with strong oxidizing agents,and you must not take it with reducing agents, strong bases.strong oxidants and amines.And also prevent it to broken down into hazardous decomposition products: hydrogen bromide,carbon dioxide,carbon monoxide,hydrogen fluoride gas, fluorine, hydrogen chloride.
 2-Chloro-4-fluorobenzoyl chloride (21900-54-9) is hazardous,so the first aid measures and others should be known .Such as: When on the skin: first,should  flush skin with plenty of water immediatelyfor at least 15 minutes while removing contaminated clothing and .Secondly,Get shoesmedical aid . Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.Then get medical aid soon.While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration While not breathing. when breathing is difficult, give oxygen.And as soon as to get medical aid if cough or other symptoms appear.Then you have the ingesting of the product : Wash mouth out with water,and get medical aid immediately. Notes to Physician: Treat supportively and