Moderately toxic by ingestion and intraperitoneal route. When heated to decomposition it emits acrid smoke and irritating vapors.
Hazard Codes: Xi
Safety Statements: 22-24/25 
S22: Do not breathe dust
S24/25: Avoid contact with skin and eyes
WGK Germany: 2
RTECS: PC4962500
Hazard Note: Irritant 
HS Code: 29145000

Stability and Reactivity of 4-Methoxybenzophenone (CAS NO.611-94-9):
Chemical Stability: Stable under normal temperatures and pressures.  
Conditions to Avoid: Incompatible materials.  
Incompatibilities with Other Materials Strong oxidizing agents.  
Hazardous Decomposition Products Carbon monoxide, carbon dioxide.  
Hazardous Polymerization Has not been reported.  
First Aid Measures of 4-Methoxybenzophenone (CAS NO.611-94-9):
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.  
Ingestion: Get medical aid. Wash mouth out with water.  
Inhalation: Remove from exposure and move to fresh air immediately.  
Notes to Physician: Treat symptomatically and supportively.  
Handling and Storage of  4-Methoxybenzophenone (CAS NO.611-94-9):
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.  
Storage: Store in a cool, dry place. Store in a tightly closed container.