Calcium sulfate is environmentally safe and not flammable. 

 If swallowed symptoms will include severe stomach pain and blocking of the digestive tract as the substance hardens in water. 
First Aid- If swallowed induce vomiting immediately and seek medical help.

 If inhaled symptoms include shortness of breath and trouble breathing.
First Aid- If inhaled move to fresh air and seek medical attention.

 If contacted with skin symptoms include slight irritation and possible burning sensation.
First Aid- If contacted with skin flush for fifteen minutes and seek medical attention. 


When using any chemical please wear all protective equipment and follow lab protocol.