Physiological properties The solid or solution contact with eyes may cause irritability and inflammation. Prolonged or repeated skin contact may cause slight pain. A large number of take in can cause the nose, throat and upper respiratory tract infection. First aid Eye contact:In the event of eye contact occurring immediately irrigate with copious quantities of clean water,holding the eye open if necessary.Obtain medical attention. Skin contact:Wash with water.Remove contaminated clothing,which should be washed before re-use. Ingestion:Rinse the mouth with water.Obtain medical attention. Physical properties Molecular mass 77.08 Flash point 136℃ Solubility in water:at 4℃ 148g/100ml Melting…