Improper use of Basic Copper Sulphate can be harmful to human eyes, skin and respiratory tract. Effects of short-term overexposure Inhalation: Inhalation of high-concentration cupric sulfate sulfate can irritate the upper respiratory tract. In severe cases, throat edema, bronchitis and even pulmonary edema may occur. Eye contact: Conjunctivitis and edema are caused by splashing with...