U.S. EPA registered pesticide info
'Big Boy Tc90 (emulsifiable Liquid Copper Fungicide)' is a fungicide. Its Federal EPA registration number is: 8620-40. It was originally approved by EPA on 19 Nov 1969. Its registration got cancelled on 31 Dec 1987. It has a 'Caution' signal word. It has the following active ingredients: Copper salts of fatty and rosin acids. It's approved for 1 sites including peanuts. It is also approved for 1 pests and pest groups including but not limited to leaf spot.