556.163—Clorsulon.
        
        (a) Acceptable daily intake (ADI).
         The ADI for total residues of clorsulon is 8 micrograms per kilogram of body weight per day.
    
    
        
        (b) Tolerances—
        
        (1) Cattle—
         The tolerance for parent clorsulon (the marker residue) is 1.0 part per million.