CFR / 
Title 40
 / 
Part 180
 / 
Sec. 180.1074 F.D.&C.; Blue No. 1; exemption from the requirement of
F.D.&C.; Blue No. 1 is exempted from the requirement of a tolerance when used as an aquatic plant control agent.
[47 FR 25963, June 16, 1982]