Pesticide Details

Pesticide MCPA isooctyl ester (Rhonox formula)
PC Code 030563
CAS Number 26544-20-7
Type of Pesticide Herbicide
Type of Organism Crustacea
Common Name Water flea
Scientific Name Daphnia magna
Age <24 hr
Guideline [72-2] Freshwater Invertebrate Acute using TGAI or TEP (FIFRA 158.490)
Test Type [F] Flow through system(aquatic acute or chronic)
% AI 68.7%
Study Length 48 hr
Dose Type [EC50] 50% Effect Concentration
Toxicity 0.29 Parts Per Million
95% Confidence Levels 0.26-0.33
Probit Slope 7.09
NGL
NOEL 0.11
Study Date 1990
Review Date 1991
Category C
MRID, ACC, TN Numbers 41800909
Laboratory Analytical Biochemical Laboratory (ABC), Columbia, Missouri
Reviewer K. Montague
Batch Number 022814QA
Eggs Laid
% Eggs Cracked
% Eggs Viable
% Live Embryos
% Egg Hatch
14 Day Survive
Growth Effect