US EPA
United States Environmental Protection Agency
Ecological Fate and Effects Division
Office of Pesticide Programs
OPP Pesticide Ecotoxicity Database
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Pesticide Details
Pesticide
Methyl parathion
PC Code
053501
CAS Number
298-00-0
Type of Pesticide
Insecticide
Type of Organism
Crustacea
Common Name
Water flea
Scientific Name
Daphnia magna
Age
LifCyc
Guideline
[72-4]
Test Type
[S] Static system (aquatic)
% AI
96%
Study Length
12 D
Dose Type
[LOEC] for aquatic early lifestage and full lifecycle studies with both an NOEC and an LOEC
Toxicity
0.562 Parts per Billion
95% Confidence Levels
N.A.
Probit Slope
N.A.
NGL
NOEL
0.178
Study Date
1987
Review Date
1991
Category
S
MRID, ACC, TN Numbers
41506801
Laboratory
Bayer Co., Agricultural Division, U..S. (NC, KS or MO)
Reviewer
M.Roberts
Batch Number
031511QA
Eggs Laid
% Eggs Cracked
% Eggs Viable
% Live Embryos
% Egg Hatch
0.562
14 Day Survive
0.562
Growth Effect