Toxicity ClassificationLC50 (mg/L*)Toxicity ClassificationLC50 (mg/L*)
super
extreme
High
moderate
<0.01
0.01 - 0.10
0.11 - 1.0
1.1-10
slight
minimal - nontoxic
*1 mg/L = 1 part per million (ppm)
11 - 100
>100

 

Chemical NameCommonly Used Trade NameToxicity Classification96‑houra LC50 (mg/L)
Rainbow troutbbluefillb
abamectinAffirm, Avidsuper‑extreme0.0030.01
acephateOrthene, Monitor, Payloadminimal>100020.50
aldicarbTemikhigh‑moderate0.91.5
azinphos‑methylGuthionextreme0.0030.004
Bacillus thuringiensisDipel, Thuricide,Vectobacminimal> 1,000-
bendiocarbDycarb, Ficam, Turcamhigh-().4
cabarylSevinmoderate1.310
carbofuranFuradanhigh0.30.2
chlorpyrifosKillmaster II, Brodan, Eradexsuper‑extreme0.0030. 01
cypermethrinAmmo, Cynoff, Furysuper0.00080.002
diazinonDiazinonmoderate‑slight2.616
diflubenzuronDimilinminimal->100
dimetlsoateCygonmoderate6.26
disulfotonDi‑Systomhigh‑moderate1.9().3
endosulfanThiodansuper0.0010.001
esfenvalerateAsanasuper0.00030.0003
ethopropMocapmoderate‑slight13.82.1
oxydemeton‑methyl
Metasystox‑R
moderate‑slight411
esfenvalerateEctrin, Pydrinsuper0.004-
fluvalinateMavriksuper0.0030.0009
fonofosDyfonateextreme‑super0.020.007
lindaneLindanesuper‑extreme0.0020.03
malathionCythionextreme0.070.02
methamidophosMonitorslight2534
methidathionSupracideextreme‑super0.010.002
methiocarbMesurolhigh0.60.2
methomylLannatehigh‑moderate3.40.8
methoxychlorMethoxychlorextreme0.010.03
methyl parathionPenncap-Mhigh‑moderate2.81.0
naledDibromhigh‑moderate0.22.2
oxamylVydatemoderate4.25.6
parathionParathion, Parasprayextreme‑high0.80.02
permethrinAmbush, Pouncesuper0.0030.005
phorateHoldern,Thimetsuper‑extreme0.010.001
phosmetImidanextreme0.020.02
propoxurBaygonmoderate6.63.7
pyrethrinVariousextreme-0.04
resmethrinScourgesuper0.002 - 0.00030.003 - 0.0008
rotenoneRotenone, Rotacideextreme0.030.02
temephosAbateextreme‑slight0.2 - 3.51.4 - 21.8
terbufosCountersuper‑extreme0.010.004
tetrachlorvinphosRabonhigh-0.5
trichlorfonDylox, Proxolextreme‑high0.070.2
aToxicity values are determined by 96h exposure time unless otherwise specified
bToxicity values are for rainbow trout and bluegill sunfish unless otherwise specified