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
benomylBenlate,high0.20.2
captanAgrox, Captan, Captecextreme‑moderate0.060.12
carboxinVitavaxhigh‑moderate>0.11.2
chlorothalonilBravo, Daconil,Terlanilhigh0.30.3
coppersutfateBasicop,Bluestonehigh‑moderate0.140.8‑7.3d
fenarimolRubiganhigh20.9
fosetyl ‑AlAlietteminimat428-
iprodioneRovralmoderate46
mancozebDithane, Fore, Manzatehigh‑moderate2 (48h)1
manebManeb, Manexhigh‑moderate2 (48h)1
metalaxylRidomilminimal>100>100
metiramPolyramhigh‑slight185 (carp)
PCPPentachlorophenolhigh0.2 (48h)-
PCNBTerraclorhigh0.60.1
propiconazoleAlamo, Orbit,Banner, Tilthigh‑moderate0.91.3
thiophanate‑methylTopsinmoderate9.4-
thiramThiram, Spotretehigh‑moderate0.10.2
triadimefonBayletonslight1411
triforineFunginexminimal>1000>1000
triforineRonilan, Ornalinslight‑minimal53130 (guppy)
ziramZirammoderate5 (5h, goldfish)-
aToxicity values are determined by 96h exposure time unless otherwise specified
bToxicity values are for rainbow trout and bluegill sunfish unless otherwise specified
cToxicity depends on formulation
dToxicity depends on pH ‑ more toxic in water with low alkalinity