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33 <br />SUMMARY OF ACUTE TOXICITY <br /> 96-h LC50 <br />Test Wt Temp 95% CI <br />organism (g) (C) (µg/L) <br />Cutthroat trout 0.3 10 67 <br /> 56-81 <br />Lake trout 0.3 10 44 <br /> 38-51 <br />Palaemonetes M 21 32 <br />Chemical Name: N,N-Dimethyl-2,2-diphenylacetamide <br />Alternate Names: CAS 957-51-7, Dymid, Enide, ENT- <br />28567 <br />Principal Use: Herbicide <br />Sample Description: Technical material, 100W <br />NOTE: A decrease in temperature from 10 ° to 5 °C SUMMARY OF ACUTE TOXICITY <br />produced no change in toxicity to cutthroat trout; <br />however, LC50's were 3 times higher for lake trout. A 96-h LC50 <br />temperature increase from 10° to 15°C produced no Test Stage or Temp 95% Cl <br />substantial change in toxicity to either species. An organism wt (g) (C) (mg/L) <br />increase in pH from 6.5 to 8.5 increased LC50 values Daphnia magna I1 21 588 <br />by as much as 30-fold. Aging of test solutions caused a 43-79 <br />twofold increase in LC50 values after 1 week but no <br />change in toxicity was observed in solutions aged 4 C. uidua M 21 51a <br />weeks. Flow-through tests produced TILC50's of 54 37-71 <br />µg/L for lake trout and 102 µg/L for cutthroat trout. <br />Cumulative toxicity indices were 1.5 for both species, Asellus M 15 > 100 <br />indicating little cumulative toxic action. <br /> G. fasci¢tus M 15 > 100 <br />DIOXATHION <br />Chemical Name: 2,3-p-Dioxanedithiol S,S-bis(0,0- <br />diethyl phosphorodithioate) <br />29-35 <br />Goldfish <br />Alternate Names: CAS 78-34-2, Delnav, ENT-22897, Fathead minnow <br />Hercules AC528, Navadel, Ruphos <br />Principal Use: Insecticide <br />Sample Description: Technical material, 100% <br />SUMMARY OF ACUTE TOXICITY <br /> 96-h LC50 <br />Test Stage or Temp 95% CI <br />organism wt (g) (C) (µg/L) <br />Daphnia magna 11 2 0.35a <br /> 0.25-0.49 <br />G. fasciatus M 15 8.6 <br /> 5.4-13.8 <br />Cutthroat trout 1.0 13 1106 <br /> 98-120 <br />Rainbow trout 1.4 13 69b <br /> 59-81 <br />Largemouth bass 1.3 18 22b <br /> 20-25 <br />a48-h EC50. <br />bTested in hard water, 272 ppm CaCO, <br />a48-h EC50. <br />DIPHENAMID <br />1.0 18 53 <br />42-68 <br />0.9 18 48 <br />38-60 <br />DIQUAT <br />Chemical Name: 6,7-Dihydrodipyrido [1,2-a:2',1'-c] <br />pyrazinediium dibromide, monohydrate <br />Alternate Names: Aquacide, CAS 85-00-7, Deiquat, <br />Dextrone, F1312, Reglon, Reglone <br />Principal Use: Herbicide <br />Sample Description: Liquid formulation, 35.3% <br />SUMMARY OF ACUTE TOXICITY <br /> 96-h LC50 <br />Test Stage or Temp 95% CI <br />organism wt (g) (C) (mg/L) <br />G. fasci¢tus M 15 > 100a <br />Black bullhead 0.8 12 170 <br /> 113-255