Dimethoate

CAS RN: 60-51-5

Ecotoxicity Values

LC50 Lepomis macrochirus (Bluegill, weight 0.3 g) 6.0 mg/L/96 hr; temp 24 deg C. Static bioassay without aeration, pH 7.2-7.5, water hardness 40-50 mg/L as calcium carbonate and alkalinity of 30-35 mg/L. /Technical, 97.4%/
LC50 Lepomis macrochirus (Bluegill) 28.0 mg/L/24 hr /Conditions of bioassay not given/
LD50 Agelaius phoeniceus (Red-winged blackbird) oral 5.4 mg/kg /from table/
LD50 Starlings oral 31.6 mg/kg
LC50 Cyprinus carpio (carp) 22.39 mg/L/168 hr /From table; Conditions of bioassay not specified/
LC50 Cyprinus carpio (Carp) 694 mg/L/96 hr; static, 21 deg C reconstituted water
LC50; Species: Cyprinus carpio (Common carp, fingerling, length 4.5-5.5 cm, weight 1.1-1.4 g); Conditions: freshwater, static; Concentration: 4.00 ppm for 48 hr (95% confidence interval: 2.62-6.10 ppm)
LC50; Species: Cyprinus carpio (Common carp, fingerling, length 4.5-5.5 cm, weight 1.1-1.4 g); Conditions: freshwater, static; Concentration: 3.56 ppm for 72 hr (95% confidence interval: 2.68-4.71 ppm)
LC50; Species: Cyprinus carpio (Carp); Conditions: freshwater, renewal; Concentration: 4.65 mg/L for 96 hr
LC50 Anas platyrhynchos (Mallard duck, age 10 days) 1011 mg/L in 5-day diet (95% confidence limit 707-1372 mg/L) /Technical, 99%/
LD50 Anas platyrhynchos (mallards) male, oral 41.7 mg/kg (95% confidence limit 30.1-57.8 mg/kg), age 3-4 mo /Sample purity 97%/
LD50 Anas platyrhynchos (mallards) female, oral 63.5 mg/kg (95% confidence limit 45.8-88.1 mg/kg), age 3-4 mo /Sample purity 99.8%/
LC50 Phasianus colchicus (Ring-necked pheasants, age 10 days) 332 mg/L in 5-day diet (95% confidence limit 293-376 mg/L) /Technical, 99%/
LD50 Phasianus colchicus (Pheasant, male, age 3-4 months) oral 20.0 mg/kg (95% confidence limit 15.9-25.2 mg/kg) /Sample purity 97%/
LC50 Coturnix japonica (Japanese quail) 346 mg/L in 5-day diet (95% confidence limit 303-394 mg/L) age 14 days /Technical, 99%/
LC50 Coturnix japonica (Japanese quail) oral 496 ppm in 5-day diet (95% confidence limit 373-659 ppm), age 14-day /Dimethoate (Cygon 2E)/
EC50 Skeletonema costatum (marine algae), effect: decreased dry weight is 9.5 mg/L/96 hr /Conditions of bioassay not specified/
EC50 Skeletonema costatum (marine algae), effect: protein content 10.65 mg/L/96 hr. /Conditions of bioassay not specified/
EC50 Skeletonema costatum (marine algae) cell count 11.2 mg/L/96 hr. /Conditions of bioassay not specified/
EC50 Skeletonema costatum (marine algae) carbohydrate and chlorophyll a content 10.8 mg/L/96 hr. /Conditions of bioassay not specified/
LC50 Gammarus lacustris (Scud) 0.9 mg/L (24-hr), 0.4 mg/L (48-hr), and 0.20 mg/L (96-hr) /Conditions of bioassay not specified in source examined/ /from table/
LD50 Apis mellifera L (Honey bee) oral 93 to 150 ng/bee
LD50 Apis mellifera L (Honey bee) contact 98 to 120 ng/bee
LD50; Species: Peromyscus maniculatus (Deer mouse) oral 320 mg/kg
LC50; Species: Danio rerio (Zebra danio); Conditions: freshwater, static, 23 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 7.5 mg/L for 48 hr (95% confidence interval: 6.1-9.7 mg/L) /10% EC/
LC50; Species: Danio rerio (Zebra danio); Conditions: freshwater, renewal, 23 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 6.8 mg/L for 96 hr (95% confidence interval: 5.6-8.3 mg/L) /10% EC/
EC50; Species: Chlorella vulgaris (Green algae); Conditions: freshwater, static; Concentration: 51 mg/L for 10 days; Effect: general growth pattern changes
LC50 Daphnia magna (Water flea) 2.50 mg/L/48 hr /from table; Conditions of bioassay not specified/
EC50; Species: Daphnia magna (Water flea, age <72 hr); Conditions: freshwater, static, 22 deg C, pH 7-7.8; Concentration: 3.5-10 mg/L for 24 hr; Effect: intoxication, immobilization
EC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, open system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 1.5 mg/L for 48 hr (95% confidence interval: 1.3-1.9 mg/L) Effect: intoxication, immobilization /> or =99% pure/
EC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, closed system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 1.8 mg/L for 48 hr (95% confidence interval: 1.6-2.1 mg/L) Effect: intoxication, immobilization /> or =99% pure/
EC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, open system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 0.56 mg/L for 48 hr 95% confidence interval: 0.48-0.66 mg/L); Effect: intoxication, immobilization /10% EC/
EC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, closed system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 0.78 mg/L for 48 hr (95% confidence interval: 0.68-0.89 mg/L); Effect: intoxication, immobilization /10% EC/
EC50; Species: Daphnia magna (Water flea, age <1 day); Conditions: freshwater, renewal, 19 deg C; Concentration: 0.31 mg/L for 16 days; Effect: general reproduction
LC50; Species: Daphnia magna (Water flea, age <1 day); Conditions: freshwater, static, 19 deg C; Concentration: 6.4 mg/L for 48 hr
LC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, open system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 0.83 mg/L for 48 hr (95 % confidence interval: 0.41-1.68 mg/L) /10% EC/
LC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, closed system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 1.26 mg/L for 48 hr /10% EC/
LC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, open system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 1.7 mg/L for 48 hr (95 % confidence interval: 1.5-2.0) /> or = 99% pure/
LC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static, closed system, 19.5 deg C, pH 7.4-8.4. dissolved oxygen >6 mg/L; Concentration: 2.0 mg/L for 48 hr (95 % confidence interval: 1.7-2.4) /> or = 99% pure/
LC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, renewal, 20 deg C; Concentration: 0.11 mg/L for 23 days (95% confidence interval: 0.09-0.13 mg/L) /> or =99% pure/
LC50 /Oncorhynchus mykiss/ (Rainbow trout) 20.0 mg//L/24 hr /Conditions of bioassay not given/
LC50 /Oncorhynchus mykiss/ (Rainbow trout, weight 1.5 g) 6.2 mg/L/96 hr (95% confidence limit 4.1-9.3 mg/L), temp 21 deg C. Static bioassay without aeration, pH 7.2-7.5, water hardness 40-50 mg/L as calcium carbonate and alkalinity of 30-35 mg/L. /Technical, 97.4%/
LC50 Oncorhynchus mykiss (Rainbow trout) 8.88 mg/L/21 days; flow through /99.0% purity/
LC50 /Oncorhynchus mykiss/ (Rainbow trout) 58.0 mg/L/24 hr; 27.0 mg/L/48 hr /Rogor 40, 32% dimethoate, from table; Conditions of bioassay not specified/
EC50; Species: Oncorhynchus mykiss (Rainbow trout, age 6 months); Conditions: freshwater, static, 12 deg C, hardness 98.45 mg/L CaCO3, dissolved oxygen >6.5 mg/L; Concentration: 8.6 mg/L for 48 hr; Effect: general behavioral changes /98% purity/
EC50; Species: Oryzias latipes (Medaka, age 28-35 days); Conditions: freshwater, static, 23 deg C, pH 8.2, hardness 209.43 mg/L CaCO3; Concentration: 105 mg/L for 24 hr; Effect: Intoxicaiton, immobilization /98% purity/
EC50; Species: Oryzias latipes (Medaka, age 28-35 days); Conditions: freshwater, static, 23 deg C, pH 8.2, hardness 209.43 mg/L CaCO3; Concentration: 128 mg/L for 48 hr; Effect: Intoxicaiton, immobilization /98% purity/
EC50; Species: Oryzias latipes (Medaka, age 28-35 days); Conditions: freshwater, static, 23 deg C, pH 8.2, hardness 209.43 mg/L CaCO3; Concentration: 118 mg/L for 72 hr; Effect: Intoxicaiton, immobilization /98% purity/
EC50; Species: Oryzias latipes (Medaka, age 28-35 days); Conditions: freshwater, static, 23 deg C, pH 8.2, hardness 209.43 mg/L CaCO3; Concentration: 108 mg/L for 96 hr; Effect: Intoxicaiton, immobilization /98% purity/
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