Organophosphorus insecticides
[Acephate] CAS[30560-19-1]
= O,S-dimethyl N-acetylphosphoramidothioate
Trade name
Acephate (J (Date registered 10/30/1973), I, A, B): Orthene, Ortran, Tornado
Chemical formula
C4H10NO3PS
Purpose for use
Organophosphorus insecticide.
Test organisms
Oligochaeta: Eisenia foetida (ref. ID; 7012)
Oligochaeta: Lumbricus terrestris (ref. ID; 6904)
[Azinphos-ethyl] CAS[2642-71-9]
= S-(3,4-Dihydro-4-oxobenzo[d]-1,2,3-tri-azixin-3-ylmethyl) O,O-diethyl phosphorodithioate
Trade name
Azinphos-ethyl (I, B): Cotonion-ethyl, Ethyl Guthion, Gusathion A, Triazotion
Chemical formula
C12H16N3O3PS2
Purpose for use
Insecticide.
Toxicity
LD50 (oral): rat (male) 17.5 mg/kg, (female) 12.5 mg/kg.
Test organisms
Protozoa: Colpidium campylum (ref. ID; 6784)
[Azinphos-methyl] CAS[86-50-0] UN2783
= S-(3,4-Dihydro-4-oxobenzo[d]-1,2,3-tri-azixin-3-ylmethyl) O,O-dimethyl phosphorodithioate
Trade name
Azinphos-methyl (I, B): Cotonion-methyl, Gusathion-M, Guthion
Chemical formula
C10H12N3O3PS2
Purpose for use
Insecticide.
Toxicity
LD50 (oral): rat (female) 16.4 mg/kg.
Test organisms
Protozoa: Colpidium campylum (ref. ID; 6784)
Oligochaeta: Aporrectodea caliginosa (ref. ID; 6072)
Oligochaeta: Eisenia fetida (ref. ID; 6074, 7012)
[Chlorpyrifos] CAS[2921-88-2] UN2783
= O,O-Diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate,
= O-3,5,6-Trichloro-2-pyridyl O,O-diethyl phosphorothioate
Trade name
Chlorpyrifos (J (Date registered 5/4/1971), I, A, B): Dursban, Lorsban
Chemical formula
C9H11Cl3NO3PS
Purpose for use
Organophosphate insecticide.
Mode of action
Acetylcholinesterase inhibitor. (ref. ID; 6758)
Toxicity
LD50 (oral): rat (male) 163 mg/kg, (female) 135 mg/kg, mouse 70 mg/kg.
Test organisms
Rotifera: Brachionus calyciflorus (ref. ID; 121, 127, 128, 2168)
Rotifera: Brachionus plicatilis (ref. ID; 128)
Oligochaeta: Aporrectodea caliginosa (ref. ID; 505)
Oligochaeta: Aporrectodea longa (ref. ID; 505)
Oligochaeta: Eisenia andrei (ref. ID; 6873)
Oligochaeta: Eisenia fetida (ref. ID; 505) or Eisenia foetida (ref. ID; 7012)
Oligochaeta: Eisenia veneta (ref. ID; 505)
Oligochaeta: Lumbricus rubellus (ref. ID; 505)
Oligochaeta: Lumbricus terrestris (ref. ID; 505)
Oligochaeta: Perionyx excavatus (ref. ID; 7085)
Nematoda: Caenorhabditis elegans (ref. ID; 6758)
Aquatic microcosm (ref. ID; 6828, 7139)
Sediment microcosm (ref. ID; 4448)
[Chlorpyrifos-methyl]
= O-3,5,6-Trichloro-2-pyridyl O,O-dimethyl phosphorothioate CAS[5598-13-0]
Trade name
Chlorpyrifos-methyl (J (Date registered 10/17/1974), I, A, B): Dowreldan, Reldan
Chemical formula
C7H7Cl3NO3PS
Purpose for use
Organophosphate insecticide.
Toxicity
LD50 (oral): rat (male) 2472 mg/kg, (female) 1828 mg/kg.
LD50 (oral): mouse (male) 2254 mg/kg, (female) 2032 mg/kg.
[Chlorpyrifos-methyl Oxon] CAS[5598-52-7]
Chemical formula
C7H7Cl3NO4P
[Chlorpyrifos-oxon] CAS[5598-15-2] UN2588
Trade name
Chlorpyrifos-oxon
Chemical formula
C9H11Cl3NO4P
Purpose for use
Organophosphate pesticide.
Test organisms
Oligochaeta: Lumbricus terrestris (ref. ID; 6753)
[Diazinon] CAS[333-41-5] UN3018
= O,O-Diethyl O-2-isopropyl-6-methylpyrimidin-4-yl phosphorothionate,
= O,O-Diethyl-2-isopropyl-4-methyl-6-pyrimidinnyl phosphorothionate,
= O,O-Diethyl-O-2-isopropyl-4-(methyl)-6-pyrimidinyl phosphorothioate
Trade name
Diazinon (J (Date registered 4/22/1955), I, B): Basudin, Kayazinon, Neocidol, Nucidol
Chemical formula
C12H21N2O3PS
Purpose for use
Organophosphate insecticide.
Diazinon is used for lawn and turf care. It is used on turf for the control of insect pests such as the black fairway beetle (Ataenius spretulus), hairy chinch bug (Blissus leucopterus hirtus), sod webworm (Parapediasia sp. and Pediasia sp.), ants and white grups (Phyllophaga sp.) It is also used to control insect pests in fruit, vegetable and field crops, grasslands and ornamentals. (ref. ID; 6905)
Toxicity
LD50 (oral): rat 150-600 mg/kg, mouse 80-135 mg/kg.
Test organisms
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 6096)
Rotifera: Brachionus calyciflorus (ref. ID; 111, 121, 192)
Oligochaeta: Lumbricus terrestris (ref. ID; 6899, 6900, 6904, 6905)
[Diazinon Oxon] CAS[962-58-3]
Trade name
Diazinon Oxon
Chemical formula
C12H21N2O4P
Purpose for use
Organophosphate insecticide.
[Dichlorvos] CAS[62-73-7] UN3018
= 2-2-Dichlorovinyl dimethyl phosphate
Trade name
Dichlorvos (J, I, B): DDVP (J Date registered 4/24/1957), Des, Dedevap, Nogos, Phosvit, Nuvan, Vapona
Chemical formula
C4H7Cl2O4P
Purpose for use
Organophosphorus insecticide.
Test organisms
Oligochaeta: Lampito mauritii (ref. ID; 6870)
[Dicrotophos] CAS[141-66-2] UN2783
= (E, Z)2-(dimethylcarbamoyl)-1-methylvinyldimethyl phosphate
Trade name
Dicrotophos (I, A): Bidrin, Carbicron, Ektafos
Chemical formula
C8H16NO5P
Purpose for use
Organophosphorus insecticide.
Test organisms
Oligochaeta: Eisenia fetida (ref. ID; 7012)
[Dimethoate] CAS[60-51-5] UN2783
= O,O-Dimethyl S-methylcarbamoylmethyl phosphorodithioate,
= O,O-Dimethyl-S-N-methylcarbamoylmethyl phosphorodithioate (ref. ID; 6096)
Trade name
Dimethoate (J, I, A, B): Cygon, Rogor, Perfekthiom
Chemical formula
C5H12NO3PS2
Purpose for use
Organophosphorus insecticides.
Mode of action
It is a cholinesterase inhibitor after metabolism, and it acts at the cholinergic synapses. (ref. ID; 6754)
Test organisms
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 6096)
Protozoa: Colpidium campylum (ref. ID; 6784)
Protozoa: Tetrahymena pyriformis (ref. ID; 6097)
Oligochaeta: Allolobophra chlorotica (ref. ID; 6891)
Oligochaeta: Aporrectodea caliginosa (ref. ID; 6891)
Oligochaeta: Aporrectodea rosea (ref. ID; 6891)
Oligochaeta: Eisenia andrei (ref. ID; 6891)
Oligochaeta: Eisenia fetida (ref. ID; 6891)
Oligochaeta: Enchytraeus albidus (ref. ID; 6754)
[Fenitrothion] CAS[122-14-5] UN3018
= O,O-Dimethyl O-4-nitro-m-tolyl-phosphorothioate,
= O,O-Dimethyl O-(3-methyl-4-nitrophenyl) phosphorothionate
Trade name
Fenitrothion (J, I, B): Accothion, Folithion, MEP (J Date registered 12/26/1961), Sumithion
Chemical formula
C9H12NO5PS
Purpose for use
Organophosphorus insecticide.
Toxicity
LD50 (oral): rat 250-500 mg/kg, mouse 870 mg/kg.
LD50 (oral): mouse (male) 1336 mg/kg
**Test organisms;
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 6096)
Protozoa: Colpidium campylum (ref. ID; 6784)
Rotifera: Brachionus calyciflorus (ref. ID; 127, 128)
Rotifera: Brachionus plicatilis (ref. ID; 128)
Microcosm (ref. ID; 7170)
[Fenthion]
CAS[55-38-9]
=,O,O-Dimethyl-O-(3 methyl-4 methyl thiophenyl) phosphrothionate
= O,O-Dimethyl O-4-methylthio-m-tolyl phosphrothioate
Trade name; fenthion (J, I, B): Baycid, Baytex, Lebaycid, MPP (J Date registered 11/12/1960), Queletix, Tiguvon
Chemical formula; C10H15O3PS2
Purpose for use; Organophosphorus insecticide.
Toxicity; LD50 (oral): rat (male) 190-315 mg/kg, (female) 245-615 mg/kg
mouse 92 mg/kg
Test organisms;
Protozoa: Tetrahymena pyriformis (ref. ID; 4709)
[Fonophos]
CAS[944-22-9] UN3018
= O-Ethyl S-phenyl ethylphosphonodithioate
Trade name; Fonophos (I, B): Dyfonate
Chemical formula; C10H15OPS2
Purpose for use; Organophosphorus insecticide.
Toxicity; LD50 (oral): rat (male) 7.94-17.5 mg/kg.
Test organisms;
Oligochaeta: Eisenia foetida (ref. ID; 7012)
[Malathion]
CAS[121-75-5] UN3018
= S-1,2-Bis(ethoxycarbonyl)ethyl O,O-dimethyl phosphorodithioate
= O,O-Dimethyl-1-s-1,2-di(ethoxycarbonyl)ethylphosphorodithioate) (ref. ID; 6087)
= O,O-Dimethyl-S-1,2-dicarbethoxyethyl phosphorodithioate (ref. ID; 6096)
Trade name; Malathion (J Date registered 2/7/1953, I, A, B): Cythion, Malataf-50E, Malathon, Malixol, Mercaptothion
Chemical formula; C10H19O6PS2
Chemical characteristics; log Koc = 3.2 (Zambonin st al., 2002). (ref. ID; 6699)
Purpose for use; Organophosphorus insecticide, acaricide.
Inhibiting the acetylcholinestrease (AChE) activity in the nervous system. (ref. ID; 7152)
Toxicity; LD50 (oral): rat 2800 mg/kg.
Test organisms;
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 6096)
Protozoa: Colpidium campylum (ref. ID; 6784)
Protozoa; Euglena gracilis (ref. ID; 7152)
Protozoa: Tetrahymena pyriformis (ref. ID; 3554)
Rotifera: Brachionus calyciflorus (ref. ID; 111)
Rotifera: Brachionus plicatilis (ref. ID; 718)
Rotifera: Brachionus rubens (ref. ID; 820)
Oligochaeta: Drawida willsi (ref. ID; 6068)
Oligochaeta: Eisenia foetida (ref. ID; 7012)
Oligochaeta: Lumbricus terrestris (ref. ID; 6699, 6904)
Oligochaeta: Tubifex tubifex (ref. ID; 6087)
[Malataf-50E: active ingredient Malathion 50 percent]
Test organisms;
Rotifera: Brachionus calyciflorus (ref. ID; 107)
[Monocrotophos]
CAS[6923-22-4] UN2783
= Dimethyl phosphate of 3-hydroxy-N-methyl-cis-cro = tonamide (ref. ID; 6870)
= Dimethyl (E)-1-methyl-2-(methylcarbamoyl)-vinyl phosphate
Trade name; monocrotophos (J Date registered 10/12/1979, I, B): Azodrin, Nuvacron
Chemical formula; C7H14NO5P
Purpose for use; Organophosphorus insecticide.
Test organisms;
Oligochaeta: Lampito mauritii (ref. ID; 6870)
Oligochaeta: Perionyx excavatus (ref. ID; 7085)
[Paraoxon]
CAS[311-45-5]
= Diethyl 4-nitrophenyl phosphate
= Diethyl p-nitrophenyl phosphate
Trade name; Paraoxon: E-600, Mintacol, Phosphacol
Chemical formula; C10H14NO6P
Purpose for use; Organophosphate insecticide.
Toxicity; LD50 (oral): rat 3.5 mg/kg
Test organisms;
Protozoa: Colpidium campylum (ref. ID; 6784)
Protozoa: Spirostomum teres (ref. ID; 6838)
Rotifera: Brachionus plicatilis (ref. ID; 1321)
Oligochaeta: Eisenia andrei (ref. ID; 6076)
Oligochaeta: Eisenia fetida (ref. ID; 6076)
Oligochaeta: Eisenia veneta (ref. ID; 6076)
[Parathion]
CAS[56-38-2] UN3018
= O,O-Diethyl O-4-nitrophenyl phosphorothioate
= O,O-Diethyl O-p-nitrophenyl phosphorothionate (ref. ID; 4709)
Trade name; Parathion (J Date registered 1/24/1952, Date registration annulled 2/25/1971, Date marketing stopped 6/1/1971, I, B): Bladan, ethyl parathion, Folidol, Niran, Thiolphos
Chemical formula; C10H14NO5PS
Purpose for use; Organophosphorus insecticide
Toxicity; LD50 (oral): rat (male) 13 mg/kg, (female) 3.6 mg/kg
mouse 6 mg/kg
Test organisms;
Protozoa: Prorocentrum micans Ehrenberg (ref. ID; 4185)
Protozoa: Spirostomum teres (ref. ID; 6838)
Protozoa: Tetrahymena pyriformis (ref. ID; 979, 4709)
Oligochaeta: Eisenia foetida (ref. ID; 7012)
Oligochaeta: Enchytraeus albidus (ref. ID; 5909)
Trade name
; E 605 forte
Test organisms;
Oligochaeta: Allolobophora chlorotica (ref. ID; 6066)
Oligochaeta: Aporrectodea caliginosa (ref. ID; 6066)
Oligochaeta: Aporrectodea longa (ref. ID; 6066, 6902)
Oligochaeta: Eisenia fetida (ref. ID; 6066, 6902)
Oligochaeta: Lumbricus terrestris (ref. ID; 6902)
[Parathion-ethyl]
= Ethylparathion (ref. ID; 6784)
Test organisms;
Protozoa: Colpidium campylum (ref. ID; 6784)
Protozoa: Spirostomum teres (ref. ID; 6838)
Protozoa: Tetrahymena pyriformis (ref. ID; 3554)
Oligochaeta: Eisenia andrei (ref. ID; 6831)
[Parathion-methyl] CAS[298-00-0] UN2783
= O,O-Dimethyl O-4-nitrophenyl phosphorothioate
= O,O-Dimethyl O-p-nitrophenyl phosphorothionate (ref. ID; 4709)
Trade name; Parathion-methyl (J Date registered 1/27/1952, Date registration annulled 11/9/1971, Date marketing stopped 6/1/1971, I, B): Folidol-M, methyl-Bladan, Mefos, Metacide, metaphos, methyl parathion, Metron
Chemical formula; C8H10NO5PS
Purpose for use; A non-systemic phenyl organothiophosphate insecticide, nematicide and acaricide. (ref. ID; 6701)
Toxicity; LD50 (oral): rat (male) 14 mg/kg, rat (female) 24 mg/kg, mouse 21 mg/kg
Test organisms;
Green algae (formerly including protozoa): Chlamydomonas reinhardi (ref. ID; 1319)
Protozoa: Colpidium campylum (ref. ID; 6784)
Protozoa: Spirostomum teres (ref. ID; 6838)
Protozoa: Tetrahymena pyriformis (ref. ID; 1319, 3554, 4709)
Rotifera: Asplanchna sieboldi (ref. ID; 1973)
Rotifera: Brachionus calyciflorus (ref. ID; 111, 1667, 1973)
Rotifera: Brachionus patulus (ref. ID; 3314)
Oligochaeta: Soil-dwelling community (ref. ID; 6071, 6896)
Aquatic microcosm (ref. ID; 6701)
[Phenthoate]
= O,O-Dimethyl-S-alpha-carbethoxy-benzyl phosphorodithioate
= S-alpha-Ethoxycarbonylbenzyl O,O-dimethyl phosphorodithioate
Trade name; Phenthoate (J, I, B): PAP (J Date registered 2/26/1963), Elsan
Chemical formula; C12H17O4PS2
Purpose for use; Organophosphorus insecticide.
Toxicity; LD50 (oral): mouse 350-400 mg, rat 300-400 mg.
Test organisms;
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 6096)
[Quinalphos]
CAS[13593-03-8] UN2783
= O,O-Diethyl O-quinoxalin-2-yl phosphorothioate
= O,O-Diethyl-O-2-quinoxalinyl phosphorothioate
Trade name; quinalphos (I, B): Bayrusil, Chinalphos, Diethquinalphione, Ekalux
Chemical formula; C12H15N2O3PS
Purpose for use; Organophosphorus insecticide.
Toxicity; LD50 (oral): rat 62-137 mg
Test organisms;
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 6096)
[Trichlorfon]
CAS[52-68-6]
= 2,2,2-Trichloro-1-hydroxyethylphosphonic acid dimethyl ester
= Dimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate
= O,O-Dimethyl-1-hydroxy-2,2,2-trichloroethylphosphonate (ref. ID; 6087)
Trade name; Trichlorfon (J, I, B): Chlorofos, DEP (J Date registered 5/29/1957), Dipterex, Dylox, Marifonate, Metrifornate, Nuguvon, Nevugon, Trichlorphon, Tugon
Chemical formula; C4H8Cl3O4P
Purpose for use; Organophosphorous insecticide.
Toxicity; LD50 (oral): rat (male) 630 mg/kg, (female) 560 mg/kg.
mouse 950 mg/kg
Test organisms;
Protozoa: Colpidium campylum (ref. ID; 6784)
Rotifera: Brachionus calyciflorus (ref. ID; 127, 128)
Rotifera: Brachionus plicatilis (ref. ID; 128)
Oligochaeta: Tubifex tubifex (ref. ID; 6087)