Isazofos (Ref: CGA 12223) |
![]() Last updated: 15/02/2021 |
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(Also known as: isazophos) |
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An obsolete insecticide and nematicide used on a wide variety of crops | |
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Root nematodes | |
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Turf; Bananas; Citrus fruits; Cotton; Beet crops; Maize; Rice; Sugarcane | |
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Obsolete | |
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1974, first reported |
UK regulatory status |
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Not approved | ||
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Expired | ||
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No UK approval for use |
EC Regulation 1107/2009 (repealing 91/414) |
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Not approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₉H₁₇CIN₃O₃PS | |
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CCOP(=S)(OCC)OC1=NN(C(=N1)Cl)C(C)C | |
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No data | |
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XRHGWAGWAHHFLF-UHFFFAOYSA-N | |
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InChI=1S/C9H17ClN3O3PS/c1-5-14-17(18,15-6-2)16-9-11-8(10)13(12-9)7(3)4/h7H,5-6H2,1-4H3 | |
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Yes |
General status |
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Insecticide, Nematicide | |
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Organophosphate | |
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Synthetic | |
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Acetylcholinesterase inhibitor. Contact and stomach action. | |
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42509-80-8 | |
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255-863-8 | |
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8192 | |
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295900 | |
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39223 | |
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313.74 | |
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- | |
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O-5-chloro-1-isopropyl-1H-1,2,4-triazol-3-yl O,O-diethyl phosphorothioate | |
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O-(5-chloro-1-(1-methylethyl)-1H-1,2,4-triazol-3-yl) O,O-diethyl phosphorothioate | |
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- | |
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Not applicable | |
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Not applicable | |
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1B | |
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Not applicable | |
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Bemisia tabaci | |
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Yellow liquid |
Formulations |
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Available in a variety of formulations including granules and emulsifiable concentrates |
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69 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Moderate | ||||||||
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Miscible | L3 L = Pesticide manuals and hard copy reference books / other sources Chloroform3 = Unverified data of known source |
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Miscible | L3 L = Pesticide manuals and hard copy reference books / other sources Methanol3 = Unverified data of known source |
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Miscible | L3 L = Pesticide manuals and hard copy reference books / other sources Benzene3 = Unverified data of known source |
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120 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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200 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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1.26 X 1003 | Calculated | - | |||||||
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3.1 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
High | ||||||||
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1.4 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
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11.6 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Highly volatile | ||||||||
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5.27 X 10-02 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Non-volatile | ||||||||
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Degradation |
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40 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Moderately persistent | |||||||
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34 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 3 = Unverified data of known source |
Moderately persistent | ||||||||
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7.0 | R3 R = Peer reviewed scientific publications 3 = Unverified data of known source |
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Kentucky bluegrass, blades, n=1 | ||||||||||
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11.8 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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Published literature RL₅₀ range 4.3-19.3 days, turfgrass, n=2 | ||||||||||
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Stable | W4 W = French database provided by ARVALIS-Institut du Végétal 4 = Verified data |
Stable | |||||||
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Soil adsorption and mobility |
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- | H3 H = The US ARS pesticide properties database (click here ) 3 = Unverified data of known source |
Moderately mobile | |||||||
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155 | ||||||||||
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Other literature suggests around 5-15 days | ||||||||||
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Fate indices |
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2.77 | Calculated | Transition state | ||||||||||||||||||||||||||
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2.05 X 10-01 | Calculated | - | |||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
Other known metabolites |
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5-chloro-3-hydroxy-1-isopropyl-1H-1,2,4-triazole | - | Soil (Aerobic & Anaerobic) | - | - | |||||
3,5-dichloroxyl-1-isopropyl-1H-1,2,4-triazole | - | Soil (Anaerobic) | - | - |
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75 | Q2 Q = Miscellaneous internet resources Estimated2 = Unverified data of unknown source |
Low potential | |||||||
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Not available | - | |||||||||
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> 40 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
High | ||||||||
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> 244 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Anas platyrhynchos3 = Unverified data of known source |
Moderate | ||||||||
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0.006 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Oncorhynchus mykiss4 = Verified data |
High | ||||||||
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0.5 | F2 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Daphnia magna 21 day2 = Unverified data of unknown source |
Moderate | ||||||||
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100 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Lemna gibba4 = Verified data |
Low | ||||||||
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33 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Pseudokirchneriella subcapitata 14 day3 = Unverified data of known source |
Low | ||||||||
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Toxic | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Toxic | ||||||||
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> 0.714 | F2 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Allolobophora caliginosa 7 day2 = Unverified data of unknown source |
High | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 40 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
High | ||||||||
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0.24 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat 4 hr3 = Unverified data of known source |
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Health issues |
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Toxic in contact with skin, if swallowed or inhaled |
Handling issues |
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Emits toxic fumes of hyrdogen chloride, nitrous oxides and phosphorous oxides when heated to decomposition | |||
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Health: H301, H311, H317, H330, H373 Environment: h400, H410 |
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T+ - Very toxic: R26 T - Toxic: R24/25 Xn - Harmful: R43, R48/20 N - Dangerous for the environment: R50, R53 |
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S1/2, S28, S36/37, S38, S45, S59, S60, S61 | |||
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Ib (Highly hazardous / Highly hazardous) | |||
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isazofos | ||
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isazofos | ||
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Isazofos | ||
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isazofos | ||
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isazofos | ||
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isazofos | ||
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izazofos | ||
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Record last updated: | 15/02/2021 |
Contact: | aeru@herts.ac.uk |
Please cite as: | Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |