Leptophos (Ref: OMS 1438 ) |
![]() Last updated: 04/03/2020 |
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(Also known as: VCS 506; MBCP) |
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An obolete insecticide that is effective against lepidoptera and other insect pests | |
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Prodenia litura; Grasshoppers; Fleas; Beetles; Aphids; Thrips | |
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Cereals; Cotton; Lawns; Rice; Sugarcane; Sugarbeet; Lettuce; Tomatoes; Tobacco | |
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Obsolete | |
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1969, first reported |
UK regulatory status |
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Not approved | ||
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Not applicable | ||
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No UK approval for use |
EC Regulation 1107/2009 (repealing 91/414) |
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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Leptophos is a chiral molecule. The technical material is an isomeric mixture. | |
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C₁₃H₁₀BrCl₂O₂PS | |
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COP(=S)(C1=CC=CC=C1)OC2=CC(=C(C=C2Cl)Br)Cl | |
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No data | |
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CVRALZAYCYJELZ-UHFFFAOYSA-N | |
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InChI=1S/C13H10BrCl2O2PS/c1-17-19(20,9-5-3-2-4-6-9)18-13-8-11(15)10(14)7-12(13)16/h2-8H,1H3 | |
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Yes |
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Common Name | Relationship | Link |
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leptophos | - | ![]() |
General status |
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Insecticide | |
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Organophosphate | |
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Approx 85% pure | |
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Synthetic | |
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Cholinesterase inhibitor. Non-systemic. | |
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21609-90-5 | |
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244-472-8 | |
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525300 | |
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30709 | |
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412.07 | |
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(E)-[O-(4-bromo-2,5-dichlorophenyl) O-methyl phenylphosphonothioate] | |
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(RS)-(O-4-bromo-2,5-dichlorophenyl O-methyl phenylphosphonothioate) | |
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O-(4-bromo-2,5-dichlorophenyl) O-methyl phenylphosphonothioate | |
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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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Myzus persicae, Plutella xylostella, Spodoptera littoralis, Pectinophora gossypiella | |
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White solid |
Formulations |
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Common formulations include emulsifiable concentrates, wettable powders and granules |
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2.4 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
Low | ||||||||
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1300000 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) benzene4 = Verified data |
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470 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Acetone4 = Verified data |
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142000 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Cyclohexane4 = Verified data |
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70.4 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
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Decomposes before boiling | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
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2.04 X 1006 | Calculated | - | |||||||
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6.31 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
High | ||||||||
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1.53 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) 3 = Unverified data of known source |
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1.999 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
Low volatility | ||||||||
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Degradation |
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Very persistent | ||||||||||
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6.7 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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Published literature RL₅₀ range 3.0-17.0 days, 9 field grown crops, various matrices, n=9 | ||||||||||
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38.5 | R4 R = Peer reviewed scientific publications 4 = Verified data |
Moderately persistent | |||||||
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pH sensitive: 245 days at pH 6, 38.5 days at pH 7, 16 days at pH 8 | ||||||||||
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Soil adsorption and mobility |
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- | R3 R = Peer reviewed scientific publications 3 = Unverified data of known source |
Non-mobile | |||||||
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33000 | ||||||||||
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Koc range 1175-117490 mL g⁻¹ | ||||||||||
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Fate indices |
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6058 | R3 R = Peer reviewed scientific publications 3 = Unverified data of known source |
High potential | |||||||
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not available | - | |||||||||
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43.0 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rat4 = Verified data |
High | ||||||||
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> 1500 | CA4 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Coturnix japonica4 = Verified data |
Moderate | ||||||||
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> 0.011 | 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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0.002 | R4 R = Peer reviewed scientific publications Daphnia magna4 = Verified data |
High | ||||||||
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> 3400 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Lumbricus terrestris4 = Verified data |
Low | ||||||||
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General |
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High (class III) | - | - | ||||||||
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43.0 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rat4 = Verified data |
High | ||||||||
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800 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rabbit4 = Verified data |
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2.7 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rat4 = Verified data |
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List I | - | - | ||||||||
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May occur through dermal contact and inhalation of dust and sprays | ||||||||||
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Health issues |
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Highly toxic |
Handling issues |
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Avoid generation of dust IMDG Transport Code is 6.1 |
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T - Toxic: R25 Xn - Harmful: R21, R39 N - Dangerous for the environment: R50/53 |
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Ia (Extremely hazardous) | |||
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2783 | |||
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leptophos | ||
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Record last updated: | 04/03/2020 |
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 |