Isobenzan (Ref: ENT 25545) |
Last updated: 14/03/2024 |
(Also known as: telodrin; omtan; SD 4402; WL 1650; isobenzane) |
SUMMARY |
Data alerts |
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
Environmental fate | Ecotoxicity | Human health |
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Warning: Significant data are missing |
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An obsolete cyclodiene soil-applied pesticide that was only manufactured briefly then withdrawn due to environmental and human health risks | |
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Weevils | |
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Root crops; Tobacco; Rice; Cereals | |
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Considered obsolete but may be available in some countries | |
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1958, first manufacturered in Netherlands |
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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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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No | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Additional information |
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Chemical structure |
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Isobenzan is a chiral molecule. | |
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C₉H₄Cl₈O | |
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C12C(C(OC1Cl)Cl)C3(C(=C(C2(C3(Cl)Cl)Cl)Cl)Cl)Cl | |
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No data | |
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LRWHHSXTGZSMSN-UHFFFAOYSA-N | |
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InChI=1S/C9H4Cl8O/c10-3-4(11)8(15)2-1(5(12)18-6(2)13)7(3,14)9(8,16)17/h1-2,5-6H | |
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Yes |
General status |
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Insecticide | |
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Organochloride insecticide; Cyclodiene insecticide | |
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Synthetic | |
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Broad-spectrum with contact and stomach activity. Thought to over stimulate the nervous system. GABA-gated chloride channel antagonist. | |
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297-78-9 | |
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206-045-4 | |
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162 | |
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058501 | |
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9271 | |
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602-053-00-0 | |
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411.75 | |
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(1E,3E,3aE,4E,7E,7a?E)-1,3,4,5,6,7,8,8-octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methano-2-benzofuran | |
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1,3,4,5,6,7,8,8-octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran | |
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1,3,4,5,6,7,8,8-octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran | |
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Marine Pollutant | |
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Not applicable | |
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Not applicable | |
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2A | |
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Not applicable | |
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Delia antiqua, Hypera postica, Plutella xylostella, Delia brassicae, Phthorimaea operculella, psilia rosae | |
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White to light brown crystalline powder |
Formulations |
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0.095 | V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) at 25 °C3 = Unverified data of known source |
Low | ||||||||
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121 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) 3 = Unverified data of known source |
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3.24 X 1004 | Calculated | - | |||||||
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4.51 | V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) 3 = Unverified data of known source |
High | ||||||||
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Likely to be soluble | Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source |
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Based on chemical group | Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source |
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Degradation |
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30 | Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source |
Moderately persistent | |||||||
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30 | Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source |
Moderately persistent | ||||||||
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2000 | Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source |
Very persistent | ||||||||
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Thought to persist in the soil for up to 7 years in the field | ||||||||||
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As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below. | ||||||||||
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Soil adsorption and mobility |
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Fate indices |
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Cannot be calculated | - | - | |||||||||||||||||||||||||
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Known metabolites |
None
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Terrestrial ecotoxicology |
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4.8 | V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) Rat3 = Unverified data of known source |
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4.21 | V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) Coturnix japonica3 = Unverified data of known source |
High | ||||||||
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Aquatic ecotoxicology |
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0.002 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) Cyprinodon variegatus marine species4 = Verified data |
High | ||||||||
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0.008 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) Daphnia magna4 = Verified data |
High | ||||||||
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0.08 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) Haematococcus pluvialis3 = Unverified data of known source |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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4.8 | V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) Rat3 = Unverified data of known source |
High | ||||||||
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5.0 | V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) Rat3 = Unverified data of known source |
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High risk | ||||||||||
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Health issues |
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Highly toxic in contact with skin or if swallowed Readily absorbed by gastrointestinal tract May cause convulsions if ingested CNS toxicant |
Handling issues |
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Will emit chlorine when heated Not expected to auto-ignite; Not highly flammable |
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Health: H300, H310 Environment: H400 |
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Not classified: Obsolete (Not classified: Obsolete) | |||
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isobenzan | ||
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isobenzan | ||
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Isobenzan | ||
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isobenzan | ||
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Record last updated: | 14/03/2024 |
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 |