Tecnazene |
![]() Last updated: 16/03/2021 |
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(Also known as: TCN; TCNB; folosan) |
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A fungicide used to control dry rot and botrytis and a potato sprout suppressant | |
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Sprout formation; Dry rot | |
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Potatoes; Lettuce; Tomatoes; Some ornamentals | |
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Current | |
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circa 1946 |
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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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₆HCl₄NO₂ | |
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C1=C(C(=C(C(=C1Cl)Cl)[N+](=O)[O-])Cl)Cl | |
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No data | |
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XQTLDIFVVHJORV-UHFFFAOYSA-N | |
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InChI=1S/C6HCl4NO2/c7-2-1-3(8)5(10)6(4(2)9)11(12)13/h1H | |
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Yes |
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Common Name | Relationship | Link |
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tecnazene | - | ![]() |
General status |
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Fungicide, Plant growth regulator | |
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Chlorophenyl | |
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Synthetic | |
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Protective and curative action. Acts by distrupting membrane structure and function. Lipid peroxidation inhibitor. | |
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117-18-0 | |
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204-178-2 | |
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65 | |
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055201 | |
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8330 | |
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260.89 | |
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1,2,4,5-tetrachloro-3-nitrobenzene | |
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1,2,4,5-tetrachloro-3-nitrobenzene | |
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1,2,4,5-tetrachloro-3-nitrobenzene | |
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Chemical subject to PIC regulations | |
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UK non-statutory standard for the protection of aquatic life: freshwater and saltwater annual average; 1.0 µg l⁻¹, max acceptable conc: 10 µg l⁻¹ | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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14 | |
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Colourless to pale yellow crystals |
Formulations |
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Usually formulated as dusts, granules or smokes |
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1.3 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Low | ||||||||
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40000 | L3 L = Pesticide manuals and hard copy reference books / other sources Ethanol3 = Unverified data of known source |
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99 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Decomposes before boiling | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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304 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Not expected to self ignite; Not highly flammable | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
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2.51 X 1004 | Calculated | - | |||||||
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4.4 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
High | ||||||||
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1.85 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
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27 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Highly volatile | ||||||||
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3.70 X 10-05 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Non-volatile | ||||||||
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Degradation |
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11 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Non-persistent | |||||||
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11 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Non-persistent | ||||||||
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Soil degradation fast under aerobic conditions | ||||||||||
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Stable | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Stable | |||||||
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94 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Moderately fast | ||||||||
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Soil adsorption and mobility |
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- | - | Non-mobile | |||||||
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12662 | ||||||||||
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B4 | ||||||||||
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Fate indices |
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-0.11 | Calculated | Low leachability | ||||||||||||||||||||||||||
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5.35 X 10-03 | Calculated | - | |||||||||||||||||||||||||
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Estimated concentrations of chemicals with Koc values greater than 9995 ml g⁻¹ are beyond the scope of the regression data used in SCI-GROW development. If there are concerns for such chemicals, a higher tier groundwater exposure assessment should be considered, regardless of the concentration returned by SCI-GROW | ||||||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Non-mobile | Calculated | - |
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3000 | Q2 Q = Miscellaneous internet resources Estimated2 = Unverified data of unknown source |
Threshold for concern | |||||||
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Not available | - | |||||||||
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1256 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) Rat5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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4.5 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) Rat5 = Verified data used for regulatory purposes |
High | |||||||
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500 | - | |||||||||
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0.37 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) Oncorhynchus mykiss5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.047 | Q2 Q = Miscellaneous internet resources Oncorhynchus mykiss2 = Unverified data of unknown source |
Moderate | ||||||||
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0.2 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) Daphnia magna5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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50 | L1 L = Pesticide manuals and hard copy reference books / other sources 1 = Estimated data with little or no verification |
Moderate | ||||||||
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1000 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) Eisenia foetida5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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1256 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) Rat5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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2000 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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2.74 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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0.02 | F5 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) JMPR 20025 = Verified data used for regulatory purposes |
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Consumer exposure should be low or non-existent since as substance is rarely used | |||||||||
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Occupational exposure should be low or non-existent since as substance is rarely used | ||||||||||
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Health issues |
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May cause dermal sensitivity |
Handling issues |
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IMDG Transport Code is usually 9 | |||
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Health: H302, H317 Environment: H400, H410 |
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Xn - Harmful: R22, R43 N - Dangerous for the environment: R50, R53 |
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S2, S24, S37, S60, S61 | |||
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U (Unlikely to present an acute hazard) | |||
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Usually 3077 | |||
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Packaging Group III (minor danger) |
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tecnazene | ||
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tecnazène | ||
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Tecnazen | ||
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tecnazen | ||
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tecnazene | ||
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tecnazene | ||
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tecnazene | ||
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teknazen | ||
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tecnazeen |
Record last updated: | 16/03/2021 |
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 |