Gamma-terpinene |
![]() Last updated: 25/05/2022 |
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(Also known as: Tea tree oil extract; Oil of Melaleuca; TTO; Crithmene) |
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A major component (10-28%) of Tea tree oil which is used to control various fungal pathogens on a wide range of crops | |
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Current | |
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1920s, Tea tree oil first reported | |
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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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Approved (as Tea tree oil) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Poland/Bulgaria | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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31/08/2022 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Additional information |
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Chemical structure |
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C₁₀H₁₆ | |
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CC1=CCC(=CC1)C(C)C | |
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No data | |
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YKFLAYDHMOASIY-UHFFFAOYSA-N | |
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InChI=1S/C10H16/c1-8(2)10-6-4-9(3)5-7-10/h4,7-8H,5-6H2,1-3H3 | |
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Yes |
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Common Name | Relationship | Link |
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gamma-terpinene | - | ![]() |
General status |
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Fungicide | |
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Plant derived substance | |
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100 g/Kg | |
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Natural | |
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Tea tree oil appears to disrupt the permeability barrier of microbial cell membrane structures, causing loss of chemiosmotic control. | |
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Tea tree oil was first used in the 18th Century by Australia indiginous people as a natural remedy to treat various ailments | |
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Tea tree oil is harvested by steam extraction from the leaves and branches of the plant Melaleuca alternifolia | |
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Crop protection | |
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Various fungal pathogens including powdery mildew on fruit & vegetables and early blight on potatoes | |
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Various crops including potatoes, carrots, tomatoes, cucumbers, fruit and ornamentals | |
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Tea tree oil is suitable for use in organic farming and for IPM where approved for use in that country | |
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99-85-4 | |
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202-794-6 | |
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138.25 | |
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1-methyl-4-isopropyl-1,4-cycloheyadiene | |
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γ-terpinene | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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BM01 | |
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Clear liquid | |
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Formulations |
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Timorex | BioMor Latvija | ||||
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Tea tree oil is usually supplied as an emulsifable concentrate that is diluted and used as a foliar spray |
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8.72 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Low | ||||||||
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-31.1 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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182 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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2.95 X 1004 | Calculated | - | |||||||
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4.47 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
High | ||||||||
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Not applicable | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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No dissociation | |||||||||||
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93100 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Highly volatile | ||||||||
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1476 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Volatile | ||||||||
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Degradation |
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Soil adsorption and mobility |
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- | A3 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 3 = Unverified data of known source |
Slightly mobile | |||||||
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2886 | ||||||||||
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EU dossier - estimated | ||||||||||
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Terrestrial ecotoxicology |
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3650 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
Low | ||||||||
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Aquatic ecotoxicology |
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General |
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Low (class I) | - | - | ||||||||
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3650 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
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Health issues |
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No adverse health issues noted |
Handling issues |
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Not explosive or oxidising | |||
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Health: H304, H315, H319, H332, H335, H361 Handling: H226 Environment: H411 |
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NL (Not listed) | |||
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gamma-terpinene | ||
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Record last updated: | 25/05/2022 |
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 |