1,4-dimethylnaphthalene |
![]() Last updated: 19/02/2021 |
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(Also known as: 1,4-DMN; DMN) |
SUMMARY |
1,4-dimethylnaphthalene is a growth inhibitor used on potatoes awaiting EU approval for use. It has a very low aqueous solubility and is highly volatile. |
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Substance used to enhance dormancy asnd retard sprouting in harvested potatoes | |
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Sprout development | |
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Potatoes | |
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Current | |
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UK regulatory status |
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Approved | ||
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30/06/2024 | ||
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None |
EC Regulation 1107/2009 (repealing 91/414) |
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Approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Netherlands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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30/06/2024 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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No | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₁₂H₁₂ | |
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CC1=CC=C(C2=CC=CC=C12)C | |
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No data | |
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APQSQLNWAIULLK-UHFFFAOYSA-N | |
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InChI=1S/C12H12/c1-9-7-8-10(2)12-6-4-3-5-11(9)12/h3-8H,1-2H3 | |
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Yes |
General status |
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Growth inhibitor | |
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Unclassified | |
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>980 g kg⁻¹ | |
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EU dossier - none declared | |
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Natural | |
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Mode of action is unclear | |
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571-58-4 | |
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209-335-9 | |
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822 | |
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055802 | |
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11304 | |
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156.23 | |
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1,4-dimethylnaphthalene | |
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1,4-dimethylnaphthalene | |
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Possible groundwater contaminant | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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Pale yellow liquid |
Formulations |
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Formulated for hot dipping or cold fogging harvested potatoes |
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5.1 | 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 |
Low | ||||||||
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250000 | 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 ) Methanol5 = Verified data used for regulatory purposes |
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250000 | 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 ) Ethyl acetate5 = Verified data used for regulatory purposes |
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250000 | 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 ) Acetone5 = Verified data used for regulatory purposes |
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239000 | 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 ) n-Heptane5 = Verified data used for regulatory purposes |
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1.0 | 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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264 | 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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122 | 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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2.34 X 1004 | Calculated | - | |||||||
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4.37 | 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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2500 | 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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76.7 | 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 |
Moderately volatile | ||||||||
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Neutral: 289nm=7250, 300nm=5110 Acidic: 289nm=7330, 299nm=5180 Basic: 289nm=7340, 299nm=5210 |
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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40.7 | 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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Degradation |
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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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Other known metabolites |
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1,4-dimethylnaphthol | 1,4-DMN metabolite 21 | Plants; Rat | - | - | |||||
4-methyl-1-naphtoic acid | - | Poultry; Animal | - | - | |||||
glycine conjugate | - | Animal | - | - |
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5751 | 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 potential | |||||||
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2730 | 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 ) Rat5 = Verified data used for regulatory purposes |
Low | ||||||||
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0.67 | 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 ) Oncorhnchus mykiss5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.09 | 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 ) Oncorhnchus mykiss5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.54 | 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 ) Daphnia magna5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.16 | 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 ) Daphnia magna5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.15 | 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 ) Lemna gibba5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.62 | 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 ) Pseudokirchneriella subcapitata5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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2730 | 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 ) Rat5 = Verified data used for regulatory purposes |
Low | ||||||||
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2000 | 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 ) Rat5 = Verified data used for regulatory purposes |
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> 4.16 | 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 ) Rat5 = Verified data used for regulatory purposes |
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0.1 | 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 ) Rat SF=1005 = Verified data used for regulatory purposes |
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None allocated | 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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0.32 | 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 ) Rat SF=1005 = Verified data used for regulatory purposes |
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3 | 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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Acceptable for proposed uses | |||||||||
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Acceptable for proposed uses | ||||||||||
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Health issues |
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No further information available |
Handling issues |
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Not oxidising or explosive | |||
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Xi - Irritant: R36 N - Dangerous for the environment: R50, R53 |
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NL (Not listed) | |||
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1,4-dimethylnaphthalene | ||
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Record last updated: | 19/02/2021 |
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 |