Dicyclopentadiene |
![]() Last updated: 12/01/2021 |
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(Also known as: cyclopentadiene dimer; DCPD) |
SUMMARY |
Dicyclopentadiene is manufacturered from high temperature cracking of petroleum fractions in an ethylene manufacturing process. It is used in the manufacturer of some pesticides, as a grass growth regulator and, in some instances, as a mammal repellent. It has a low aqueous solubility, is highly volatile and flammable, and may be environmentally persistent. It is moderately toxic to mammals via ingestion but more so if the vapour is inhaled. It may cause chemical burns in contact with the skin and is a recognised irritant. It is moderately toxic to many animal and plant species.. |
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An unclassified plant growth regulator, pesticide intermediate and animal repellent | |
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Large mammals including dogs, cats, rats, rabbits, hares, deer; Grass growth | |
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Grass, Lawns, Turf | |
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Obsolete | |
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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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A chiral molecule | |
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C₁₀H₁₂ | |
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C1C=CC2C1C3CC2C=C3 | |
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C\2=C\C3C1/C=C\C(C1)C3C/2 | |
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HECLRDQVFMWTQS-UHFFFAOYSA-N | |
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InChI=1S/C14H18N6O7S/c1-5-27-12(21)8-7-15-20(2)11(8)28(23,24)19-14(22)18-13-16-9(25-3)6-10(17-13)26-4/h6-7H,5H2,1-4H3,(H2,16,17,18,19,22) | |
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Yes |
General status |
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Plant growth regulator, Repellent | |
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Hydrocarbon | |
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Synthetic | |
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Various routes, acts as a repellent via odour but is also a stomach and vapour toxin | |
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77-73-6 | |
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201-052-9 | |
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8103 | |
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6492 | |
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132.20 | |
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3a,4,7,7a-tetrahydro-4,7-methano-1H-indene | |
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dicyclopentadiene | |
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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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White cyrstalline solid at room temperature in its pure form and has a characteristic odour. Commercial products may be a colourless liquid. |
Formulations |
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Usually supplied as impregnated strips for tree use or as a solublecontrate for use as an aqueous spray |
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26.5 | T4 T = UN EPFA database 4 = Verified data |
Low | ||||||||
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33.6 | T4 T = UN EPFA database 4 = Verified data |
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6.03 X 1002 | Calculated | - | |||||||
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2.78 | T4 T = UN EPFA database 4 = Verified data |
Moderate | ||||||||
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0.977 | T4 T = UN EPFA database 4 = Verified data |
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1.3 X 1006 | T4 T = UN EPFA database 4 = Verified data |
Highly volatile | ||||||||
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6.38 X 1003 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
Volatile | ||||||||
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Degradation |
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2000 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Very persistent | |||||||
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2000 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Very persistent | ||||||||
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Other sources: DT₅₀ 4-7 years | ||||||||||
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Stable | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Stable | |||||||
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Stable | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Stable | |||||||
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Soil adsorption and mobility |
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- | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
Slightly mobile | |||||||
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1478 | ||||||||||
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Estimated | ||||||||||
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Fate indices |
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2.74 | Calculated | Transition state | ||||||||||||||||||||||||||
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2.07 X 10-01 | Calculated | - | |||||||||||||||||||||||||
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High | Calculated | - | ||||||||||||||||||||||||||
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Slightly mobile | Calculated | - |
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221 | Q3 Q = Miscellaneous internet resources Whole fish3 = Unverified data of known source |
Threshold for concern | |||||||
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Not available | - | |||||||||
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750 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Moderate | ||||||||
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1010 | V1 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Unknown species1 = Estimated data with little or no verification |
Moderate | ||||||||
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15.9 | 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 |
Moderate | ||||||||
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10.5 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Daphnia magna4 = Verified data |
Moderate | ||||||||
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Non-toxic | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Non-toxic | ||||||||
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General |
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High (class III) | - | - | ||||||||
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750 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Moderate | ||||||||
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5080 | Q3 Q = Miscellaneous internet resources Rat3 = Unverified data of known source |
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1.0 | Q3 Q = Miscellaneous internet resources Rat 4 hr3 = Unverified data of known source |
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Low risk to Europeans as no longer approved for use | |||||||||
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Workers may become exposed via inhalation, skin absorption and ingestion | ||||||||||
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Health issues |
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Moderately toxic Ingestion may damage nervous system and/or liver and kidney damage May cause chemical burns in contact with tissue, |
Handling issues |
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Mixtures of the vapour with air are explosive May react with oxygen Flammable |
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Health: H302 | |||
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Xn - Harmful: R20/22 Xi - Irritant: R36/37/38 H - Handling risks: F11 N - Dangerous for the environment: R51, R53 |
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S2, S36/37, S61 | |||
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NL (Not listed) | |||
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dicyclopentadiene | ||
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dicyclopentadiène | ||
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Dicyclopentadien | ||
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dicyclopentadien | ||
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diciclopentadiene | ||
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diciclopentadiene | ||
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dicyklopentadien | ||
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Record last updated: | 12/01/2021 |
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 |