Pentachlorophenol |
![]() Last updated: 25/02/2021 |
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(Also known as: PCP; penchlorol; chlorophen) |
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A multi-action pesticide used to control wood boring insects, wood fungal rots and as a general herbicide | |
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Defoliant; Wood-damaging insects including termites; Timber rot | |
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Cotton; Utility wood structures such as railway sleepers, utility poles, fencing | |
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Unknown | |
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circa 1936 |
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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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₆HCl₅O | |
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C1(=C(C(=C(C(=C1Cl)Cl)Cl)Cl)Cl)O | |
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No data | |
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IZUPBVBPLAPZRR-UHFFFAOYSA-N | |
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InChI=1S/C6HCl5O/c7-1-2(8)4(10)6(12)5(11)3(1)9/h12H | |
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Yes |
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Common Name | Relationship | Link |
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pentachlorophenol | - | ![]() |
General status |
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Insecticide, Herbicide, Fungicide, Molluscicide, Plant growth regulator, Wood preservative | |
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Organochlorine | |
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Synthetic | |
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Accelerates aerobic metabolism and increases heat production | |
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87-86-5 | |
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201-778-6 | |
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106 | |
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063001 | |
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992 | |
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266.34 | |
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pentachlorophenol | |
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pentachlorophenol | |
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WFD priority substance; Subject to PIC regulations; Regulated POP; Severe Marine Pollutant; Rotterdam Convention (Class Ib); UK non-statutory standard for dry soil: <0.06 mg/Kg | |
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EU Directive 2008/105/EC EQS surface waters: annual average 0.4 µg l⁻¹; max measured 1.0 µg l⁻¹ UK statutory standard for the protection of aquatic life: annual average for inland, coastal and territorial waters: 2 µg l⁻¹ |
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Not known | |
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Not known | |
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2A | |
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Not known | |
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Colourless crystals |
Formulations |
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1000 | P4 P = Other governments and regulators 4 = Verified data |
High | ||||||||
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500000 | P4 P = Other governments and regulators Acetone4 = Verified data |
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150000 | P4 P = Other governments and regulators Benzene4 = Verified data |
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1800000 | P4 P = Other governments and regulators Methanol4 = Verified data |
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12000000 | P4 P = Other governments and regulators Ethanol4 = Verified data |
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191 | 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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309 | 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 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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2.09 X 1003 | Calculated | - | |||||||
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3.32 | 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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1.99 | 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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4.73 | DW4 DW = Don Wauchope personal database for Pka data: Wauchope, R. D. and Edwards, J. Dissociation constants for pesticide active ingredients: a database and comparison with predicted values. MS in preparation 4 = Verified data |
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Weak acid | |||||||||||
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16000 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Highly volatile | ||||||||
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4.30 X 10-01 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Moderately volatile | ||||||||
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Degradation |
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63 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Moderately persistent | |||||||
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48 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 3 = Unverified data of known source |
Moderately persistent | ||||||||
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Data DT₅₀ range 46-63 days | ||||||||||
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0.03 | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) 5 = Verified data used for regulatory purposes |
Fast | |||||||
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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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Soil adsorption and mobility |
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- | G3 G = Extension Toxicology network database EXTOXNET (click here ) 3 = Unverified data of known source |
Mobile | |||||||
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30 | ||||||||||
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Fate indices |
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4.24 | Calculated | High leachability | ||||||||||||||||||||||||||
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1.43 X 1000 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Mobile | Calculated | - |
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216 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) (Whole body Other literature values Log BCF range 1.2-3.2 (R3))3 = Unverified data of known source |
Threshold for concern | |||||||
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Not available | - | |||||||||
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80 | 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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3.9 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
High | |||||||
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> 380 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Anas platyrhynchos4 = Verified data |
Moderate | ||||||||
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> 0.17 | L3 L = Pesticide manuals and hard copy reference books / other sources Oncorhynchus mykiss3 = Unverified data of known source |
Moderate | ||||||||
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0.05 | P4 P = Other governments and regulators Carassius auratus4 = Verified data |
Moderate | ||||||||
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> 0.45 | 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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> 0.18 | P4 P = Other governments and regulators Daphnia magna4 = Verified data |
Moderate | ||||||||
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0.11 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Chironomus riparius 2 day3 = Unverified data of known source |
Moderate | ||||||||
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0.12 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Lemna gibba3 = Unverified data of known source |
Moderate | ||||||||
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0.08 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Scenedesmus quadricauda4 = Verified data |
Moderate | ||||||||
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> 0.4 | P3 P = Other governments and regulators Chlorella pyrenoidosa3 = Unverified data of known source |
Moderate | ||||||||
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48 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
Moderate | |||||||
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48 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Eisenia foetida4 = Verified data |
Moderate | ||||||||
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10 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Eisenia foetida4 = Verified data |
Moderate | ||||||||
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64.0 | 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 ) Folsomia candida 33d5 = Verified data used for regulatory purposes |
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General |
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High (class III) | - | - | ||||||||
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80 | 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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105 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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0.355 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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List I; List II | - | - | ||||||||
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Readily absorbed through the skin | ||||||||||
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Non-statutory WHO drinking water guideline 0.009 mg l⁻¹ | B5 B = UK CRD and ACP evaluation documents / and other Defra (UK) documents (click here ) UK EA QS database 20185 = Verified data used for regulatory purposes |
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Health issues |
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Liver and thyroid toxicant Heart failure may occur following acute inhalation Bioaccumulates IARC group 2B carcinogen; USEPA - probable human carcinogen Endocrine issues - Weak estrogenic and anti-androgenic affect |
Handling issues |
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Prevent generation of dust | |||
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Health: H301, H311, H315, H319, H330, H335, H351 Environment: H400, H410 |
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Carcinogen category 3: R40 T+ - Very toxic: R26 T - Toxic: R24/25 Xi - Irritant: R36/37/38 N - Dangerous for the environment: R50, R53 |
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S1/2, S22, S36/37, S45, S52, S60, S61 | |||
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Ib (Highly hazardous / Highly hazardous) | |||
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3155 | |||
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pentachlorophenol | ||
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pentachlorophénol | ||
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Pentachlorphenol | ||
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pentachlorphenol | ||
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pentaclorofenolo | ||
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pentaclorofenato | ||
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pentachlorofenol | ||
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pentachloorfenol |
Record last updated: | 25/02/2021 |
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 |