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3,5,6-trichloro-2-pyridinol
** TCP ** pyridinol ** trichloropyridinol ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

GENERAL INFORMATION Click here for an explantaion of the general chemical status information

Description: Chemical transformation product

Availability status: Not applicable

Introduction & key dates: Not applicable

EC Regulation 1107/2009 (repealing 91/414):
Status Not applicable
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Not applicable
EU Candidate for substitution (CfS) Not applicable
Listed in EU database No

Approved for use () or known to be used () in the following European countries: Click to access a note on the approvals information on this site

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C5H2Cl3NO
Canonical SMILES C1=C(C(=O)NC(=C1Cl)Cl)Cl
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) WCYYAQFQZQEUEN-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C5H2Cl3NO/c6-2-1-3(7)5(10)9-4(2)8/h1H,(H,9,10)
2D structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Metabolite
Metabolite Type Soil; Rat; Plant; Surface water; Sediment, Groundwater, Air
Substance group Unclassified
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Not applicable
CAS RN 6515-38-4
EC number 229-405-2
CIPAC number -
US EPA chemical code 206900
PubChem CID -
Molecular mass (g mol-1) 198.43
PIN (Preferred Identification Name) -
IUPAC name 3,5,6-trichloro-2(1H)-pyridinone
CAS name 3,5,6-trichloro-2-pyridinol
Other status information -
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state -
Related substances & organisms -

Can be a metabolite of:
Parent Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
triclopyr Soil   0.331   Major fraction; Relevant
chlorpyrifos Soil   0.602   Major fraction, Relevant
chlorpyrifos-methyl Soil   0.879   Major fraction, Relevant

Formulations:
Property Click here for information on the general product and branding information used on this site Value
Example manufacturers & suppliers of products using this active now or historically
  • Not applicable
Example products using this active -
UK LERAP status Not applicable
Formulation and application details -


ENVIRONMENTAL FATE

Property Click here for information on the parameters used to describe environmental fate on this site Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with fate data Interpretation Click here for information on the way in which we interpret environmental fate data
Solubility - In water at 20oC (mg l-1) 80.9 V3 - @ 25 DegC Moderate
Solubility - In organic solvents at 20oC (mg l-1) - - -
Melting point (oC) - - -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 1.62 X 1003 Calculated -
Log P 3.21 V3 - @ 25 DegC High
Bulk density (g ml-1)/Specific gravity 1.67 Q2 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 137.32 V3 - @ 25 DegC Highly volatile
Henry's law constant at 25oC (Pa m3 mol-1) 1.10 L3 Moderately volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 4.88 Calculated High leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Click here for a note on the limitations of the SCI-GROW index Value 4.35 X 10+00 Calculated -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated Medium
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

Degradation:
Property Click here for information on the parameters used to describe substance degradation Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with degradation data Interpretation Click here for information on the way in which we interpret substance degradation data
General biodegradability -
Soil degradation (days) (aerobic) DT50 (typical) 226 A5 Persistent
DT50 (lab at 20oC) 226 A5 Persistent
DT50 (field) 75.3 A5 Moderately persistent
DT90 (lab at 20oC) 288 A5 -
DT90 (field) 250 A4 -
DT50 modelling endpoint 166.1 A5 worst case field study -
Note EU 2017 dossier lab studies DT50 range 7.2 - >1000 days, DT90 range 28.4 - >1000 days; Field studies range 15.59-166.1 days, DT90 range 51.8-552 days, Soils=3
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value - - -
Note -
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value - - -
Note -
Water-sediment DT50 (days) 19.8 A5 Fast
Water phase only DT50 (days) 23 A5 Slow

Soil adsorption and mobility:
Property Click here for information on the parameters used to describe substance adsorption and mobility Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with adsorption and mobility data Interpretation Click here for information on the way in which we interpret substance adsorption and mobility
Linear Kd - A5 Moderately mobile
Koc 149
Notes and range EU dossier Koc range 77-242 mL/g
Freundlich Kf 2.01 A5 Moderately mobile
Kfoc 84.5
1/n 0.81
Notes and range EU 2017 dossier Kf range 0.6-6.4 mL/g, Kfoc range 14-194 mL/g, 1/n range 0.75-0.89, Soils=8
pH sensitivity None


ECOTOXICOLOGY

Property Click here for information on the parameters used to describe substance ecotoxicology Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with ecotoxicology data Interpretation Click here for information on the way in which we interpret substance ecotoxicology
Bio-concentration factor BCF (l kg-1) 3.2 A5 Whole Fish Low potential
CT50 (days) 1 -
Mammals - Acute oral LD50 (mg kg-1) 3129 A5 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 2000 A5 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 12.6 A5 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) 0.081 A5 Oncorhynchus mykiss Moderate
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 10.4 A5 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.029 A5 Daphnia magna Moderate
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) 8.75 A5 Lemna gibba Moderate
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.61 A5 Pseudokirchneriella subcapitata Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) 37.9 A5 Apis mellifera Moderate
Oral acute 48 hour LD50 (μg bee-1) 80.7 A5 Apis mellifera Moderate
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) 9.8 A5 Eisenia foetida High
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) 4.6 A5 Eisenia foetida Moderate
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 - - -
% Effect - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

General:
Property Click here for information on the parameters used to describe human health and protection issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with human health and protection data Interpretation Click here for information on the way in which we interpret human health and protection data
Threshold of Toxicological Concern (Cramer Class) Click here for a note on the limitations of the Cramer class High (class III) - -
Mammals - Acute oral LD50 (mg kg-1) 3129 A5 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 V3 Rat -
Mammals - Inhalation LC50 (mg l-1) - - -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public -
Occupational -
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

Health issues:
Carcinogen Mutagen Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

-

-

-

-

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

-

-

-

General human health issues No further information available

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data found

Handling issues:
Property Click here for information on the parameters used to describe substance handling issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with data on handling issues Interpretation Click here for information on the way in which we interpret data on handling issues
General Click here for a description of the International Maritime Dangerous Goods (IMDG) codes No information available
CLP classification 2013 -
EC Risk Classification Click here to view information omn the EU risk phrases -
EC Safety Classification Click here to view information omn the EU safety phrases -
WHO Classification NL - Not listed
US EPA Classification (formulation) Not applicable - -
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

Language Name
English 3,5,6-trichloro-2-pyridinol
French -
German -
Danish -
Italian -
Spanish -
Greek -
Slovenian 3,5,6-trikloro-2-piridinol
Polish 3,5,6-trichloro-2-pirydynol
Swedish -
Hungarian -
Dutch -

Record last updated: Saturday 31 March 2018
Contact: aeru@herts.ac.uk