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chlorfluazuron (Ref: CGA 112913)
** PP 145 ** UC 64644 ** IKI-7899 ** Translations

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

SUMMARY

Chlorfluazuron is an insecticide that is not approved for use in the EU. It has a low aqueous solubility, is not highly volatile and, based on its physico-chemical properties it would not normally be expected to leach to groundwater. It is moderately persistent in soil systems and may persist in water under certain conditions. It has a low mammalian oral toxicity and an eye irritant. Ecotoxicological data is cant but chlorfluazuron is not highly toxic to birds or fish but is much more toxic to aquatic invertebrates.

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

Description: A chitin synthesis inhibiting insecticide used to control chewing pests

Example pests controlled: Thrips; White termites; Diamondback moth; Silverleaf whitefly

Example applications: Cotton; Vegetables; Fruit; Potatoes; Ornamentals; Tea; Tobacco

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1982, first reported; 1988, first marketed Japan

EC Regulation 1107/2009 (repealing 91/414):

Status Not approved
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Expired
EU Candidate for substitution (CfS) -
Listed in EU database Yes

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

Also used in: Australia; Argentia; Bolivia; Taiwan; China

Chemical structure: Click here for further information on the general chemical status information used on this site

Isomerism None
Chemical formula C20H9Cl3F5N3O3
Canonical SMILES C1=CC(=C(C(=C1)F)C(=O)NC(=O)NC2=CC(=C(C(=C2)Cl)OC3=C(C=C(C=N3)C(F)(F)F)Cl)Cl)F
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) UISUNVFOGSJSKD-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C20H9Cl3F5N3O3/c21-10-5-9(30-19(33)31-17(32)15-13(24)2-1-3-14(15)25)6-11(22)16(10)34-18-12(23)4-8(7-29-18)20(26,27)28/h1-7H,(H2,30,31,32,33)
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 Insecticide
Substance group Benzoylurea
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Acts as an anti-moulting agent killing larvae and pupae. Inhibitor of chitin biosynthesis, type O.
CAS RN 71422-67-8
EC number -
CIPAC number 8057
US EPA chemical code 108202
PubChem CID 91708
Molecular mass (g mol-1) 540.65
PIN (Preferred Identification Name) N-[(3,5-dichloro-4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)carbamoyl]-2,6-difluorobenzamide
IUPAC name 1-[3,5-dichloro-4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]-3-(2,6-difluorobenzoyl)urea
CAS name N-(((3,5-dichloro-4-((3-chloro-5-(trifluoromethyl)-2-pyridinyl)oxy)phenyl)amino)carbonyl)-2,6-difluorobenzamide
Other status information PAN listed Highly Hazardous Chemical
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 15
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance Plutella xylostella
Physical state White crystals
Related substances & organisms -

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
  • AgroCare
Example products using this active
  • Atabron
  • Isipron
  • Atalet
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details -


ENVIRONMENTAL FATE

for chlorfluazuron

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) 0.016 L3 Low
Solubility - In organic solvents at 20oC (mg l-1) 6.39 L3 - Hexane -
1000 L3 - n-Octanol -
4670 L3 - Xylene -
2680 L3 - Methanol -
Melting point (oC) 222.6 L3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 6.31 X 1005 Calculated -
Log P 5.8 L3 High
Bulk density (g ml-1)/Specific gravity 1.66 L3 -
Dissociation constant (pKa) at 25oC 8.1 L3 -
Note: Very weak acid
Vapour pressure at 20oC (mPa) 1.00 X 10-05 L3 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 5.41 X 10-04 L3 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index -0.62 Calculated Low 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 5.35 X 10-03 Calculated -
Note Estimated concentrations of chemicals with Koc values greater than 9995 ml g-1 are beyond the scope of the regression data used in SCI-GROW development. If there are concerns for such chemicals, a higher tier groundwater exposure assessment should be considered, regardless of the concentration returned by SCI-GROW
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated High
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) 90 L2 Moderately persistent
DT50 (lab at 20oC) - - -
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Best available data
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value 5.8 R4 -
Note Published literature RL50 range 3.1-7.9 days, 5 field and undercover grown crops, various matrices, n=5
Aqueous photolysis DT50 (days) at pH 7 Value Stable L3 -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable L3 -
Note Not sensitive to pH
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

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 - Q2 Non-mobile
Koc 20800
Notes and range Estimated
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for chlorfluazuron

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) - - -
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) > 8500 L3 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 2510 L3 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 300 L3 Cyprinidae Low
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.000908 L3 Daphnia magna High
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
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) - - -
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) - - -
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees (Apis spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 100 L3 Low
Unknown mode acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Bumblebees (Bombus spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
-
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
-
Mason bees (Osmia spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Other pollinators (1) Acute LD50 (worst case from 24 , 48 and 72 hour values - μg insect-1) - - -
Mode of exposure -
Other pollinators (2) Acute LD50 (worst case from 24 , 48 and 72 hour values - μg insect-1) - - -
Mode of exposure -
Earthworms - Acute 14 day LC50 (mg kg-1) > 1000 L3 Low
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
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

for chlorfluazuron

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) > 8500 L3 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 1000 L3 Rat -
Mammals - Inhalation LC50 (mg l-1) > 2.4 L3 Rat -
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 List II - -
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 Genotoxic Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

-

A0; B0; C0; D0; E0

-

-

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

-

-

General human health issues Maybe harmful if swallowed
Key: Genotoxicity
A: Chromosome aberration (EFSA database)
B: DNA damage/repair (EFSA database)
C: Gene mutation (EFSA database)
D: Genome mutation (EFSA database)
E: Unspecified genotoxicity type (miscellaneous data source)
0: No data
1: Positive
2: Mixed/ambiguous results
3: Negative
Key: Other
: 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 Health: H319
Environment: H400
EC Risk Classification Click here to view information omn the EU risk phrases Xi - Irritant: R36
N - Dangerous for the environment: R50
EC Safety Classification Click here to view information omn the EU safety phrases -
WHO Classification U - Unlikely to present an acute hazard
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for chlorfluazuron

Language Name
English chlorfluazuron
French chlorfluazuron
German Chlorfluazuron
Danish chlorfluazuron
Italian clorfluazuron
Spanish clorfluazuron
Greek -
Slovenian klorfluazuron
Polish chlorfluazuron
Swedish -
Hungarian -
Dutch -

Record last updated: Saturday 29 June 2019
Contact: aeru@herts.ac.uk
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