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chlorfenson (Ref: K 6451)
** chlorfénizon ** ephirsulfonate ** ovatron ** ovex ** chlorfenizon ** Translations

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

SUMMARY

Chlorfenson is an obsolete insecticide. It has a low aqueous solubility and a low volatility. Data on its persistence in soil and water systems is missing. It has a low mammalian oral toxicity and throught to be a skin irritant. data on ecotoxicology is scant but it does appear to have a low toxicity to birds and a moderate toxicity to fish.

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

Description: A non-selective, diphenyl obsolete acaricide

Example pests controlled: Spider mites

Example applications: Fruit including citrus; Cotton; Hops; Vegetables; Ornamentals

Efficacy & activity: -

Availability status: Obsolete

Introduction & key dates: 1949, first reported

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) Not applicable
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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism None
Chemical formula C12H8Cl2O3S
Canonical SMILES C1=CC(=CC=C1OS(=O)(=O)C2=CC=C(C=C2)Cl)Cl
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) RZXLPPRPEOUENN-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C12H8Cl2O3S/c13-9-1-5-11(6-2-9)17-18(15,16)12-7-3-10(14)4-8-12/h1-8H
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 Acaricide, Miticide, Insecticide
Substance group Bridged diphenyl
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Acts by inhibiting oxidative phosphorylation. Contact and stomach action and long residual ovicidal activity.
CAS RN 80-33-1
EC number 201-270-4
CIPAC number 53
US EPA chemical code 020201
PubChem CID 6635
Molecular mass (g mol-1) 303.2
PIN (Preferred Identification Name) 4-chlorophenyl 4-chlorobenzene-1-sulfonate
IUPAC name 4-chlorophenyl 4-chlorobenzenesulfonate
CAS name 4-chlorophenyl 4-chlorobenzenesulfonate
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 known
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance Panonychus citri
Panonychus ulmi
Tetranychus mcdanieli
Tetranychus urticae
Physical state White crystalline solid
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
  • Dow Chemical Co.
  • DowElanco
  • Nippon Soda
  • FMC
Example products using this active
  • Corotran
  • Mitran
  • Neosappiran
  • Ovochlor
  • Ovex
  • Sappiran
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Usually supplied as a wettable powder or emulsifiable concentrate.


ENVIRONMENTAL FATE

for chlorfenson

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) 2.96 V3 - @ 25 DegC Low
Solubility - In organic solvents at 20oC (mg l-1) 410000 CA3 - Carbon tetrachloride -
1100000 CA3 - Cyclohexanone -
780000 CA3 - Xylene -
1300000 CA3 - Acetone -
Melting point (oC) 86.5 CA3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 1.62 X 1004 Calculated -
Log P 4.21 V3 High
Bulk density (g ml-1)/Specific gravity - - -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 0.25 V3 - @ 25 degC Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 1.66 X 10-02 V3 - @ 25 degC Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index - - -
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 - - -
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) - - -
DT50 (lab at 20oC) - - -
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note: -
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value 5.0 R3 -
Note Orange peel, n=1
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value - - -
Note -
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 - CA2 Non-mobile
Koc 17000
Notes and range Estimated
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
p-chlorobenzenesulfonic acid - Plants; Cockroach - -


ECOTOXICOLOGY

for chlorfenson

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) 300 Q2 Estimated Threshold for concern
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) > 2000 L3 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 4600 V3 Phasianidae Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 0.7 F4 Lepomis macrochirus Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) - - -
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 Contact acute 48 hour LD50 (μg bee-1) - - -
Oral acute 48 hour LD50 (μg bee-1) - - -
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) - - -
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 Harmless AB1 Typhlodromus pyri -
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 chlorfenson

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) > 2000 L3 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) - - -
Mammals - Inhalation LC50 (mg l-1) - - -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.01 JMPR 1965 -
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 Harmful if swallowed
Possible kidney toxicant

: 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 When heated to decomposition it emits very toxic fumes
CLP classification 2013 Health: H302, H315
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases Xn - Harmful: R22
Xi - Irritant: R38
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S37, S60, S61
WHO Classification III - Slightly hazardous
US EPA Classification (formulation) No consensus across products or no products available - -
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for chlorfenson

Language Name
English chlorfenson
French chlorfenson
German Chlorfenson
Danish chlorfenson
Italian clorfenson
Spanish clorfenson
Greek chlorfenson
Slovenian klorfenson
Polish chlorofenson
Swedish -
Hungarian -
Dutch chloorfenson

Record last updated: Monday 28 May 2018
Contact: aeru@herts.ac.uk