Chlorfenson (Ref: K 6451)
Last updated: 09/03/2022
(Also known as: chlorfénizon; ephirsulfonate; ovatron; ovex; chlorfenizon)
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.
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
Environmental fate
Ecotoxicity
Human health
A non-selective, diphenyl obsolete acaricide
Spider mites
Fruit including citrus; Cotton; Hops; Vegetables; Ornamentals
-
Considered obsolete but may be available in some countries
1949, first reported
Not approved
Expired
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Expired
Not applicable
Yes
ATAustria
BEBelgium
BGBulgaria
CYCyprus
CZCzech Republic
DEGermany
DKDenmark
EEEstonia
ELGreece
 
 
 
 
 
 
 
 
 
ESSpain
FIFinland
FRFrance
HRCroatia
HUHungary
IEIreland
ITItaly
LTLithuania
LULuxembourg
 
 
 
 
 
 
 
 
 
LVLatvia
MTMalta
NLNetherlands
PLPoland
PTPortugal
RORomania
SESweden
SISlovenia
SKSlovakia
 
 
 
 
 
 
 
 
 
None
C₁₂H₈Cl₂O₃S
C1=CC(=CC=C1OS(=O)(=O)C2=CC=C(C=C2)Cl)Cl
No data
RZXLPPRPEOUENN-UHFFFAOYSA-N
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
Yes
Acaricide, Miticide, Insecticide
Bridged diphenyl insecticide; Bridged diphenyl acaricide
-
-
Synthetic
Acts by inhibiting oxidative phosphorylation. Contact and stomach action and long residual ovicidal activity.
80-33-1
201-270-4
53
020201
6635
303.2
4-chlorophenyl 4-chlorobenzene-1-sulfonate
4-chlorophenyl 4-chlorobenzenesulfonate
4-chlorophenyl 4-chlorobenzenesulfonate
-
-
Not applicable
Not applicable
13
Not applicable
Panonychus citri , Panonychus ulmi , Tetranychus mcdanieli , Tetranychus urticae
White crystalline solid
Dow Chemical Co. DowElanco Nippon Soda FMC
Corotran Mitran Neosappiran Ovochlor Ovex Sappiran Carmel Nutro Rose And Floral Spray
Usually supplied as a wettable powder or emulsifiable concentrate
2.96
at 25 °C
Low
410000
Carbon tetrachloride
-
1100000
Cyclohexanone
-
780000
Xylene
-
1300000
Acetone
-
86.5
-
-
-
-
-
-
-
-
-
-
1.62 X 1004
Calculated
-
4.21
High
-
-
-
-
-
-
-
0.25
at 25 °C
Low volatility
1.66 X 10-02
at 25 °C
Non-volatile
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
5.0
R3 R = Peer reviewed scientific publications 3 = Unverified data of known source
-
Orange peel, n=1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Soil adsorption and mobility
-
Non-mobile
17000
Estimated
-
-
-
-
-
-
-
-
-
-
Cannot be calculated
-
-
-
-
-
-
-
-
-
300
Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source
Estimated
Threshold for concern
Not available
-
p-chlorobenzenesulfonic acid
-
Plants; Cockroach
-
-
Terrestrial ecotoxicology
> 2000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
Low
-
-
-
-
-
-
-
-
> 4600
Phasianidae
Low
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Harmless
AB1 AB = SELECTV Database 1 = Estimated data with little or no verification
Typhlodromus pyri
-
-
-
-
0.7
Lepomis macrochirus
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
HUMAN HEALTH AND PROTECTION
High (class III)
-
-
> 2000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
Low
-
-
-
-
-
-
-
-
-
0.01
JMPR 1965
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EU MRL pesticide database 
-
-
-
-
-
-
-
-
-
-
Carcinogen
Endocrine disruptor
No data found
A3 A = Chromosome aberration (EFSA database) 3 = Negative
; B0 B = DNA damage/repair (EFSA database) 0 = No data
; C0 C = Gene mutation (EFSA database) 0 = No data
; D0 D = Genome mutation (EFSA database) 0 = No data
; E0 E = Unspecified genotoxicity type (miscellaneous data source) 0 = No data
No data found
Reproduction / development effects
Acetyl cholinesterase inhibitor
Neurotoxicant
No data found
XNo, known not to cause a problem
No data found
Respiratory tract irritant
Skin irritant
Skin sensitiser
No data found
✓Yes, known to cause a problem
No data found
Eye irritant
Phototoxicant
 
XNo, known not to cause a problem
No data found
 
Harmful if swallowed Possible kidney toxicant
When heated to decomposition it emits very toxic fumes
Health: H302, H315 Environment: H400, H410
III (Slightly hazardous)
-
-
chlorfenson
chlorfenson
Chlorfenson
chlorfenson
clorfenson
clorfenson
chlorfenson
chlorofenson
-
-
chloorfenson
Record last updated:
09/03/2022
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