Dimethrin (Ref: ENT 21170 )
Last updated: 19/08/2023
(Also known as: dimetrin; dimethrine; SHA 034101)
Dimethrin is a pyrethroid ester insecticide mainly used for public health applications. It is largely considered obsolete. It has a low aqueous solubility, low volatility and not considered to be highly mobile. It is toxic to fish. Dimethrin is not particularly toxic to mammals via the oral route and is a recognised irritant.
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
An obsolete, pyrethroid insecticide
Mosquitoes; Body lice; Stable flies; Blowfiles; Cattle flies
Public health situations; Public buildings; Livestock buildings
-
Considered obsolete but may be available in some countries
1958, first reported
Not approved
Not applicable
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Not applicable
Not applicable
No
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
 
 
 
 
 
 
 
 
 
ISIceland
NONorway
 
 
 
 
 
 
 
 
 
Isomeric. Substance has mixed sterochemistry.
C₁₉H₂₆O₂
CC1=CC(=C(C=C1)COC(=O)C2C(C2(C)C)C=C(C)C)C
-
FHNKBSDJERHDHZ-UHFFFAOYSA-N
InChI=1S/C19H26O2/c1-12(2)9-16-17(19(16,5)6)18(20)21-11-15-8-7-13(3)10-14(15)4/h7-10,16-17H,11H2,1-6H3
Yes
Insecticide, Miticide
Pyrethroid insecticide; Pyrethroid ester insecticide
-
-
Synthetic
Sodium channel modulator, acts on the nervous system of insects
70-38-2
No data found
None allocated
034101
6265
No data found
286.41
(2,4-dimethylphenyl)methyl (1E,3E)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate
2,4-dimethylbenzyl (1RS,3RS;1RS,3SR)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate
(2,4-dimethylphenyl)methyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate
-
-
Not applicable
Not applicable
3A
Not applicable
Sitophilus granarius
Amber coloured liquid
-
Obsolete - not thought to be commercially available for crop protection applications
-
0.036
Low
-
-
-
25
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
-
175
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
at 3.8 mmHg
-
-
-
-
-
-
-
3.72 X 1006
Calculated
-
6.57
High
-
-
-
-
-
-
-
-
-
-
-
-
-
2.293
Low volatility
7.711
Moderately volatile
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Soil adsorption and mobility
-
Non-mobile
31000
Estimated
-
-
-
-
-
-
-
-
-
-
Cannot be calculated
-
-
-
-
-
-
-
-
-
-
-
-
-
-
None
Terrestrial ecotoxicology
> 40000
Rat
Low
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.32
Lepomis macrochirus
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
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-
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-
HUMAN HEALTH AND PROTECTION
Low (class I)
-
-
> 40000
Rat
Low
4900
Rabbit
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
Occupational exposure tmay occur through inhalation and dermal contact but risk is very low as substance is obsolete
EU MRL pesticide database 
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-
-
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-
-
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Carcinogen
Endocrine disruptor
No data found
A0 A = Chromosome aberration (EFSA database) 0 = No data
; 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
?Possibly, status not identified
Respiratory tract irritant
Skin irritant
Skin sensitiser
✓Yes, known to cause a problem
✓Yes, known to cause a problem
No data found
Eye irritant
Phototoxicant
 
✓Yes, known to cause a problem
No data found
 
Suspected liver toxicant May cause contact dermatitis and respiratory allergies
No information available
-
Not listed (Not listed)
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-
-
dimethrin
dimethrine
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Record last updated:
19/08/2023
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