Dicrotophos (Ref: OMS 253)
Last updated: 15/01/2023
(Also known as: ENT 24482; SD 3546; carbomicron ; dicrotofos; C709)
Dicrotofos is an organophosphate insecticide. It has a high aqueous solubility, quite volatile and, based on its chemical properties, it may leach to groundwater. It is not usually persistent in soils. It is highly toxic to mammals and has a low tendency to bioaccumulate. Dicrotofos is also an acetyl cholinesterase inhibitor. It has a highly toxicity to most biodiversity including honeybees and earthworms. However, it appears to be slightly less toxic 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
An insecticide used to control sucking and chewing pests, boring insects and mites
Aphids; Thrips; Spider mites; Fleahoppers; Sink bugs; Lygus bugs; Caterpillars; Boll weevils; Elm bark bettle
Coffee; Cotton; Rice; Pecans; Non-food producing and ornamental trees
-
Current
circa 1965
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
 
 
 
 
 
 
 
 
 
Isomeric existing in the E- and Z-forms. The E-isomer is more insecticidally active than the Z-isomer.
C₈H₁₆NO₅P
CC(=CC(=O)N(C)C)OP(=O)(OC)OC
O=P(O/C(=C/C(=O)N(C)C)C)(OC)OC
VEENJGZXVHKXNB-VOTSOKGWSA-N
InChI=1S/C8H16NO5P/c1-7(6-8(10)9(2)3)14-15(11,12-4)13-5/h6H,1-5H3/b7-6+
Yes
Insecticide, Acaricide
Organophosphate insecticide
-
-
Synthetic
Systemic with contact and stomach action. Acetylcholinesterase (AChE) inhibitor.
141-66-2
205-494-3
299
035201
5371560
015-073-00-4
237.19
(2E)-4-(dimethylamino)-4-oxobut-2-en-2-yl dimethyl phosphate
(E)-2-dimethylcarbamoyl-1-methylvinyl dimethyl phosphate
(1E)-3-(dimethylamino)-1-methyl-3-oxo-1-propenyl dimethyl phosphate
Potential groundwater pollutant; Marine Pollutant
-
Not applicable
Not applicable
1B
Not applicable
Leucoptera meyricki , Lygus lineolaris , Panonychus ulmi , Psylla pyricola , Bemisia tabaci , Boophilus microplus , many others
Yellow brown liquid
Amvac Chemical Co Shell Ciba-Geigy Kenogard
Carbicron Ektafos Carbomicron Bidrin Diapadrin
Often supplied as a water soluble concentrate or ULV spray.
1000000
at 25 °C
High
Miscible
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Acetone
-
Miscible
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Xylene
-
Miscible
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Dichloromethane
-
-
-
-
-
-
-
-
-
-
-
-
-
3.16 X 10-01
Calculated
-
-0.5
Low
-
-
-
-
-
-
1.22
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
-
-
-
-
9.3
Moderately volatile
5.10 X 10-06
Non-volatile
-
-
-
-
-
-
-
28
Non-persistent
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Best available data
1.0
R3 R = Peer reviewed scientific publications 3 = Unverified data of known source
-
Cotton leaves, n=1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Soil adsorption and mobility
-
Moderately mobile
75
-
-
-
-
-
-
-
-
3.08
Calculated
High leachability
2.83 X 10-01
Calculated
-
-
Low
Calculated
-
Moderately mobile
Calculated
-
75
Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source
Estimated
Low potential
Not available
-
-
-
-
Major fraction
0.20
-
-
-
Flooded soil
Known groundwater metabolites
None
Terrestrial ecotoxicology
17
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
High
0.05
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Rat 2 year
High
1
-
-
-
-
9.63
Anas platyrhynchos
High
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.036
Apis mellifera
High
0.068
Apis mellifera
High
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.0003
R4 R = Peer reviewed scientific publications 4 = Verified data
Megachile rotundata
High
Contact
0.685
R4 R = Peer reviewed scientific publications 4 = Verified data
Trigona spinipes
High
Contact
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6.3
Oncorhynchus mykiss
Moderate
-
-
-
0.013
Daphnia magna
High
0.00099
Daphnia magna
High
0.077
Americamysis bahia
High
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
HUMAN HEALTH AND PROTECTION
High (class III)
-
-
17
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
High
110
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
-
0.09
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
List I; List II
-
-
Low risk to Europeans as no longer approved for use
Rapidly absorbed through the skin, PPE/PPC essential
EU MRL pesticide database 
-
-
-
-
-
-
-
-
-
-
Carcinogen
Endocrine disruptor
?Possibly, status not identified
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
; E2 E = Unspecified genotoxicity type (miscellaneous data source) 2 = Mixed/ambiguous results
?Possibly, status not identified
Reproduction / development effects
Acetyl cholinesterase inhibitor
Neurotoxicant
No data found
✓Yes, known to cause a problem
No data found
Respiratory tract irritant
Skin irritant
Skin sensitiser
No data found
?Possibly, status not identified
No data found
Eye irritant
Phototoxicant
 
?Possibly, status not identified
No data found
 
Toxic if ingested, inhaled or by skin contact
No information available
Health: H300, H311 Environment: H400, H410
Ib (Highly hazardous)
3018
-
dicrotophos
dicrotophos
Dicrotophos
dicrotophos
dicrotofos
dicrotofos
dicrotophos
dikrotofos
-
-
dicrotofos
Record last updated:
15/01/2023
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