EPTC (Ref: R 1608)
Last updated: 16/01/2023
(Also known as: ethyl dipropylthiocarbamate; epthame; eptam)
EPTC is a selective herbicide. It is moderately soluble in water and is highly volatile. It is not expected to be persistent in soil systems but may be in water depending on local conditions. There may be a risk of drift. EPTC is moderately toxic to most biodiversity. This substance is also moderateoly toxic to mammals via the oral route. EPTC is an acetyl cholinesterase inhibitor, a neurotoxin and an 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
A herbicide used for pre-emergence control of annual and perennial grasses plus some broad-leaved weeds
Couch; Sedges; Bermudagrass; Pigweed; Lambsquarters; Nightshade; Foxtails; Barnyard grass; bents
Vegetables including peas, beans; Alfalfa; Forage legumes; Potatoes; Corn; Sweet potatoes
-
Current
circa 1957
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
C₉H₁₉NOS
CCCN(CCC)C(=O)SCC
No data
GUVLYNGULCJVDO-UHFFFAOYSA-N
InChI=1S/C9H19NOS/c1-4-7-10(8-5-2)9(11)12-6-3/h4-8H2,1-3H3
Yes
Herbicide
Thiocarbamate herbicide; Carbamate herbicide
-
-
Synthetic
Selective, systemic absorbed by roots and shoots. Lipid synthesis inhibitor.
759-94-4
212-073-8
155
041401
12968
006-030-00-0
189.3
S-ethyl dipropylcarbamothioate
S-ethyl dipropyl(thiocarbamate)
S-ethyl dipropylcarbamothioate
Potential groundwater contaminant; PAN listed Highly Hazardous Chemical; Risk of drift.
-
K3
15
Not applicable
Not applicable
-
Pale yellow liquid
Eradicane Eptam Genep Shortstop
Usually formulated as an emulsifiable concentrate or as granules
370
K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data
Moderate
Miscible
Acetone
-
Miscible
Benzene
-
Miscible
Xylene
-
Miscible
Ethanol
-
Not applicable
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
127
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
200
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
-
110
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
1.58 X 1003
Calculated
-
3.2
High
-
-
-
-
-
-
0.96
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
Not applicable
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
-
No dissociation
4500
Highly volatile
5.00 X 10-06
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Non-volatile
-
-
-
-
-
-
-
6
Non-persistent
-
-
-
18
Non-persistent
-
-
-
-
-
-
-
-
-
Literature DT₅₀ range 6-30 days in the field; Other sources: DT₅₀ 30-60 days (R3)
-
-
-
-
-
-
-
-
-
-
-
-
300
Persistent
-
-
-
-
-
-
-
Soil adsorption and mobility
-
Moderately mobile
300
Other literature sources: 109-240 mL g⁻¹ (R3)
0.76
R3 R = Peer reviewed scientific publications 3 = Unverified data of known source
Moderately mobile
187.7
0.905
Literature data: Kf range 0.36-0.47 mL g⁻¹, Kfoc range 153-222 mL g⁻¹, 1 /n range 0.826-0.984, soils=2
-
2.17
Calculated
Transition state
7.50 X 10-02
Calculated
-
-
Low
Calculated
-
Moderately mobile
Calculated
-
60
P4 P = Other governments and regulators 4 = Verified data
Low potential
Not available
-
None
Terrestrial ecotoxicology
916
Rat
Moderate
-
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Rat 21 day
-
326
-
-
-
-
1000
Anas platyrhynchos
Moderate
-
-
-
-
-
-
267
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
11.0
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
14
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Lepomis macrochirus
Moderate
-
-
-
14
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Daphnia magna
Moderate
0.81
P4 P = Other governments and regulators 4 = Verified data
Daphnia magna
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
2.9
Lemna gibba 96 hour
Moderate
5.46
Pseudokirchneriella subcapitata
Moderate
-
-
-
-
-
-
-
-
-
HUMAN HEALTH AND PROTECTION
High (class III)
-
-
916
Rat
Moderate
2000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
-
3.8
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EU MRL pesticide database 
-
-
-
-
-
-
-
-
-
-
Carcinogen
Endocrine disruptor
XNo, known not to cause a problem
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
; E3 E = Unspecified genotoxicity type (miscellaneous data source) 3 = Negative
No data found
Reproduction / development effects
Acetyl cholinesterase inhibitor
Neurotoxicant
?Possibly, status not identified
✓Yes, known to cause a problem
✓Yes, known to cause a problem
Respiratory tract irritant
Skin irritant
Skin sensitiser
No data found
✓Yes, known to cause a problem
No data found
Eye irritant
Phototoxicant
 
✓Yes, known to cause a problem
No data found
 
No further information available
No information available
Health: H302
II (Moderately hazardous)
-
-
EPTC
EPTC
EPTC
EPTC
EPTC
EPTC
EPTC
EPTC
EPTC
EPTC
EPTC
Record last updated:
16/01/2023
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