Mefenacet (Ref: FOE 1976)
Last updated: 23/01/2023
(Also known as: NTN 801)
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- and early post-emergence control of weeds mainly in rice crops
Grass weeds particularly Barnyard grass
Transplanted rice; Cereals; Legumes; Vegetables; Fruit; Hops
-
-
1987, Japan
Not approved
Expired
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Expired
-
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
 
 
 
 
 
 
 
 
 
ISIceland
NONorway
 
 
 
 
 
 
 
 
 
None
C₁₆H₁₄N₂O₂S
CN(C1=CC=CC=C1)C(=O)COC2=NC3=CC=CC=C3S2
No data
XIGAUIHYSDTJHW-UHFFFAOYSA-N
InChI=1S/C16H14N2O2S/c1-18(12-7-3-2-4-8-12)15(19)11-20-16-17-13-9-5-6-10-14(13)21-16/h2-10H,11H2,1H3
Yes
Cambridge Crystallographic Data Centre diagrams
Common Name
Relationship
Link
mefenacet
-
Herbicide
Anilide herbicide; Benzothiazole herbicide
-
-
Synthetic
Selective, inhibits cell division and growth. Inhibition of VLCFA (inhibition of cell division).
73250-68-7
277-328-8
None allocated
-
91716
612-139-00-X
298.36
-
2-(1,3-benzothiazol-2-yloxy)-N-methylacetanilide
2-(2-benzothiazolyloxy)-N-methyl-N-phenylacetamide
-
-
K3
15
Not applicable
Not applicable
-
Colourless crystals
Bayer CropScience AgroCare King Tech Corp.
Usually supplied as granules and wettable powders
4
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Low
200000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Dichloromethane
-
500
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Hexane
-
35000
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Toluene
-
7500
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Isopropanol
-
134.8
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
-
-
-
-
-
-
-
-
-
1.70 X 1003
Calculated
-
3.23
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
High
-
-
-
-
-
-
1.32
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
-
-
-
-
-
6.40 X 10-04
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Low volatility
4.77 X 10-05
Non-volatile
-
-
-
-
-
-
-
35
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Moderately persistent
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Best available data
-
-
-
-
-
-
-
-
-
-
-
-
Stable
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Stable
Stable pH 4 to pH 9
-
-
-
-
-
-
Soil adsorption and mobility
-
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
Slightly mobile
2964
Estimated
-
-
-
-
-
-
-
0.82
Calculated
Low leachability
1.53 X 10-02
Calculated
-
-
Medium
Calculated
-
Slightly mobile
Calculated
-
29
R4 R = Peer reviewed scientific publications 4 = Verified data
Whole body
Low potential
Not available
-
Known groundwater metabolites
None
None
Terrestrial ecotoxicology
> 5000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
Low
-
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Rat 2 year
-
100
-
-
-
-
5000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Colinus virginianus
Low
-
-
-
-
-
-
1000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Eisenia foetida
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Salmonidae
Moderate
-
-
-
1.81
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Daphnia magna
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.18
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Scenedemus subspicatus
Moderate
-
-
-
-
-
-
-
-
-
HUMAN HEALTH AND PROTECTION
High (class III)
-
-
> 5000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
Low
5000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
-
0.02
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat (dust)
-
-
-
-
0.0036
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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
XNo, known not to cause a problem
XNo, known not to cause a problem
No data found
Respiratory tract irritant
Skin irritant
Skin sensitiser
No data found
No data found
No data found
Eye irritant
Phototoxicant
 
No data found
No data found
 
No further information available
No information available
Environment: H411
U (Unlikely to present an acute hazard)
-
-
mefenacet
mefenacet
Mefenacet
mefenacet
mefenacet
mefenacet
-
mefenacet
-
-
-
-
Record last updated:
23/01/2023
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