Diflufenzopyr (Ref: HSDB 7010)
Last updated: 15/01/2023
(Also known as: BAS 654H; SAN 835H)
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
Used, post-emergence, to control annual broad-leaved and perennial weeds in a variety of crops
Knotweed; Lambsquarters; Mallow; Buckweed; Nightshade; Morning glory; Bindweed; Ragweed; Smartweed; Sowthistle; Johnson grass; Milkweed
Pasture; No-tlll burndown (Corn; Soybeans); Non-cropped land including rangeland, fallow
-
Current
1999, USA and Canada
Not approved
Not applicable
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Not applicable
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
C₁₅H₁₂F₂N₄O₃
CC(=NNC(=O)NC1=CC(=CC(=C1)F)F)C2=C(C=CC=N2)C(=O)O
C/C(=N\NC(=O)NC1=CC(=CC(=C1)F)F)/C2=C(C=CC=N2)C(=O)O
IRJQWZWMQCVOLA-DNTJNYDQSA-N
InChI=1S/C3H2F4O2.Na/c4-1(5)3(6,7)2(8)9;/h1H,(H,8,9);/q;+1/p-1
Yes
Herbicide
Semicarbazone herbicide, Urea herbicide
-
-
Synthetic
Systemic, works by inhibiting auxin transport
109293-97-2
600-910-3
None allocated
005107
6125184
No data found
334.28
2-[(1E)-1-{2-[(3,5-difluorophenyl)carbamoyl]hydrazinylidene}ethyl]pyridine-3-carboxylic acid
2-{(EZ)-1-[4-(3,5-difluorophenyl)semicarbazono]ethyl}nicotinic acid
2-[1-[[[(3,5-difluorophenyl)amino]carbonyl]hydrazono]ethyl]-3-pyridinecarboxylic acid
Marine polluant
-
P
19
Not applicable
Not applicable
-
Off-white coloured granular solid
Usually supplied as wettable granules for ground application using standard commercial sprayers
5850
High
-
-
-
135.5
-
-
-
-
155
-
-
-
-
1.23 X 1001
Calculated
-
1.09
Low
-
-
-
-
-
-
0.24
-
3.18
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
Weak acid
0.01
Low volatility
7.0 X 10-05
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Non-volatile
-
-
-
-
-
-
-
14
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Non-persistent
-
-
-
4.5
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Non-persistent
-
-
-
-
-
-
-
-
-
General literature DT₅₀ range 8-18 days
-
-
-
-
-
-
-
-
17
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Slow
pH sensitive: DT₅₀ 7 days at pH 5, 13 days at pH 9
24
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Non-persistent
pH sensitive: DT₅₀ 13 days at pH 5, 26 days at pH 9
-
-
-
-
-
-
Soil adsorption and mobility
-
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
Moderately mobile
87
General literature Koc range 18-156 mL g⁻¹
-
-
-
-
-
-
-
1.35
Calculated
Low leachability
3.63 X 10-03
Calculated
-
-
Low
Calculated
-
Moderately mobile
Calculated
-
Low risk
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
Based on LogP < 3
Low risk
-
-
Known soil and groundwater metabolites
None
8-methyl-5-hydroxy-pyrido(2,3-d)-pyridazine
-
-
-
-
3,5-difluoroaniline
-
-
-
-
6-((3,5-difluorophenyl) carbamoyl)-8-methyl-pyrido (2,3-d)-5-pyridazinone
carbamoyl phthalazinone
-
-
-
2-acetyl nicotinic acid
-
-
-
-
N-(3,5-difluorophenyl)carbamate
-
-
-
-
8-methylpyrido[2,3-d]pyridazine-2,5(1H, 6H)-dione
-
-
-
-
8-hydroxymethyl-5(6H)pyrido[2,3-d]pyridazinone
-
-
-
-
8-hydroxymethylpyrido[2,3-d]pyridazine-2,5(1H,6H)-dione
-
-
-
-
Terrestrial ecotoxicology
> 5000
Rat
Low
26.0
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Dog
High
-
-
-
-
-
> 2250
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Colinus virginianus
Low
> 16970 mg/Kg BW
Colinus virginianus
-
-
-
-
> 1000
Eisenia foetida
Low
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
> 75.0
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
106
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Oncorhynchus mykiss
Low
-
-
-
15.0
Daphnia magna
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
> 0.35
Lemna gibba
Moderate
> 0.1
Pseudokirchneriella subcapitata
Moderate
-
-
-
-
-
-
-
-
-
HUMAN HEALTH AND PROTECTION
High (class III)
-
-
> 5000
Rat
Low
5000
Rat
-
> 2.93
Rat
-
-
-
-
0.26
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
-
-
-
-
-
-
-
-
-
-
-
-
List II
-
-
-
-
EU MRL pesticide database 
-
-
-
-
-
-
-
-
-
-
Carcinogen
Endocrine disruptor
XNo, known not to cause a problem
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
✓Yes, known to cause a problem
Reproduction / development effects
Acetyl cholinesterase inhibitor
Neurotoxicant
?Possibly, status not identified
XNo, known not to cause a problem
?Possibly, status not identified
Respiratory tract irritant
Skin irritant
Skin sensitiser
No data found
XNo, known not to cause a problem
?Possibly, status not identified
Eye irritant
Phototoxicant
 
✓Yes, known to cause a problem
No data found
 
Possible testicular, kidney, lung, spleen and brain toxicant
IMDG Transport code 9
Health: H319, H332
NL (Not listed)
3077
Packaging Group III (minor danger)
diflufenzopyr
-
-
-
-
diflufenzopir
-
diflufenzopyr
-
-
-
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