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
Environmental fate High alert: GUS: High leachability
Warning: Significant data are missing
 
Human health Moderate alert: Possible Reproduction/development effects
Warning: Significant data are missing
GENERAL INFORMATION
Description
A herbicide that is normally used as the butyl derivative. Also a chemical transformation product
Example pests controlled
Volunteer cereals, Annual and perennial grass weeds
Example applications
Soybeans; Carrots; Spinach; Potatoes; Ornamentals
Efficacy & activity
-
Availability status
Current
Introduction & key dates
1981, first marketed
UK regulatory status
UK COPR regulatory status
Approved
Date COPR inclusion expires
31/12/2026
UK LERAP status
None
EC Regulation 1107/2009 (repealing 91/414)
EC Regulation 1107/2009 status
Approved
Dossier rapporteur/co-rapporteur
France/Italy
Date EC 1107/2009 inclusion expires
31/12/2023
EU Candidate for substitution (CfS)
No
Listed in EU database
Yes
Approved for use (✓) under EC 1107/2009 in the following EU Member States
Example manufacturers & suppliers of products using this active now or historically
Not applicable
Example products using this active
-
Formulation and application details
-
ENVIRONMENTAL FATE
Property
Value
Source; quality score; and other information
Interpretation
Solubility - In water at 20 °C (mg l⁻¹)
40.5
V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) 3 = Unverified data of known source
at 25 °C
Low
Solubility - In organic solvents at 20 °C (mg l⁻¹)
-
-
-
Melting point (°C)
-
-
-
Boiling point (°C)
-
-
-
Degradation point (°C)
-
-
-
Flashpoint (°C)
-
-
-
Octanol-water partition coefficient at pH 7, 20 °C
P
1.51 X 1003
Calculated
-
Log P
3.18
V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) 3 = Unverified data of known source
High
Fat solubility of residues
Solubility
Soluble
F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) 3 = Unverified data of known source
-
Data type
Measured
F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) 3 = Unverified data of known source
-
Density (g ml⁻¹)
-
-
-
Dissociation constant pKa) at 25 °C
3.12
V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) 3 = Unverified data of known source
-
Weak acid
Vapour pressure at 20 °C (mPa)
-
-
-
Henry's law constant at 25 °C (Pa m³ mol⁻¹)
-
-
-
Maximum UV-vis absorption L mol⁻¹ cm⁻¹
-
-
-
Surface tension (mN m⁻¹)
-
-
-
Degradation
Property
Value
Source; quality score; and other information
Interpretation
General biodegradability
-
Soil degradation (days) (aerobic)
DT₅₀ (typical)
25
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
Non-persistent
DT₅₀ (lab at 20 °C)
-
-
-
DT₅₀ (field)
-
-
-
DT₉₀ (lab at 20 °C)
-
-
-
DT₉₀ (field)
-
-
-
DT₅₀ modelling endpoint
-
-
-
Note
-
Dissipation rate RL₅₀ on plant matrix
Value
-
-
-
Note
-
Dissipation rate RL₅₀ on and in plant matrix
Value
-
-
-
Note
-
Aqueous photolysis DT₅₀ (days) at pH 7
Value
15
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
Slow
Note
-
Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7
Value
Stable
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
Stable
Note
-
Water-sediment DT₅₀ (days)
43
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
Moderately fast
Water phase only DT₅₀ (days)
45
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
EU dossier Kd range 1.1-13.1 mL g⁻¹, Koc range 106-304 mL g⁻¹, Soils=6
Freundlich
Kf
1.10
A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes
Mobile
Kfoc
48.72
1/n
0.64
Notes and range
EU dossier kf range 0.8-2.1 mL g⁻¹, Kfoc range 38.5-83.6 mL g⁻¹, 1/n range 0.52-0.82, Soils=6
pH sensitivity
No
Fate indices
Property
Value
Source; quality score; and other information
Interpretation
GUS leaching potential index
3.23
Calculated
High leachability
SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate
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