Prometon is a non-selective herbicide without EU regulatory approval for use. It is highly soluble in water, volatile and, based on its chemical properties, it is highly mobile and has a high potential to leach to groundwater. It can be highly persistent in both soil and aquatic systems. It has a relatively low mammalian toxicity and is not expected to bioaccumulate. It is classified as an irritant. It is moderately toxic to birds, most aquatic species and honey bees.
Data alerts
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: Very persistent; GUS: High leachability; Drainflow: Mobile
Non-selective, systemic absorbed by foliage and roots, inhibits photosynthesis. Affects photosystem II competing with plastoquinone and modifying electron transport processes.
Example manufacturers & suppliers of products using this active now or historically
Ciba-Geigy Group
Makhteshim Agan
Example products using this active
Pramitol
Primatol
Gesafram
Formulation and application details
Usually formulated as emulsifiable concentrates, wettable powders and pellets. Application of sprays or granules can be before or after weed emergence.
DW4 DW = Don Wauchope personal database for Pka data: Wauchope, R. D. and Edwards, J. Dissociation constants for pesticide active ingredients: a database and comparison with predicted values. MS in preparation 4 = Verified data
-
Weak acid
Vapour pressure at 20 °C (mPa)
0.306
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Low volatility
Henry's law constant at 25 °C (Pa m³ mol⁻¹)
4.38 X 10-04
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
Non-volatile
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)
500
DW4 DW = Don Wauchope personal database for Pka data: Wauchope, R. D. and Edwards, J. Dissociation constants for pesticide active ingredients: a database and comparison with predicted values. MS in preparation 4 = Verified data
Very persistent
DT₅₀ (lab at 20 °C)
932
R3 R = Peer reviewed scientific publications 3 = Unverified data of known source
at 25 °C
Very persistent
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
-
-
-
Note
-
Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7
Value
Stable
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Stable
Note
General literature states >200 days
Water-sediment DT₅₀ (days)
-
-
-
Water phase only DT₅₀ (days)
-
-
-
Soil adsorption and mobility
Property
Value
Source; quality score; and other information
Interpretation
Linear
Kd
0.16
R3 R = Peer reviewed scientific publications 3 = Unverified data of known source
Mobile
Koc
43.2
Notes and range
Literature data: Kd range 0.15-0.17 mL g⁻¹, koc rnage 34.9-51.5 mL g⁻¹, soils=2; Other sources Log Koc 2.54 at 25 °C (R3)
Freundlich
Kf
0.29
R3 R = Peer reviewed scientific publications 3 = Unverified data of known source
Moderately mobile
Kfoc
75.2
1/n
0.918
Notes and range
Literature data: Kf range 0.22-0.36 mL g⁻¹, kfoc range 66.7-83.7 mL g⁻¹, 1/n range 0.872-0.963, Soils=2
pH sensitivity
-
Fate indices
Property
Value
Source; quality score; and other information
Interpretation
GUS leaching potential index
6.31
Calculated
High leachability
SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate
Value
3.18 X 1001
Calculated
-
Note
-
Potential for particle bound transport index
Medium
Calculated
-
Potential for loss via drain flow
Mobile
Calculated
-
ECOTOXICOLOGY
Property
Value
Source; quality score; and other information
Interpretation
Bio-concentration factor
BCF (l kg⁻¹)
69
Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source
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
Environmental fate
Ecotoxicity
Warning:
