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 Moderate alert: GUS: Transition state; Drainflow: Moderately mobile
Human health Moderate alert: Mammals acute toxicity: Moderate
GENERAL INFORMATION
Description
A pro-insecticide used to control sucking and chewing insect pests. Dimpropyridaz forms the secondary amide metabolite (pyridazine pyrazolecarboxamide), which is biologically active.
Example manufacturers & suppliers of products using this active now or historically
BASF
Example products using this active
Axalion
Efficon
Formulation and application details
Various formulations available including foliar sprays. denches and dips
ENVIRONMENTAL FATE
Property
Value
Source; quality score; and other information
Interpretation
Solubility - In water at 20 °C (mg l⁻¹)
28700
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
High
Solubility - In organic solvents at 20 °C (mg l⁻¹)
10000
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
n-Heptane
-
67000
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Xylene
-
250000
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Acetone
-
250000
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Ethyl acetate
-
Melting point (°C)
81.9
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
-
Boiling point (°C)
-
-
-
Degradation point (°C)
208
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
-
Flashpoint (°C)
-
-
-
Octanol-water partition coefficient at pH 7, 20 °C
P
1.26 X 1001
Calculated
-
Log P
1.1
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Low
Fat solubility of residues
Solubility
-
-
-
Data type
-
-
-
Density (g ml⁻¹)
-
-
-
Dissociation constant pKa) at 25 °C
No dissociation
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
-
-
Vapour pressure at 20 °C (mPa)
8.7 X 10-03
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Low volatility
Henry's law constant at 25 °C (Pa m³ mol⁻¹)
-
-
-
Volatilisation as max % of applied dose lost
From plant surface
-
-
-
From soil surface
-
-
-
Maximum UV-vis absorption L mol⁻¹ cm⁻¹
-
-
-
Surface tension (mN m⁻¹)
52.9
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
at 20 °C 90% soln
-
Degradation
Property
Value
Source; quality score; and other information
Interpretation
General biodegradability
Not readily biodegradable
Soil degradation (days) (aerobic)
DT₅₀ (typical)
30
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Moderately persistent
DT₅₀ (lab at 20 °C)
30
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Moderately persistent
DT₅₀ (field)
22
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Non-persistent
DT₉₀ (lab at 20 °C)
-
-
-
DT₉₀ (field)
-
-
-
DT₅₀ modelling endpoint
-
-
-
Note
Australian Dossier 2022: Lab studies DT₅₀ range 16-98 days, Soils=4; Field studies DT₅₀ range 9.1-81 days, Soils=12
Dissipation rate RL₅₀ (days) on plant matrix
Value
-
-
-
Note
-
Dissipation rate RL₅₀ (days) on and in plant matrix
Value
-
-
-
Note
-
Aqueous photolysis DT₅₀ (days) at pH 7
Value
47
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Stable
Note
-
Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7
Value
185
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Persistent
Note
-
Water-sediment DT₅₀ (days)
101.5
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Slow
Water phase only DT₅₀ (days)
120
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Stable
Sediment phase only DT₅₀ (days)
-
-
-
Air degradation
As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below.
Decay in stored produce DT₅₀
-
Soil adsorption and mobility
Property
Value
Source; quality score; and other information
Interpretation
Linear
Kd (mL g⁻¹)
-
-
-
Koc (mL g⁻¹)
-
Notes and range
-
Freundlich
Kf (mL g⁻¹)
2.58
P4 P = Other non-EU, UK or US Governments and Regulators 4 = Verified data
Moderately mobile
Kfoc (mL g⁻¹)
135.5
1/n
-
Notes and range
Australian dossier 2022. Kf range 0.1705.0 mL g⁻¹; Kfoc range 19-248 mL g⁻¹
pH sensitivity
-
Fate indices
Property
Value
Source; quality score; and other information
Interpretation
GUS leaching potential index
2.51
Calculated
Transition state
SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate
Value
1.26 X 10-01
Calculated
-
Note
-
Potential for particle bound transport index
Low
Calculated
-
Potential for loss via drain flow
Moderately mobile
Calculated
-
Photochemical oxidative DT₅₀ (hrs) as indicator of long-range air transport risk
-
-
-
Bio-concentration factor
BCF (l kg⁻¹)
-
-
-
CT₅₀ (days)
-
-
Known soil metabolites
Metabolite
Major/Minor fraction
Estimated maximum occurrence fraction
Notes
Ref: M550I001
Major fraction
0.510
-
Ref: M550I004
Major fraction
0.100
-
Ref: M550I005
-
-
-
Known groundwater metabolites
None
Other known metabolites
None
ECOTOXICOLOGY
Terrestrial ecotoxicology
Property
Value
Source; quality score; and other information
Interpretation
Mammals - Acute oral LD₅₀ (mg kg⁻¹)
465
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Rat
Moderate
Mammals - Short term dietary NOEL
(mg kg⁻¹)
-
-
-
(ppm diet)
-
-
Mammals - Chronic 21d NOAEL (mg kg⁻¹ bw d⁻¹)
-
-
-
Birds - Acute LD₅₀ (mg kg⁻¹)
1778
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Colinus virginianus
Moderate
Birds - Short term dietary (LC₅₀/LD₅₀)
-
-
-
Birds - Chronic 21d NOEL (mg kg⁻¹ bw d⁻¹)
97
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Colinus virginianus
Moderate
Earthworms - Acute 14 day LC₅₀ (mg kg⁻¹)
> 1000
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Eisenia foetida
Low
Earthworms - Chronic NOEC, reproduction (mg kg⁻¹)
> 285
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Eisenia foetida
Low
Soil micro-organisms
-
-
-
Collembola
Acute LC₅₀ (mg kg⁻¹)
-
-
-
Chronic NOEC (mg kg⁻¹)
-
-
-
Non-target plants
-
-
-
-
-
-
Honeybees (Apis spp.)
Contact acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)
> 50
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Lowest of 2 bee species
Moderate
Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)
> 42
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Lowest of 2 bee species
Moderate
Unknown mode acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)
> 45
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Bee larvae
Moderate
Chronic
-
-
-
Notes
-
Bumblebees (Bombus spp.)
Contact acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)
-
-
-
-
Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)
-
-
-
-
Mason bees (Osmia spp.)
Contact acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)
-
-
-
Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)
-
-
-
Other bee species (1)
Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)
-
-
-
Mode of exposure
-
Other bee species (2)
Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)
-
-
-
Mode of exposure
-
Beneficial insects (Ladybirds)
-
-
-
Beneficial insects (Lacewings)
-
-
-
Beneficial insects (Parasitic wasps) as Mortality LR₅₀ g ha⁻¹
34
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Aphidius rhopalosiphi
-
Beneficial insects (Predatory mites) as Mortality LR₅₀ g ha⁻¹
546
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Typhlodromus pyr
-
Beneficial insects (Ground beetles)
-
-
-
Aquatic ecotoxicology
Property
Value
Source; quality score; and other information
Interpretation
Temperate Freshwater Fish - Acute 96 hour LC₅₀ (mg l⁻¹)
> 30
P4 P = Other non-EU, UK or US Governments and Regulators 4 = Verified data
Unknown species
Moderate
Temperate Freshwater Fish - Chronic 21 day NOEC (mg l⁻¹)
11.0
P5 P = Other non-EU, UK or US Governments and Regulators 5 = Verified data used for regulatory purposes
Pimephales promelas
Low
Tropical Freshwater Fish - Acute 96 hour LC₅₀ (mg l⁻¹)
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
