(Also known as: diallyldichloroacetamide; BRN 1768843)
SUMMARY
Dichlormid is a safener used with maize to protect from chloroacetanilide and thiocarbamate herbicides. It is highly soluble in water and is highly volatile. It is not usually persistent in soils. Dichlormid has a moderate mammalian toxicity with a high potential for bioaccumulation. It is also an irritant. It is relatively non-toxic to birds, fish and aquatic invertebrates.
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.
Example manufacturers & suppliers of products using this active now or historically
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Example products using this active
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Formulation and application details
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ENVIRONMENTAL FATE
Property
Value
Source; quality score; and other information
Interpretation
Solubility - In water at 20 °C (mg l⁻¹)
5000
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
High
Solubility - In organic solvents at 20 °C (mg l⁻¹)
15000
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
Kerosene
-
Melting point (°C)
5.5
V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) 3 = Unverified data of known source
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Boiling point (°C)
Decomposes before boiling
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
-
Degradation point (°C)
100
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
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Flashpoint (°C)
-
-
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Octanol-water partition coefficient at pH 7, 20 °C
P
6.92 X 1001
Calculated
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Log P
1.84
V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) 3 = Unverified data of known source
Low
Fat solubility of residues
Solubility
-
-
-
Data type
-
-
-
Density (g ml⁻¹)
1.17
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
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Dissociation constant pKa) at 25 °C
-
-
-
-
Vapour pressure at 20 °C (mPa)
800
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
Highly volatile. If applied directly to plants or soil, drift is a concern & mitigation is advisable
Henry's law constant at 25 °C (Pa m³ mol⁻¹)
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-
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Volatilisation as max % of applied dose lost
From plant surface
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-
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From soil surface
-
-
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Maximum UV-vis absorption L mol⁻¹ cm⁻¹
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-
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Surface tension (mN m⁻¹)
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-
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Degradation
Property
Value
Source; quality score; and other information
Interpretation
General biodegradability
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Soil degradation (days) (aerobic)
DT₅₀ (typical)
7
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
Non-persistent
DT₅₀ (lab at 20 °C)
-
-
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DT₅₀ (field)
8
Z3 Z = Kingtai Chemials website (click here ) 3 = Unverified data of known source
Non-persistent
DT₉₀ (lab at 20 °C)
-
-
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DT₉₀ (field)
-
-
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DT₅₀ modelling endpoint
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-
-
Note
General literature DT₅₀ < 10 days; Other sources: DT₅₀ 7 days (US3)
Dissipation rate RL₅₀ (days) on plant matrix
Value
-
-
-
Note
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Dissipation rate RL₅₀ (days) on and in plant matrix
Value
-
-
-
Note
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Aqueous photolysis DT₅₀ (days) at pH 7
Value
-
-
-
Note
-
Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7
Value
-
-
-
Note
-
Water-sediment DT₅₀ (days)
-
-
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Water phase only DT₅₀ (days)
-
-
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Sediment phase only DT₅₀ (days)
-
-
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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
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Soil adsorption and mobility
Property
Value
Source; quality score; and other information
Interpretation
Linear
Kd (mL g⁻¹)
-
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
Mobile
Koc (mL g⁻¹)
40
Notes and range
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Freundlich
Kf (mL g⁻¹)
-
-
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Kfoc (mL g⁻¹)
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1/n
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Notes and range
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pH sensitivity
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Fate indices
Property
Value
Source; quality score; and other information
Interpretation
GUS leaching potential index
2.17
Calculated
Transition state
SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate
Value
2.47 X 10-02
Calculated
-
Note
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Potential for particle bound transport index
Low
Calculated
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Potential for loss via drain flow
Mobile
Calculated
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Photochemical oxidative DT₅₀ (hrs) as indicator of long-range air transport risk
-
-
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Bio-concentration factor
BCF (l kg⁻¹)
Low risk
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
Based on LogP < 3
Low risk
CT₅₀ (days)
-
-
Known metabolites
None
ECOTOXICOLOGY
Terrestrial ecotoxicology
Property
Value
Source; quality score; and other information
Interpretation
Mammals - Acute oral LD₅₀ (mg kg⁻¹)
> 2000
V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID ) 3 = Unverified data of known source
Rat
Low
Mammals - Short term dietary NOEL
(mg kg⁻¹)
7.0
Z3 Z = Kingtai Chemials website (click here ) 3 = Unverified data of known 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
