Di-allate (Ref: CP 15)-Pesticide database

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Di-allate (Ref: CP 15)

(Also known as: diallate)

Di-allate is a pre-emergence herbicide. It has a low aqueous solubility but is miscible with many organic solvents. It is volatile and expected to be moderately persistent in soil systems. Di-allate is moderately toxic to mammals, carcinogenic and a recognised irritant. It is moderately toxic to fish but little data is available regarding its toxicity to other species.

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: Moderately persistent; GUS: Transition state; Drainflow: Slightly mobile	Ecotoxicity Moderate alert: Fish acute ecotoxicity: Moderate Warning: Significant data are missing	Human health Moderate alert: Mammals acute toxicity: Moderate; Possible Carcinogen; Possible Reproduction/development effects; Possible Acetyl cholinesterase inhibitor; Neurotoxicant

GENERAL INFORMATION

An obsolete pre-emergence herbicide used to control wild oats and other grass weeds

Example pests controlled

Wild oats; Blackgrass; Foxtails; Wild millet

Example applications

Alfalfa; Barley; Corn; Flax; Soybean; Lentils; Peas; Potatoes; Sugarbeet;

Efficacy & activity

Availability status

Considered obsolete but may be available in some countries

Introduction & key dates

1959, first reported

UK regulatory status

UK COPR regulatory status

Date COPR inclusion expires

UK LERAP status

No UK approval for use

EC Regulation 1107/2009 (repealing 91/414)

EC Regulation 1107/2009 status

Dossier rapporteur/co-rapporteur

Date EC 1107/2009 inclusion expires

EU Candidate for substitution (CfS)

Listed in EU database

Approved for use (✓) under EC 1107/2009 in the following EU Member States

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

Approved for use (✓) under EC 1107/2009 by Mutual Recognition of Authorisation and/or national regulations in the following EEA countries

ISIceland	NONorway

Additional information

Chemical structure

Geometric isomers Z & E

Chemical formula

C₁₀H₁₇Cl₂NOS

Canonical SMILES

CC(C)N(C(C)C)C(=O)SCC(=CCl)Cl

Isomeric SMILES

CC(C)N(C(C)C)C(=O)SC/C(=C/Cl)/Cl

International Chemical Identifier key (InChIKey)

SPANOECCGNXGNR-UHFFFAOYSA-N

International Chemical Identifier (InChI)

InChI=1S/C10H17Cl2NOS/c1-7(2)13(8(3)4)10(14)15-6-9(12)5-11/h5,7-8H,6H2,1-4H3/b9-5-

2D structure diagram/image available?

Substance groups

Thiocarbamate herbicide; Carbamate herbicide

Minimum active substance purity

Known relevant impurities

Substance origin

Selective, inhibits lipid metabolism and thus the development of seedling shoots and roots

US EPA chemical code

CLP index number

PIN (Preferred Identification Name)

S-[(2E)-2,3-dichloroprop-2-en-1-yl] di(propan-2-yl)carbamothioate

S-(EZ)-2,3-dichloroallyl diisopropyl(thiocarbamate)

S-(2,3-dichloro-2-propenyl) bis(1-methylethyl)carbamothioate

Other status information

Marine Pollutant

Relevant Environmental Water Quality Standards

Herbicide Resistance Classification (HRAC)

Herbicide Resistance Classification (WSSA)

Insecticide Resistance Classification (IRAC)

Fungicide Resistance Classification (FRAC)

Examples of recorded resistance

Amber coloured liquid

Example manufacturers & suppliers of products using this active now or historically

Monsanto
BASF

Example products using this active

Avadex
Pyradex

Formulation and application details

Usually formulated as an emulsifiable concentrate or as granules

ENVIRONMENTAL FATE

Source; quality score; and other information

Solubility - In water at 20 °C (mg l⁻¹)

H4 H = The US ARS pesticide properties database. Dataset is no longer available.
4 = Verified data

Solubility - In organic solvents at 20 °C (mg l⁻¹)

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

Melting point (°C)

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

Boiling point (°C)

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

Degradation point (°C)

Flashpoint (°C)

Octanol-water partition coefficient at pH 7, 20 °C

H4 H = The US ARS pesticide properties database. Dataset is no longer available.
4 = Verified data

Fat solubility of residues

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

Regulatory data - observed in metabolism and farm animal feeding studies

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

Density (g ml⁻¹)

Q2 Q = Miscellaneous data from online sources
2 = Unverified data of unknown source

Dissociation constant pKa) at 25 °C

Vapour pressure at 20 °C (mPa)

H4 H = The US ARS pesticide properties database. Dataset is no longer available.
4 = Verified data

Highly volatile

Henry's law constant at 25 °C (Pa m³ mol⁻¹)

H4 H = The US ARS pesticide properties database. Dataset is no longer available.
4 = Verified data

Moderately volatile

Maximum UV-vis absorption L mol⁻¹ cm⁻¹

Surface tension (mN m⁻¹)

Source; quality score; and other information

General biodegradability

Soil degradation (days) (aerobic)

DT₅₀ (typical)

Q2 Q = Miscellaneous data from online sources
2 = Unverified data of unknown source

Moderately persistent

DT₅₀ (lab at 20 °C)

DT₅₀ (field)

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

Moderately persistent

DT₉₀ (lab at 20 °C)

DT₉₀ (field)

DT₅₀ modelling endpoint

Other literature data: Persistent DT₅₀ 10-90 days

Dissipation rate RL₅₀ on plant matrix

Dissipation rate RL₅₀ on and in plant matrix

Aqueous photolysis DT₅₀ (days) at pH 7

Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7

Water-sediment DT₅₀ (days)

Water phase only DT₅₀ (days)

Soil adsorption and mobility

Source; quality score; and other information

H3 H = The US ARS pesticide properties database. Dataset is no longer available.
3 = Unverified data of known source

Slightly mobile

Notes and range

Notes and range

Source; quality score; and other information

GUS leaching potential index

Transition state

SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate

Potential for particle bound transport index

Potential for loss via drain flow

Slightly mobile

Bio-concentration factor

BCF (l kg⁻¹)

Q2 Q = Miscellaneous data from online sources
2 = Unverified data of unknown source

Threshold for concern

CT₅₀ (days)

Known metabolites

None

Terrestrial ecotoxicology

Source; quality score; and other information

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID )
3 = Unverified data of known source

Mammals - Short term dietary NOEL

Mammals - Chronic 21d NOAEL (mg kg⁻¹ bw d⁻¹)

Birds - Acute LD₅₀ (mg kg⁻¹)

Birds - Short term dietary (LC₅₀/LD₅₀)

Birds - Chronic 21d NOEL (mg kg⁻¹ bw d⁻¹)

Earthworms - Acute 14 day LC₅₀ (mg kg⁻¹)

Earthworms - Chronic NOEC, reproduction (mg kg⁻¹)

Soil micro-organisms

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)

Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

Unknown mode acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

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)

Beneficial insects (Predatory mites)

Beneficial insects (Ground beetles)

Aquatic ecotoxicology

Source; quality score; and other information

Fish - Acute 96 hour LC₅₀ (mg l⁻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

Rasbora heteromorpha

Fish - Chronic 21 day NOEC (mg l⁻¹)

Aquatic invertebrates - Acute 48 hour EC₅₀ (mg l⁻¹)

Aquatic invertebrates - Chronic 21 day NOEC (mg l⁻¹)

Aquatic crustaceans - Acute 96 hour LC₅₀ (mg l⁻¹)

Sediment dwelling organisms - Acute 96 hour LC₅₀ (mg l⁻¹)

Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l⁻¹)

Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg⁻¹)

Aquatic plants - Acute 7 day EC₅₀, biomass (mg l⁻¹)

Algae - Acute 72 hour EC₅₀, growth (mg l⁻¹)

Algae - Chronic 96 hour NOEC, growth (mg l⁻¹)

Mesocosm study data

NOEAEC mg l⁻¹

NOEAEC mg l⁻¹

HUMAN HEALTH AND PROTECTION

Source; quality score; and other information

Threshold of Toxicological Concern (Cramer Class)

High (class III)

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID )
3 = Unverified data of known source

Mammals - Dermal LD₅₀ (mg kg⁻¹ body weight)

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

Mammals - Inhalation LC₅₀ (mg l⁻¹)

Other Mammal toxicity endpoints

ADI - Acceptable Daily Intake (mg kg⁻¹ bw day⁻¹)

ARfD - Acute Reference Dose (mg kg⁻¹ bw day⁻¹)

AAOEL - Acute Acceptable Operator Exposure Level (mg kg⁻¹ bw day⁻¹)

AOEL - Acceptable Operator Exposure Level - Systemic (mg kg⁻¹ bw day⁻¹)

Dermal penetration studies (%)

Dangerous Substances Directive 76/464

Exposure Routes

Low risk to Europeans as no longer approved for use

Low risk to Europeans as no longer approved for use

EU MRL pesticide database

GB MRL Register

Drinking Water Standards

Drinking Water MAC (μg l⁻¹)

Mammalian dose elimination route and rate

Specific human health issues

Endocrine disruptor

?Possibly, status not identified

A0 A = Chromosome aberration (EFSA database)
0 = No data

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

Reproduction / development effects

Acetyl cholinesterase inhibitor

?Possibly, status not identified

?Possibly, status not identified

?Possibly, status not identified

Respiratory tract irritant

Skin sensitiser

✓Yes, known to cause a problem

✓Yes, known to cause a problem

✓Yes, known to cause a problem

General human health issues

Exposure may cause irritability, hyperactivity and mild cardiac changes

Handling issues

Value and interpretation

IMDG Transport Hazard Class 3

CLP classification 2013

Health: H302, H351
Environment: H400, H410

WHO Classification

II (Moderately hazardous)

Waste disposal & packaging

Shelf-life, storage, stability and reactivity

diallate; dialato

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