Imibenconazole (Ref: HF 6305)-Pesticide database

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Imibenconazole (Ref: HF 6305)

(Also known as: HF 8505)

Imibenconazole is a triazole fungicide. It has a low aqueous solubility, is slightly volatile and, based on its chemical properties, it is non-mobile and unlikely to leach to groundwater. It is not generally persistent in soil systems but may be moderately persistent in aquatic systems under certain conditions. It has a low mammalian toxicity. It shows a moderate level of toxicity to fish, daphnia and earthworms but is relatively non-toxic to honey bees, birds and algae.

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: Potential for particle bound transport: Medium	Ecotoxicity Moderate alert: Fish acute ecotoxicity: Moderate	Human health Low alert Warning: Significant data are missing

GENERAL INFORMATION

Used to control a range of fungal diseases affecting fruit, vegetables, turf and ornamentals

Example pests controlled

Scab, Powdery mildew, Alternaria leaf spot, Rust

Example applications

Fruit including apples, pears, peaches, citrus; Ornamentals including roses, chrysanthemums

Efficacy & activity

Availability status

Introduction & key dates

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

A mixture of the cis- and trans-isomers

Chemical formula

C₁₇H₁₃Cl₃N₄S

Canonical SMILES

C1=CC(=CC=C1CSC(=NC2=C(C=C(C=C2)Cl)Cl)CN3C=NC=N3)Cl

Isomeric SMILES

International Chemical Identifier key (InChIKey)

AGKSTYPVMZODRV-UHFFFAOYSA-N

International Chemical Identifier (InChI)

InChI=1S/C17H13Cl3N4S/c18-13-3-1-12(2-4-13)9-25-17(8-24-11-21-10-22-24)23-16-6-5-14(19)7-15(16)20/h1-7,10-11H,8-9H2

2D structure diagram/image available?

Substance groups

Triazole fungicide; Conazole fungicide

Minimum active substance purity

Known relevant impurities

Substance origin

Systemic with curative and preventative action. Inhibits germ tube and mycellium growth. Sterol biosynthesis inhibitor.

US EPA chemical code

CLP index number

PIN (Preferred Identification Name)

(4-chlorophenyl)methyl (E)-N-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanimidothioate

4-chlorobenzyl (EZ)-N-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-yl)thioacetamidate

(4-chlorophenyl)methyl N-(2,4-dichlorophenyl)-1H-1,2,4-triazole-1-ethanimidothioate

Other status information

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

Pale yellow crystals

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

Hokko Chemical Industry Co. Ltd.

Example products using this active

Manage

Formulation and application details

Available in a wide variety of formulations including emulsifiable concentrates, soluble concentrates, water dispersiable granules and wettable powders. Often used as a seed dressing.

ENVIRONMENTAL FATE

Source; quality score; and other information

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

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

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)

E3 E = Manufacturers safety data sheets
3 = Unverified data of known source

Degradation point (°C)

Flashpoint (°C)

E3 E = Manufacturers safety data sheets
3 = Unverified data of known source

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

8.71 X 10⁰⁴

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

Fat solubility of residues

Likely to be soluble

Q3 Q = Miscellaneous data from online sources
3 = Unverified data of known source

Based on chemical group

Q3 Q = Miscellaneous data from online sources
3 = Unverified data of known source

Density (g ml⁻¹)

Dissociation constant pKa) at 25 °C

Vapour pressure at 20 °C (mPa)

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

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)

Source; quality score; and other information

General biodegradability

Soil degradation (days) (aerobic)

DT₅₀ (typical)

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

DT₅₀ (lab at 20 °C)

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

DT₅₀ (field)

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

DT₉₀ (lab at 20 °C)

DT₉₀ (field)

DT₅₀ modelling endpoint

Literature values Lab studies DT₅₀ range 4-20 days, field studies DT₅₀ range 1-28 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

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

Moderately persistent

Water-sediment DT₅₀ (days)

Water phase only DT₅₀ (days)

Soil adsorption and mobility

Source; quality score; and other information

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

Notes and range

Literature K_oc range 2813-23391 mL g⁻¹

Notes and range

Source; quality score; and other information

GUS leaching potential index

Low leachability

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

Estimated concentrations of chemicals with Koc values greater than 9995 ml g⁻¹ are beyond the scope of the regression data used in SCI-GROW development. If there are concerns for such chemicals, a higher tier groundwater exposure assessment should be considered, regardless of the concentration returned by SCI-GROW

Potential for particle bound transport index

Potential for loss via drain flow

Bio-concentration factor

BCF (l kg⁻¹)

CT₅₀ (days)

Known metabolites

None

Terrestrial ecotoxicology

Source; quality score; and other information

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

L3 L = Pesticide manuals and hard copy reference books / other sources
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)

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

Anas platyrhynchos

Birds - Short term dietary (LC₅₀/LD₅₀)

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

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

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

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)

K3 K = Research datasets (e.g. Pandora, Demetra; these datasets no longer available). Norman Ecotoxicology database. (click here )
3 = Unverified data of known source

Apis mellifera

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

K3 K = Research datasets (e.g. Pandora, Demetra; these datasets no longer available). Norman Ecotoxicology database. (click here )
3 = Unverified data of known source

Apis mellifera

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)

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

Oncorhynchus mykiss

Fish - Chronic 21 day NOEC (mg l⁻¹)

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

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

Daphnia magna

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)

L2 L = Pesticide manuals and hard copy reference books / other sources
2 = Unverified data of unknown source

Unknown species

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)

L3 L = Pesticide manuals and hard copy reference books / other sources
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)

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

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

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

A3 A = Chromosome aberration (EFSA database)
3 = Negative

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

XNo, known not to cause a problem

Respiratory tract irritant

Skin sensitiser

?Possibly, status not identified

General human health issues

Harmful by inhalation, in contact with skin and if swallowed

Handling issues

Value and interpretation

Highly flammable

CLP classification 2013

Health: H302, H312, H319, H332

WHO Classification

U (Unlikely to present an acute hazard)

Waste disposal & packaging

Shelf-life, storage, stability and reactivity

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