imibenconazole (Ref: HF 6305) ** HF 8505 ** Translations

Environmental Fate - Ecotoxicology - Human Health

GENERAL INFORMATION

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

Introduction: 1994

EC Directive 1107/2009 (repealing 91/414):

Status	Not listed
Dossier rapporteur/co-rapporteur	Not applicable
Date inclusion expires	Not applicable

Approved for use () or known to be used () in the following European countries:

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

General status:

Pesticide type	Fungicide
Substance group	Triazole
Substance origin	Synthetic
Mode of action	Systemic with curative and preventative action
CAS RN	86598-92-7
EC number	-
CIPAC number	None allocated
US EPA chemical code	-
Chemical formula	C17H13Cl3N4S
SMILES	Clc3ccc(/N=C(\SCc1ccc(Cl)cc1)Cn2ncnc2)c(Cl)c3
International Chemical Identifier (InChI)	InChI=1/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
Structure diagram/image available?	Yes
Molecular mass (g mol-1)	411.7
IUPAC Name	4-chlorobenzyl (EZ)-N-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-yl)thioacetamidate
CAS Name	(4-chlorophenyl)methyl N-(2,4-dichlorophenyl)-1H-1,2,4-triazole-1-ethanimidothioate
Other status information	-
Herbicide Resistance Classification (HRAC)	Not applicable
Insecticide Resistance Classification (IRAC)	Not applicable
Fungicide Resistance Classification (FRAC)	3
Physical state	Pale yellow crystals
Related substances & organisms	-

Formulations:

Property	Value
Example manufacturers of products using this active	Hokko Chemical Industry Co. Ltd.
Example products using this active	Manage
UK LERAP status	No UK approval for use or outside scope
Formulation and application details	Available in a wide variety of formulations including emulsifiable concentrates, soluble concentrates, water dispersiable granules and wettable powders.

ENVIRONMENTAL FATE

Property		Value	Source/Quality Score/Other Information	Interpretation
Solubility - In water at 20oC (mg l-1)		1.7	L3	Low
Solubility - In organic solvents at 20oC (mg l-1)		1063000	L3 - Acetone	-
		580000	L3 - Benzene	-
		250000	L3 - Xylene	-
		120000	L3 - Methanol	-
Melting Point (oC)		89.7	L3	-
Boiling Point (oC)		-	-	-
Degradation point (oC)		-	-	-
Flashpoint (oC)		-	-	-
Octanol-water partition coefficient at pH 7, 20oC	P	8.71 X 1004	Calculated	-
	Log P	4.94	L3	High
Bulk density (g ml-1)/Specific gravity		-	-	-
Dissociation constant (pKa) at 25oC		-	-	-
		Note:
Vapour pressure at 25oC (mPa)		0.000085	L3	Non-volatile
Henry's law constant at 25oC (Pa m3 mol-1)		-	-	-
Henry's law constant at 20oC (dimensionless)		8.45 X 10-09	Calculated	Non-volatile
GUS leaching potential index		-0.14	Calculated	Low leachability
SCI-GROW groundwater index (µg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate	Value	5.35 X 10-03	Calculated	-
	Note	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		-	Calculated	Medium
Maximum UV-vis absorption L mol-1 cm-1		-	-	-
Surface tension (mN m-1)		-	-	-

Degradation:

Property		Value	Source/Quality Score/Other Information	Interpretation
Soil degradation (days) (aerobic)	DT50 (typical)	15	L3	Non-persistent
	DT50 (lab at 20oC)	12	L3	Non-persistent
	DT50 (field)	14.5	L3	Non-persistent
	DT90 (lab at 20oC)	-	-	-
	DT90 (field)	-	-	-
	Note	Literature values Lab studies DT50 range 4-20 days, field studies DT50 range 1-28 days
Aqueous photolysis DT50 (days) at pH 7	Value	-	-	-
	Note	-
Aqueous hydrolysis DT50 (days) at 20oC and pH 7	Value	88	L3	Moderately persistent
	Note	-
Water-Sediment DT50 (days)		-	-	-
Water phase only DT50 (days)		-	-	-

Soil adsorption and mobility:

Property		Value	Source/Quality Score/Other Information	Interpretation
Linear	Kd	-	L3	Non-mobile
	Koc	13120
	Notes and range	Literature Koc range 2813-23391 mL/g
Freundlich	Kf	-	-	-
	Kfoc	-
	1/n	-
	Notes and range	-
pH sensitivity		-

ECOTOXICOLOGY

Property		Value	Source/Quality Score/Other Information	Interpretation
Bio-concentration factor	BCF	-	-	-
	CT50 (days)	-		-
Bioaccumulation potential		-	-	-
Mammals - Acute oral LD50 (mg kg-1)		> 2800	L3 Rat	Low
Mammals - Short term dietary NOEL	(mg kg-1)	-	-	-
	(ppm diet)	-		-
Birds - Acute LD50 (mg kg-1)		2250	L3 Anas platyrhynchos	Low
Birds - Short term dietary (LC50/LD50)		-	-	-
Fish - Acute 96 hour LC50 (mg l-1)		0.67	L3 Oncorhynchus mykiss	Moderate
Fish - Chronic 21 day NOEC (mg l-1)		-	-	-
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1)		100	L3 Daphnia magna	Moderate
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)		1000	L2 Unknown species	Low
Algae - Chronic 96 hour NOEC, growth (mg l-1)		-	-	-
Honeybees - Acute 48 hour LD50 (µg bee-1)		125	L3 Oral	Low
Earthworms - Acute 14 day LC50 (mg kg-1)		1000	L3	Moderate
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1)		-	-	-
Other soil macro-organisms - e.g. Collembola	LR50product ha EC50product ha NOECproduct ha % Effect	-	-	-
Other arthropod (1)	LR50 g ha-1	-	-	-
	% Effect	-	-	-
Other arthropod (2)	LR50 g ha-1	-	-	-
	% Effect	-	-	-
Soil micro-organisms		-	-	-
Mesocosm study data	NOEAEC mg l-1	-	-	-
	NOEAEC mg l-1	-	-	-

HUMAN HEALTH AND PROTECTION

General:

Property		Value	Source/Quality Score/Other Information	Interpretation
Mammals - Acute oral LD50 (mg kg-1)		> 2800	L3 Rat	Low
Mammals - Dermal LD50 (mg kg-1 body weight)		> 2000	L3 Rat	-
Mammals - Inhalation LC50 (mg l-1)		1.02	L3 Rat	-
Other Mammal toxicity endpoints		-		-
ADI - Acceptable Daily Intake (mg kg-1bw day-1)		0.0085	L3	-
ARfD - Acute Reference Dose (mg kg-1bw day-1)		-	-	-
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1)		-	-	-
Dermal penetration studies (%)		-	-	-
Dangerous Substances Directive 76/464		-	-	-
Exposure Limits		-	-	-
Exposure Routes	Public	-
	Occupational	-
Examples of European MRLs (mg kg-1)	Value	-
	Note	For the EU pesticides database click here
Drinking Water MAC (µg l-1)		-	-	-

Health issues:

Carcinogen	Mutagen	Endocrine disrupter	Reproduction / development effects	Acetyl cholinesterase inhibitor	Neurotoxicant	Respiratory tract irritant	Skin irritant	Eye irritant
-	-	-	-		-	-	-	-
General human health issues		[No further information available]

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data

Handling issues:

Property		Value	Source/Quality Score/Other Information	Interpretation
General		[No information available]
EC Risk Classification		-
EC Safety Classification		-
WHO Classification		U	-	Unlikely to present an acute hazard
US EPA Classification (formulation)		No consensus across products or no products available	-	-
UN Number		-
Waste disposal & packaging		-

TRANSLATIONS