butenachlor (Ref: KH-218) ** Translations

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GENERAL INFORMATION
for butenachlor

Description: A selective, soil-applied herbicide used for control of grass and some broad-leaved weeds

Example pests controlled: Barnyardgrass; Crabgrass; Goosegrass; Thistles

Example applications: Sorghum; Maize; Rice; Peanuts

Availability status: Unknown

Introduction & key dates: 1976, introduced

EC Regulation 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

HR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

General status:

Pesticide type	Herbicide
Substance group	Chloroacetanilide
Minimum active substance purity	-
Known relevant impurities	-
Substance origin	Synthetic
Mode of action	Inhibits cell division by blocking protein synthesis
CAS RN	87310-56-3
EC number	-
CIPAC number	-
US EPA chemical code	-
Chiral molecule	No
Chemical formula	C17H24ClNO2
SMILES	C(=O)(CCl)N(c1c(cccc1CC)CC)COC/C=C\C
International Chemical Identifier key (InChIKey)	HZDIJTXDRLNTIS-DAXSKMNVSA-N
International Chemical Identifier (InChI)	InChl=1S/C17H24ClNO2/c1-4-7-11-21-13-19(16(20)12-18)17-14(5-2)9-8-10-15(17)6-3/h4,7-10H,5-6,11-13H2,1-3H3/b7-4-
Structure diagram/image available?	Yes
Molecular mass (g mol-1)	309.83
PIN (Preferred Identification Name)	N-{[(2Z)-but-2-en-1-yloxy]methyl}-2-chloro-N-(2,6-diethylphenyl)acetamide
IUPAC name	(Z)-N-but-2-enyloxymethyl-2-chloro-2',6'-diethylacetanilide
CAS name	N-(((2Z)-2-butenyloxy)methyl)-2-chloro-N-(2,6-diethylphenyl)acetamide
Other status information	-
Herbicide Resistance Classification (HRAC)	K3
Herbicide Resistance Classification (WSSA)	-
Insecticide Resistance Classification (IRAC)	Not applicable
Fungicide Resistance Classification (FRAC)	Not applicable
Examples of recorded resistance	-
Physical state	Pale yellow liquid
Related substances & organisms	-

Formulations:

Property	Value
Example manufacturers & suppliers of products using this active now or historically	Agro-Kanesho Co.
Example products using this active	Diphenox
UK LERAP status	No UK approval for use or outside scope
Formulation and application details	Usually supplied as a granular formulation.

ENVIRONMENTAL FATE
for butenachlor

Property		Value	Source/Quality Score/Other Information	Interpretation
Solubility - In water at 20oC (mg l-1)		29	L3	Low
Solubility - In organic solvents at 20oC (mg l-1)		Miscible	L3 - Acetone	-
		Miscible	L3 - Ethanol	-
		Miscible	L3 - Ethyl acetate	-
		Miscible	L3 - Hexane	-
Melting point (oC)		12.9	L3	-
Boiling point (oC)		167	L3	-
Degradation point (oC)		-	-	-
Flashpoint (oC)		-	-	-
Octanol-water partition coefficient at pH 7, 20oC	P	3.24 X 1003	Calculated	-
	Log P	3.51	L3	High
Bulk density (g ml-1)/Specific gravity		1.10	L3	-
Dissociation constant (pKa) at 25oC		-	-	-
		Note:
Vapour pressure at 25oC (mPa)		0.93	L3	Low volatility
Henry's law constant at 25oC (Pa m3 mol-1)		1.0 X 10-02	L3	Non-volatile
Henry's law constant at 20oC (dimensionless)		4.08 X 10-06	Calculated	Moderately volatile
GUS leaching potential index		-	-	-
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate	Value	-	-	-
	Note	-
Potential for particle bound transport index		-	-	-
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)	3.5	L3	Non-persistent
	DT50 (lab at 20oC)	3.5	L3	Non-persistent
	DT50 (field)	-	-	-
	DT90 (lab at 20oC)	-	-	-
	DT90 (field)	-	-	-
	Note	General literature states DT50 range 2-5 days
Plant matrix DT50 (days)	Value	-	-	-
	Note	-
Aqueous photolysis DT50 (days) at pH 7	Value	-	-	-
	Note	-
Aqueous hydrolysis DT50 (days) at 20oC and pH 7	Value	-	-	-
	Note	-
Water-sediment DT50 (days)		-	-	-
Water phase only DT50 (days)		-	-	-

Soil adsorption and mobility:

Property		Value	Source/Quality Score/Other Information	Interpretation
Linear	Kd	-	-	-
	Koc	-
	Notes and range	-
Freundlich	Kf	-	-	-
	Kfoc	-
	1/n	-
	Notes and range	-
pH sensitivity		-

ECOTOXICOLOGY
for butenachlor

Property		Value	Source/Quality Score/Other Information	Interpretation
Bio-concentration factor	BCF (l kg-1)	-	-	-
	CT50 (days)	-		-
Mammals - Acute oral LD50 (mg kg-1)		> 2000	L3 Rat	Low
Mammals - Short term dietary NOEL	(mg kg-1)	-	-	-
	(ppm diet)	-		-
Birds - Acute LD50 (mg kg-1)		> 2000	L3 Colinus Virginianus	Low
Birds - Short term dietary (LC50/LD50)		-	-	-
Fish - Acute 96 hour LC50 (mg l-1)		0.48	L3 Cyprinus carpio	Moderate
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)		-	-	-
Non-target plants		-	-	-
		-	-	-
Algae - Acute 72 hour EC50, growth (mg l-1)		-	-	-
Algae - Chronic 96 hour NOEC, growth (mg l-1)		-	-	-
Honeybees	Contact acute 48 hour LD50 (μg bee-1)	-	-	-
	Oral acute 48 hour LD50 (μg bee-1)	-	-	-
	Unknown mode acute 48 hour LD50 (μg bee-1)	-	-	-
Earthworms - Acute 14 day LC50 (mg kg-1)		-	-	-
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1)		-	-	-
Other soil macro-organisms - e.g. Collembola	LR50 / EC50 / NOEC / % 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
for butenachlor

General:

Property		Value	Source/Quality Score/Other Information	Interpretation
Threshold of Toxicological Concern (Cramer Class)		High (class III)	-	-
Mammals - Acute oral LD50 (mg kg-1)		> 2000	L3 Rat	Low
Mammals - Dermal LD50 (mg kg-1 body weight)		-	-	-
Mammals - Inhalation LC50 (mg l-1)		> 3.34	L3 Rat, 4 hr	-
Other Mammal toxicity endpoints		-		-
ADI - Acceptable Daily Intake (mg kg-1bw day-1)		-	-	-
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	-
European MRLs		Click here for the EU MRL pesticide database
Drinking Water MAC (μg l-1)		-	-	-

Health issues:

Carcinogen	Mutagen	Endocrine disrupter	Reproduction / development effects	Cholinesterase inhibitor	Neurotoxicant
-	-	-
Respiratory tract irritant	Skin irritant	Skin sensitiser	Eye irritant	Phototoxicant
-	-	-	-	-
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 found

Handling issues:

Property		Value	Source/Quality Score/Other Information	Interpretation
General		No information available
CLP classification 2013		-
EC Risk Classification		-
EC Safety Classification		-
WHO Classification		II	-	Moderately hazardous
US EPA Classification (formulation)		-	-
UN Number		-
Waste disposal & packaging		-

TRANSLATIONS
for butenachlor

Language	Name
English	butenachlor
French	butenachlore
German	-
Danish	-
Italian	-
Spanish	-
Greek	-
Slovenian	-
Polish	-
Swedish	-
Hungarian	-
Dutch	-

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Record last updated: Monday 04 January 2016
Contact: aeru@herts.ac.uk