dicrotophos (Ref: OMS 253) ** ENT 24482 ** SD 3546 ** carbomicron ** dicrotofos ** C709 ** Translations

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GENERAL INFORMATION

Description: An insecticide used to control sucking and chewing pests, boring insects and mites

Introduction: circa 1965

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

Status	Excluded from Annex 1
Dossier rapporteur/co-rapporteur	-
Date inclusion expires	Expired

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

Also registered in: USA

General status:

Pesticide type	Insecticide, Acaricide
Substance group	Organophosphate
Substance origin	Synthetic
Mode of action	Systemic with contact and stomach action. Acetylcholinesterase (AChE) inhibitor.
CAS RN	141-66-2
EC number	205-494-3
CIPAC number	299
US EPA chemical code	035201
Chemical formula	C8H16NO5P
SMILES	O=P(O/C(=C/C(=O)N(C)C)C)(OC)OC
International Chemical Identifier (InChI)	InChI=1/C8H16NO5P/c1-7(6-8(10)9(2)3)14-15(11,12-4)13-5/h6H,1-5H3/b7-6+
Structure diagram/image available?	Yes
Molecular mass (g mol-1)	237.19
IUPAC Name	(E)-2-dimethylcarbamoyl-1-methylvinyl dimethyl phosphate
CAS Name	(1E)-3-(dimethylamino)-1-methyl-3-oxo-1-propenyl dimethyl phosphate
Other status information	Potential groundwater pollutant; Marine Pollutant
Herbicide Resistance Classification (HRAC)	Not applicable
Insecticide Resistance Classification (IRAC)	1B
Fungicide Resistance Classification (FRAC)	Not applicable
Physical state	Yellow brown liquid
Related substances & organisms	-

Formulations:

Property	Value
Example manufacturers of products using this active	Amvac Chemical Co
Example products using this active	Carbicron Ektafos Carbomicron
UK LERAP status	No UK approval for use or outside scope
Formulation and application details	Often supplied as a water soluble concentrate or ULV spray.

ENVIRONMENTAL FATE

Property		Value	Source/Quality Score/Other Information	Interpretation
Solubility - In water at 20oC (mg l-1)		1000000	V3 - @ 25 DegC	High
Solubility - In organic solvents at 20oC (mg l-1)		Miscible	L3 - Acetone	-
		Miscible	L3 - Xylene	-
		Miscible	L3 - Dichloromethane	-
Melting Point (oC)		-	-	-
Boiling Point (oC)		-	-	-
Degradation point (oC)		-	-	-
Flashpoint (oC)		-	-	-
Octanol-water partition coefficient at pH 7, 20oC	P	3.16 X 10-01	Calculated	-
	Log P	-0.5	H4	Low
Bulk density (g ml-1)/Specific gravity		1.22	L3	-
Dissociation constant (pKa) at 25oC		-	-	-
		Note:
Vapour pressure at 25oC (mPa)		9.3	H4	Volatile
Henry's law constant at 25oC (Pa m3 mol-1)		5.10 X 10-06	H4	Non-volatile
Henry's law constant at 20oC (dimensionless)		9.06 X 10-10	Calculated	Non-volatile
GUS leaching potential index		3.08	Calculated	High leachability
SCI-GROW groundwater index (µg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate	Value	2.83 X 10-01	Calculated	-
	Note	-
Potential for particle bound transport index		-	Calculated	Low
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)	28	M4	Non-persistent
	DT50 (lab at 20oC)	-	-	-
	DT50 (field)	-	-	-
	DT90 (lab at 20oC)	-	-	-
	DT90 (field)	-	-	-
	Note	Best available data
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	-	M3	Moderately mobile
	Koc	75
	Notes and range	-
Freundlich	Kf	-	-	-
	Kfoc	-
	1/n	-
	Notes and range	-
pH sensitivity		-

Key metabolites:

Metabolite		Formation Medium	Estimated Maximum Occurrence Fraction	91/414 Relevancy
butanamide		Soil		-

ECOTOXICOLOGY

Property		Value	Source/Quality Score/Other Information	Interpretation
Bio-concentration factor	BCF	75	Q2 Estimated	Low potential
	CT50 (days)	Not available		-
Bioaccumulation potential		-	Calculated	Low
Mammals - Acute oral LD50 (mg kg-1)		17	L3 Rat	High
Mammals - Short term dietary NOEL	(mg kg-1)	0.05	L2 Rat, 2 year	High
	(ppm diet)	1		-
Birds - Acute LD50 (mg kg-1)		9.63	F4 Anas platyrhynchos	High
Birds - Short term dietary (LC50/LD50)		-	-	-
Fish - Acute 96 hour LC50 (mg l-1)		6.3	F4 Oncorhynchus mykiss	Moderate
Fish - Chronic 21 day NOEC (mg l-1)		-	-	-
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1)		0.013	F3 Daphnia magna	High
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1)		-	-	-
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1)		0.077	F3 Americamysis bahia	High
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)		-	-	-
Honeybees - Acute 48 hour LD50 (µg bee-1)		0.068	F4 Oral	High
Earthworms - Acute 14 day LC50 (mg kg-1)		-	-	-
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)		17	L3 Rat	High
Mammals - Dermal LD50 (mg kg-1 body weight)		110	L3 Rat	-
Mammals - Inhalation LC50 (mg l-1)		0.09	L3 Rat	-
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		List II	-	-
Exposure Limits		-	-	-
Exposure Routes	Public	-
	Occupational	[Rapidly absorbed through the skin, PPE/PPC essential]
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		[Toxic if ingested, inhaled or by skin contact]

: 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		[T+ - Very toxic: R28], [T - Toxic: R24], [N - Dangerous for the environment: R50, R53]
EC Safety Classification		S1/2, S28, S36/37, S45, S60, S61
WHO Classification		Ib	-	Highly hazardous
US EPA Classification (formulation)		I	-	Danger - Highly toxic
UN Number		3018
Waste disposal & packaging		-

TRANSLATIONS