Chlorfenvinphos (Ref: OMS 166)

Chlorfenvinphos (Ref: OMS 166)	Last updated: 14/01/2023
(Also known as: clofenvinfos; CVP; OMS 1328; ENT 24969; CGA 26351)

SUMMARY

Chlorfenvinphos is a soil-applied insecticide. It has a moderate aqueous solubility and is miscible with many organic solvents. It is relatively volatile and there is some risk that it may leach to groundwater. It is moderately persistent in soil systems. It is highly toxic to mammals, an endocrine distruper, a neurotoxin and an inhibitor of cholinesterase. In addition there is some concern that it may bio-concentrate. Chlorfenvinphos is highly toxic to birds, honeybees and aquatic invertebrates. It is moderately toxic to fish and earthworms.

Data alerts

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; Drainflow: Slightly mobile	Ecotoxicity High alert: Birds acute ecotoxicity: High; Fish chronic ecotoxicity: High; Daphnia acute ecotoxicity: High; Daphnia chronic ecotoxicity: High; Bees acute oral ecotoxicity: High	Human health High alert: Mammals acute toxicity: High; Endocrine distrupter; Acetyl cholinesterase inhibitor; Neurotoxicant

GENERAL INFORMATION

Description

A soil applied insecticide used to control root-flies, rootworms and other soil pests. Also used as a sheep dip.

Example pests controlled

Ticks; Livestock flies; Mites; Root flies; Rootworms; Colorado beetle; Leafhoppers

Example applications

Potatoes; Rice; Vegetables including brassicas, swedes, turnips, carrots, onions; Citrus; Sugarcane; Sweetcorn

Efficacy & activity

Availability status

Current

Introduction & key dates

circa 1962

UK regulatory status

UK COPR regulatory status

Not approved

Date COPR inclusion expires

Expired

UK LERAP status

No UK approval for use

EC Regulation 1107/2009 (repealing 91/414)

EC Regulation 1107/2009 status

Not approved

Dossier rapporteur/co-rapporteur

Germany

Date EC 1107/2009 inclusion expires

Expired

EU Candidate for substitution (CfS)

Listed in EU database

Yes

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

Additional information

Also used in

Australia, S. Africa, South & Central America, kenya

Chemical structure

Isomerism

Exists in two geometric isomeric forms: alpha (cis) isomer and beta (trans) isomer.

Chemical formula

C₁₂H₁₄Cl₃O₄P

Canonical SMILES

CCOP(=O)(OCC)OC(=CCl)C1=C(C=C(C=C1)Cl)Cl

Isomeric SMILES

CCOP(=O)(OCC)O/C(=C\Cl)/C1=C(C=C(C=C1)Cl)Cl

International Chemical Identifier key (InChIKey)

FSAVDKDHPDSCTO-UHFFFAOYSA-N

International Chemical Identifier (InChI)

InChI=1S/C12H14Cl3O4P/c1-3-17-20(16,18-4-2)19-12(8-13)10-6-5-9(14)7-11(10)15/h5-8H,3-4H2,1-2H3/b12-8-

2D structure diagram/image available?

Yes

General status

Pesticide type

Insecticide, Acaricide, Veterinary substance

Substance groups

Organophosphate insecticide; Organophosphate acaricide

Minimum active substance purity

Known relevant impurities

Substance origin

Synthetic

Mode of action

Contact and stomach action. Acetylcholinesterase (AChE) inhibitor.

CAS RN

470-90-6

EC number

207-432-0

CIPAC number

US EPA chemical code

084101

PubChem CID

5377784

CLP index number

015-071-00-3

Molecular mass

359.6

PIN (Preferred Identification Name)

(1E)-2-chloro-1-(2,4-dichlorophenyl)ethenyl diethyl phosphate

IUPAC name

(EZ)-2-chloro-1-(2,4-dichlorophenyl)vinyl diethyl phosphate

CAS name

2-chloro-1-(2,4-dichlorophenyl)ethenyl diethyl phosphate

Other status information

WFD priority substance; Marine, Surface and Groundwater Pollutant; Chemical subject to PIC regulations; PAN Bad Actor Chemical; Subject to the provisions of the UK Poisons Act 1972

Relevant Environmental Water Quality Standards

EU Directive 2008/105/EC EQS surface waters: annual average 0.1 µg l⁻¹; max measured 0.3 µg l⁻¹

Herbicide Resistance Classification (HRAC)

Not applicable

Herbicide Resistance Classification (WSSA)

Not applicable

Insecticide Resistance Classification (IRAC)

Fungicide Resistance Classification (FRAC)

Not applicable

Examples of recorded resistance

Ceutorhynchus assimilis, Culex pipiens pipiens, Meligethes aeneus, Rhizoglyphus robini, Spodoptera litura, plus others

Physical state

Colourless to amber liquid

Formulations

Property

Value

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

BASF
Agro-Care
Zagro Singapore Pte. Ltd.
Kenogard

Example products using this active

Vinylphate
Birlane
Steladone
Supona
Apachlor
Haptarax

Formulation and application details

Available in a variety of formulations including emulsifiable concentrates, granules, seed treatments and wettable powders.

ENVIRONMENTAL FATE

Property

Value

Source; quality score; and other information

Interpretation

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

145

Moderate

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

Miscible

Acetone

Miscible

Ethanol

Miscible

Xylene

Miscible

Dichloromethane

Melting point (°C)

-20

Boiling point (°C)

167

Degradation point (°C)

Flashpoint (°C)

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

6.31 X 10⁰³

Calculated

Log P

3.8

High

Fat solubility of residues

Solubility

Soluble

Data type

Observed in metabolism and farm animal feeding studies

Density (g ml⁻¹)

1.36

Dissociation constant pKa) at 25 °C

Vapour pressure at 20 °C (mPa)

0.53

Low volatility

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)

Degradation

Property

Value

Source; quality score; and other information

Interpretation

General biodegradability

Soil degradation (days) (aerobic)

DT₅₀ (typical)

Moderately persistent

DT₅₀ (lab at 20 °C)

Moderately persistent

DT₅₀ (field)

Moderately persistent

DT₉₀ (lab at 20 °C)

DT₉₀ (field)

DT₅₀ modelling endpoint

Note

Lab studies DT₅₀ range 6-98 days, field study range 12-45 days; FAO state DT₅₀ 10-45 days

Dissipation rate RL₅₀ on plant matrix

Value

Note

Dissipation rate RL₅₀ on and in plant matrix

Value

20.2

Note

Lemon fruit, n=1

Aqueous photolysis DT₅₀ (days) at pH 7

Value

Note

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

Value

125

Persistent

Note

pH and temperature sensitive: DT₅₀ 29 days at pH 1 and 38 °C, 17 days at pH 9 and 38 °C, 1.3 hours at pH 13 and 20 °C, (L3)

Water-sediment DT₅₀ (days)

Water phase only DT₅₀ (days)

Moderately fast

Soil adsorption and mobility

Property

Value

Source; quality score; and other information

Interpretation

Linear

K_d

Slightly mobile

K_oc

680

Notes and range

Other literature data K_oc 295 mL g⁻¹ (R4)

Freundlich

K_f

K_foc

¹/_n

Notes and range

pH sensitivity

Fate indices

Property

Value

Source; quality score; and other information

Interpretation

GUS leaching potential index

1.72

Calculated

Low leachability

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

Value

5.04 X 10^-02

Calculated

Note

Potential for particle bound transport index

Low

Calculated

Potential for loss via drain flow

Slightly mobile

Calculated

Bio-concentration factor

BCF (l kg⁻¹)

250

Threshold for concern

CT₅₀ (days)

Not available

Known metabolites

None

ECOTOXICOLOGY

Terrestrial ecotoxicology

Property

Value

Source; quality score; and other information

Interpretation

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

Rat

High

Mammals - Short term dietary NOEL

(mg kg⁻¹)

Rat

(ppm diet)

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

Birds - Acute LD₅₀ (mg kg⁻¹)

Colinus virginianus

High

Birds - Short term dietary (LC₅₀/LD₅₀)

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

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

130

Moderate

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

Soil micro-organisms

Collembola

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)

4.1

Apis mellifera

Moderate

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

0.55

Apis mellifera

High

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

Chronic

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 pollinators (1)

Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)

Mode of exposure

Other pollinators (2)

Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)

Mode of exposure

Beneficial insects (Ladybirds)

Beneficial insects (Lacewings)

Harmless

Chrysoperla carnea

Beneficial insects (Parasitic wasps)

Harmful

Typhlodromus pyri

Beneficial insects (Predatory mites)

Beneficial insects (Ground beetles)

Aquatic ecotoxicology

Property

Value

Source; quality score; and other information

Interpretation

Fish - Acute 96 hour LC₅₀ (mg l⁻¹)

1.1

Salmonidae

Moderate

Fish - Chronic 21 day NOEC (mg l⁻¹)

0.03

Unknown species

Moderate

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

0.00025

Daphnia magna

High

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

0.0001

Daphnia magna

High

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)

1.36

Scenedemus subspicatus

Moderate

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

Unknown species

Moderate

Mesocosm study data

NOEAEC mg l⁻¹

HUMAN HEALTH AND PROTECTION

General

Property

Value

Source; quality score; and other information

Interpretation

Threshold of Toxicological Concern (Cramer Class)

High (class III)

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

Rat

High

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

Rabbit

Mammals - Inhalation LC₅₀ (mg l⁻¹)

0.05

Rat

Other Mammal toxicity endpoints

Intraperitoneal LD₅₀ = 87.0 mg kg⁻¹

Mouse

Intravenous LD₅₀ = 87.0 mg kg⁻¹

Mouse

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

0.0005

JMPR 1994

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

List I; List II

Exposure Routes

Public

Occupational

Dermal and inhalation during pesticide handling
Source: US EPA

MRLs

European

EU MRL pesticide database

Great Britain

GB MRL Register

Notes

Drinking Water Standards

Drinking Water MAC (μg l⁻¹)

Mammalian dose elimination route and rate

Majority excreted in the urine, much less in the faeces. Some also lost from the lungs.

Health issues

Specific human health issues

Carcinogen

Genotoxic

Endocrine disruptor

No data found

; ; ; ;

Reproduction / development effects

Acetyl cholinesterase inhibitor

Neurotoxicant

No data found

Respiratory tract irritant

Skin irritant

Skin sensitiser

No data found

Eye irritant

Phototoxicant

No data found

General human health issues

May cause bradycardia or tachycardia
May cause Loss of muscle coordination, slurring of speech
May cause mental confusion, disorientation and drowsiness
Endocrine issues - Weak estrogen effect

Handling issues

Property

Value and interpretation

General

Prevent generation of mists
Not expected to autoignite; Not highly flammable

CLP classification 2013

Health: H300, H311
Environment: H400, H410

WHO Classification

Ib (Highly hazardous)

UN Number

3018

Waste disposal & packaging

TRANSLATIONS

Language

Name

English

chlorfenvinphos

French

chlorfenviphos

German

Chlorfenvinphos

Danish

chlorfenvinphos

Italian

clorfenvinfos

Spanish

clorfenvinfos

Greek

chlorfenvinphos

Polish

chlorfenwinfos

Swedish

klorfenvinfos

Hungarian

Dutch

chloorfenvinfos

Record last updated:	14/01/2023
Contact:	aeru@herts.ac.uk
Please cite as:	Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242