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fenthion (Ref: OMS 2)
** MPP ** ENT 25540 ** Bayer 29493 ** S-1752 ** BAY 29493 ** DMTP ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home
Further data may be found in the VSDB

SUMMARY

Fenthino is an insecticide that is no longer approved for use in the EU. It has a low water solubility but is generally highly soluble in organic solvents. It is volatile and is not expected to leach to groundwater. Its persistence in soil and water systems depends on local conditions. It is moderately toxic to mammals and a cholinesterase inhibitor. Fenthion is highly toxic to birds and honeybees and has a high to moderate toxicity to most aquatic species and earthworms.

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for fenthion

Description: A broad spectrum insecticide used to control various sucking and biting insect pests in a range of agricultural, commercial and domestic situations. It is also used in veterinary medicine and for bird control

Example pests controlled: Fruit flies, Leafhoppers, Leaf miners, Stem borers, Codling moth, Mosquitoes, Pigeons, Weaver birds

Example applications: Fruit including apples, pears, avocadoes, grapes, stone fruit; Peppers; Ornamental trees, flowers and shrubs

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1960, first reported & introduced

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Greece
Date inclusion expires Expired
EU Candidate for substitution (CfS) -
Listed in EU database Yes

Approved for use () or known to be used () in the following European countries: Click to access a note on the approvals information on this site

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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C10H15O3PS2
Canonical SMILES CC1=C(C=CC(=C1)OP(=S)(OC)OC)SC
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) PNVJTZOFSHSLTO-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C10H15O3PS2/c1-8-7-9(5-6-10(8)16-4)13-14(15,11-2)12-3/h5-7H,1-4H3
Structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Insecticide, Veterinary substance, Avicide
Substance group Organophosphate
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Contact, stomach and respiratory action. Cholinesterase inhibitor.
CAS RN 55-38-9
EC number 200-231-9
CIPAC number 79
US EPA chemical code 053301
PubChem CID 3346
Molecular mass (g mol-1) 278.33
PIN (Preferred Identification Name) O,O-dimethyl O-[3-methyl-4-(methylsulfanyl)phenyl] phosphorothioate
IUPAC name O,O-dimethyl O-4-methylthio-m-tolyl phosphorothioate
CAS name O,O-dimethyl O-(3-methyl-4-(methylthio)phenyl) phosphorothioate
Other status information Severe Marine Pollutant; Evidence of use in third world countries; Chemical subject to PIC regulations; Highly toxic to birds
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 1B
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance Many recorded cases
mosquitoes
Bactrocera dorsalis
Myzus persicae
Panonychus ulmi
Rhizoglyphus robini
Physical state Colourless oily liquid
Related substances & organisms -

Formulations:
Property Click here for information on the general product and branding information used on this site Value
Example manufacturers & suppliers of products using this active now or historically
  • Bayer CropScience
  • AgroCare
  • King Tech Corp
  • Mobay
Example products using this active
  • Baycid
  • Baytex
  • Lebaycid
  • Queletox
  • Pilartex
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Available in a wide range of formulations including dustable powders, emulsifiable concentrates, granules, concentrates, ULV liquids and wettable powders.


ENVIRONMENTAL FATE

for fenthion

Property Click here for information on the parameters used to describe environmental fate on this site Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with fate data Interpretation Click here for information on the way in which we interpret environmental fate data
Solubility - In water at 20oC (mg l-1) 4.2 H4 Low
Solubility - In organic solvents at 20oC (mg l-1) 100000 L3 - Hexane -
250000 L3 - Toluene -
250000 L3 - Dichloromethane -
250000 L3 - Isopropanol -
Melting point (oC) 7.5 AC4 -
Boiling point (oC) 90 E3 -
Degradation point (oC) - - -
Flashpoint (oC) 170 E3 -
Octanol-water partition coefficient at pH 7, 20oC P 6.92 X 1004 Calculated -
Log P 4.84 H4 High
Bulk density (g ml-1)/Specific gravity 1.25 AC4 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 0.37 H4 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 2.40 X 10-02 H4 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 1.26 Calculated Low leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Click here for a note on the limitations of the SCI-GROW index Value 2.77 X 10-02 Calculated -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated Medium
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

Degradation:
Property Click here for information on the parameters used to describe substance degradation Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with degradation data Interpretation Click here for information on the way in which we interpret substance degradation data
General biodegradability -
Soil degradation (days) (aerobic) DT50 (typical) 22 W4 Non-persistent
DT50 (lab at 20oC) 34 DW4 Moderately persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Data variable DT50 ranges 1(aerobic) - 34 days
Dissipation rate RL50 on plant matrix Value 6.6 R4 -
Note Published literature RL50 range 5.6-7.6 days, grape berries, n=2; Grape berries in cold storage RL50 range 42-45 days, n=2
Dissipation rate RL50 on and in plant matrix Value 4.4 R4 -
Note Published literature RL50 range 1.0-8.0 days, 6 field crops, various matrices, n=12
Aqueous photolysis DT50 (days) at pH 7 Value 0.4 AC4 Fast
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable W4 -
Note -
Water-sediment DT50 (days) 92 Q3 Moderately fast
Water phase only DT50 (days) - - -

Soil adsorption and mobility:
Property Click here for information on the parameters used to describe substance adsorption and mobility Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with adsorption and mobility data Interpretation Click here for information on the way in which we interpret substance adsorption and mobility
Linear Kd - G3 Slightly mobile
Koc 1500
Notes and range -
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 1107/2009 relevancy Click here for further information on 1107/2009 relevancy
fenthion sulfoxide (Ref: BAY S 2281) Soil   -   -
fenthion sulfone Soil   -   -


ECOTOXICOLOGY

for fenthion

Property Click here for information on the parameters used to describe substance ecotoxicology Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with ecotoxicology data Interpretation Click here for information on the way in which we interpret substance ecotoxicology
Bio-concentration factor BCF (l kg-1) 154 R3 (Whole body, Other literature Log BCF range 1.0-2.3 (R3)) Threshold for concern
CT50 (days) 5 -
Mammals - Acute oral LD50 (mg kg-1) ~ 250 AC4 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 5 -
Birds - Acute LD50 (mg kg-1) 7.2 E3 Colinus virginianus High
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 0.8 E3 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.0057 E3 Daphnia magna High
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 0.00018 F4 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) - - -
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 1.79 L3 Scenedemus subspicatus Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) > 0.308 F3 High
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) 375 E3 Eisenia foetida Moderate
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 Nitrogen mineralisation: >25% effect
Carbon mineralisation: No significant adverse effect
AC4
Dose: 10 uL/kg soil, 20deg C
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for fenthion

General:
Property Click here for information on the parameters used to describe human health and protection issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with human health and protection data Interpretation Click here for information on the way in which we interpret human health and protection data
Threshold of Toxicological Concern (Cramer Class) Click here for a note on the limitations of the Cramer class High (class III) - -
Mammals - Acute oral LD50 (mg kg-1) ~ 250 AC4 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) 1680 AC4 Rat -
Mammals - Inhalation LC50 (mg l-1) 1.2 AC4 Rat -
Other Mammal toxicity endpoints Intraperitoneal LD50 = 260 mg kg-1 V3 Rat -
Intravenous LD50 = 320 mg kg-1 V3 Mouse -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.007 JMPR 1995 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.01 JMPR 1997 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 List I; List II - -
Exposure Limits - - -
Exposure Routes Public -
Occupational Ingestion main poisoning route
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
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 Harmful in contact with skin or if inhaled or swallowed
May harm central nervous, cardiovascular, and respiratory systems

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

Handling issues:
Property Click here for information on the parameters used to describe substance handling issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with data on handling issues Interpretation Click here for information on the way in which we interpret data on handling issues
General Click here for a description of the International Maritime Dangerous Goods (IMDG) codes No information available
CLP classification 2013 Health: H302, H312, H331, H341
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases T - Toxic: R23, R48/25, R68
Xn - Harmful: R21/22
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S1/2, S36/37, S45, S60, S61
WHO Classification II - Moderately hazardous
US EPA Classification (formulation) II - Warning - Moderately toxic
UN Number 3018
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for fenthion

Language Name
English fenthion
French fenthion
German Fenthion
Danish fenthion
Italian fention
Spanish fention
Greek fenthion
Slovenian fention
Polish fention
Swedish -
Hungarian fention
Dutch fenthion

Record last updated: Wednesday 23 May 2018
Contact: aeru@herts.ac.uk