| fensulfothion (Ref: ENT 24945) |
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GENERAL INFORMATION 
for fensulfothion
Description: Largely obsolete compound formerly used against soil insects in a wide range of crops
Example pests controlled: Soil nematodes, Soil-borne insects
Example applications: Field crops; Vegetables; Fruit; Turf; Ornamentals
Efficacy & activity: -
Availability status: Obsolete
Introduction & key dates: 1967, first reported
EC Regulation 1107/2009 (repealing 91/414):
| Status | Not listed |
| Dossier rapporteur/co-rapporteur | Not applicable |
| Date inclusion expires | Not applicable |
| EU Candidate for substitution (CfS) | - |
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 |
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General status:
| Pesticide type | Insecticide, Nematicide | |||
| Substance group | Organophosphate | |||
| Minimum active substance purity | - | |||
| Known relevant impurities | - | |||
| Substance origin | Synthetic | |||
| Mode of action | Cholinesterase inhibitor. Contact action. | |||
| CAS RN | 115-90-2 | |||
| EC number | 204-114-3 | |||
| CIPAC number | 303 | |||
| US EPA chemical code | 032701 | |||
| Isomerism | Chiral, a specific isomer or a derivative of a chiral molecule | |||
| Chemical formula | C11H17O4PS2 | |||
| SMILES | S=P(Oc1ccc(cc1)S(=O)C)(OCC)OCC | |||
| International Chemical Identifier key (InChIKey) | XDNBJTQLKCIJBV-UHFFFAOYSA-N | |||
| International Chemical Identifier (InChI) | InChI=1S/C11H17O4PS2/c1-4-13-16(17,14-5-2)15-10-6-8-11(9-7-10)18(3)12/h6-9H,4-5H2,1-3H3 | |||
| Structure diagram/image available? | Yes | |||
| Molecular mass (g mol-1) | 308.35 | |||
| PIN (Preferred Identification Name) | O,O-diethyl O-[4-(methanesulfinyl)phenyl] phosphorothioate | |||
| IUPAC name | O,O-diethyl O-4-methylsulfinylphenyl phosphorothioate | |||
| CAS name | O,O-diethyl O-(4-(methylsulfinyl)phenyl) phosphorothioate | |||
| Other status information | Marine Pollutant | |||
| 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 | Delia antiqua Diabrotica undecimpunctata Culex pipiens |
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| Physical state | Yellow to brown coloured liquid | |||
| Related substances & organisms | - | |||
Formulations:
| Property |
Value | |||
| Example manufacturers & suppliers of products using this active now or historically |
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| Example products using this active |
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| UK LERAP status | No UK approval for use or outside scope | |||
| Formulation and application details | Available in a wide range of formulations including emulsifiable concentrates and granules. | |||
ENVIRONMENTAL FATE
for fensulfothion
| Property |
Value | Source/Quality Score/Other Information |
Interpretation |
|
| Solubility - In water at 20oC (mg l-1) | 1540 | F3 | High | |
| Solubility - In organic solvents at 20oC (mg l-1) | - | - | - | |
| Melting point (oC) | 25 | V3 | - | |
| Boiling point (oC) | 138 | L3 | - | |
| Degradation point (oC) | - | - | - | |
| Flashpoint (oC) | - | - | - | |
| Octanol-water partition coefficient at pH 7, 20oC | P | 1.70 X 1002 | Calculated | - |
| Log P | 2.23 | V3 | Low | |
| Bulk density (g ml-1)/Specific gravity | 1.20 | F3 | - | |
| Dissociation constant (pKa) at 25oC | - | - | - | |
| Note: | ||||
| Vapour pressure at 25oC (mPa) | 6.7 | Q3 | Moderately volatile | |
| Henry's law constant at 25oC (Pa m3 mol-1) | - | - | - | |
GUS leaching potential index  |
2.34 | Calculated | Transition state | |
| SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate |
Value | 7.66 X 10-02 | 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 |
General biodegradability | - |
| Soil degradation (days) (aerobic) | DT50 (typical) | 30 | F3 | Moderately persistent |
| DT50 (lab at 20oC) | 14 | F3 | Non-persistent | |
| DT50 (field) | - | - | - | |
| DT90 (lab at 20oC) | - | - | - | |
| DT90 (field) | - | - | - | |
| DT50 modelling endpoint | - | - | - | |
| Note | General literature DT50 range 14-180 days | |||
| Dissipation rate RL50 on plant matrix | Value | - | - | - |
| Note | - | |||
| Dissipation rate RL50 on and in plant matrix | Value | 3.0 | R4 | - |
| Note | Published literature RL50 range 2.7-3.3 days, leaves of 2 field grown crops, n=2 | |||
| Aqueous photolysis DT50 (days) at pH 7 | Value | - | - | - |
| Note | - | |||
| Aqueous hydrolysis DT50 (days) at 20oC and pH 7 | Value | 72.5 | Q3 | 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 | - | Q3 | Moderately mobile |
| Koc | 91 | |||
| Notes and range | General literature Koc range 77-105 mL/g | |||
| Freundlich | Kf | - | - | - |
| Kfoc | - | |||
| 1/n | - | |||
| Notes and range | - | |||
| pH sensitivity | - | |||
ECOTOXICOLOGY
for fensulfothion
| Property |
Value | Source/Quality Score/Other Information |
Interpretation |
|
| Bio-concentration factor | BCF (l kg-1) | Low risk | Q3 Based on LogP < 3 | Low potential |
| CT50 (days) | - | - | ||
| Mammals - Acute oral LD50 (mg kg-1) | 2.2 | L3 Rat | High | |
| Mammals - Short term dietary NOEL | (mg kg-1) | - | - | - |
| (ppm diet) | - | - | ||
| Birds - Acute LD50 (mg kg-1) | 1.2 | V3 Coturnix japonica | High | |
| Birds - Short term dietary (LC50/LD50) | - | - | - | |
| Fish - Acute 96 hour LC50 (mg l-1) | 0.072 | F4 Lepomis macrochirus | High | |
| 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) | 0.337 | Q3 | 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 | 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 fensulfothion
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) | 2.2 | L3 Rat | High | |
| Mammals - Dermal LD50 (mg kg-1 body weight) | 3.0 | V3 Rat | - | |
| Mammals - Inhalation LC50 (mg l-1) | 0.113 | V3 Rat | - | |
| Other Mammal toxicity endpoints | - | - | ||
| ADI - Acceptable Daily Intake (mg kg-1bw day-1) | 0.003 | JMPR 1982 | - | |
| 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 I | - | - | |
| Exposure Limits | [TLV TWA: 0.01 mg/m³] | Q3 | - | |
| Exposure Routes | Public | - | ||
| Occupational | Absorbed through the skin, by inhalation and from the gastrointestinal tract | |||
| 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 | |||
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| Respiratory tract irritant | Skin irritant | Skin sensitiser | Eye irritant | Phototoxicant | ||||
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| General human health issues | Very toxic | |||||||
: 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 |
T+ - Very toxic: R27, R28 N - Dangerous for the environment: R50, R53 |
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| EC Safety Classification |
S1/2, S23, S28, S36/37, S45, S60, S61 | |||
| WHO Classification | Ia | - | Extremely hazardous | |
| US EPA Classification (formulation) | No consensus across products or no products available | - | - | |
| UN Number | - | |||
| Waste disposal & packaging |
- | |||
TRANSLATIONS
for fensulfothion
| Language | Name |
| English | fensulfothion |
| French | fensulfothion |
| German | Fensulfothion |
| Danish | - |
| Italian | - |
| Spanish | fensulfotion |
| Greek | - |
| Slovenian | - |
| Polish | - |
| Swedish | - |
| Hungarian | - |
| Dutch | - |
Record last updated: Monday 07 August 2017
Contact: aeru@herts.ac.uk