| thiometon (Ref: SAN 230) |
 |
Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home
GENERAL INFORMATION 
for thiometon
Description: An organophosphate insecticide and acaricide effective against sucking insects on fruit and other crops
Example pests controlled: Aphids; Thrips; Spider mites; Psyllds; sawflies; Jassids; Cotton locust
Example applications: Fruit including strawberries, citrus, olives; Beet crops; Tobacco; Cereals; Cotton
Efficacy & activity: -
Availability status: Current
Introduction & key dates: -
EC Regulation 1107/2009 (repealing 91/414):
| Status | Not approved |
| Dossier rapporteur/co-rapporteur | Not applicable |
| 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: 
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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Also used in: Australia
Chemical structure:
| Isomerism | - |
| Chemical formula | C6H15O2PS3 |
| Canonical SMILES | CCSCCSP(=S)(OC)OC |
| Isomeric SMILES | No data |
| International Chemical Identifier key (InChIKey) | OPASCBHCTNRLRM-UHFFFAOYSA-N |
| International Chemical Identifier (InChI) | InChI=1S/C6H15O2PS3/c1-4-11-5-6-12-9(10,7-2)8-3/h4-6H2,1-3H3 |
| 2D structure diagram/image available? | Yes |
General status:
| Pesticide type | Insecticide, Acaricide | |||
| Substance group | Organophosphate | |||
| Minimum active substance purity | - | |||
| Known relevant impurities | - | |||
| Substance origin | Synthetic | |||
| Mode of action | Systemic with contact and stomach action, anticholinesterase inhibition | |||
| CAS RN | 640-15-3 | |||
| EC number | 211-362-6 | |||
| CIPAC number | 115 | |||
| US EPA chemical code | 456300 | |||
| PubChem CID | 12541 | |||
| Molecular mass (g mol-1) | 246.35 | |||
| PIN (Preferred Identification Name) | S-[2-(ethylsulfanyl)ethyl] O,O-dimethyl phosphorodithioate | |||
| IUPAC name | S-2-ethylthioethyl O,O-dimethyl phosphorodithioate | |||
| CAS name | S-[2-(ethylthio)ethyl] O,O-dimethyl phosphorodithioate | |||
| Other status information | - | |||
| 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 | Aphis fabae Coleomegilla maculata Hyalopterus pruni Myzus persicae Panonychus ulmi many others |
|||
| Physical state | Colourless oily 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 as a pesticide under EC Regulation 1107/2009 | |||
| Formulation and application details | Usually formulated as an emulsifiable concentrate or ULV. | |||
ENVIRONMENTAL FATE
for thiometon
| Property |
Value | Source/Quality Score/Other Information |
Interpretation |
|
| Solubility - In water at 20oC (mg l-1) | 200 | F4 - @ 25 DegC | Moderate | |
| Solubility - In organic solvents at 20oC (mg l-1) | - | - | - | |
| Melting point (oC) | Not applicable | L3 | - | |
| Boiling point (oC) | 100 | F4 | - | |
| Degradation point (oC) | - | - | - | |
| Flashpoint (oC) | - | - | - | |
| Octanol-water partition coefficient at pH 7, 20oC | P | 1.41 X 1003 | Calculated | - |
| Log P | 3.15 | L3 | High | |
| Bulk density (g ml-1)/Specific gravity | 1.21 | L3 | - | |
| Dissociation constant (pKa) at 25oC | - | - | - | |
| Note: | ||||
| Vapour pressure at 20oC (mPa) | 39.9 | L3 | Highly volatile | |
| Henry's law constant at 25oC (Pa m3 mol-1) | 2.84 X 10-02 | L3 | Non-volatile | |
GUS leaching potential index  |
0.37 | Calculated | Low leachability | |
| SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate |
Value | 8.02 X 10-04 | 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) | 2 | K4 | Non-persistent |
| DT50 (lab at 20oC) | - | - | - | |
| DT50 (field) | - | - | - | |
| DT90 (lab at 20oC) | - | - | - | |
| DT90 (field) | - | - | - | |
| DT50 modelling endpoint | - | - | - | |
| Note | General literature DT50 range 1.9-7.0 days (R2) | |||
| Dissipation rate RL50 on plant matrix | Value | - | - | - |
| Note | - | |||
| Dissipation rate RL50 on and in plant matrix | Value | - | - | - |
| Note | - | |||
| Aqueous photolysis DT50 (days) at pH 7 | Value | - | - | - |
| Note | - | |||
| Aqueous hydrolysis DT50 (days) at 20oC and pH 7 | Value | 22 | K4 | Non-persistent |
| Note | Other data: pH sensitive - DT50 25 days at pH 3, 27 days at pH 6, 17 days at pH 9, all at 25 degC (F4) | |||
| Water-sediment DT50 (days) | - | - | - | |
| Water phase only DT50 (days) | - | - | - | |
Soil adsorption and mobility:
| Property |
Value | Source/Quality Score/Other Information |
Interpretation |
|
| Linear | Kd | - | L3 | Slightly mobile |
| Koc | 579 | |||
| 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 |
|
| thiometon sulfoxide | Soil | - | - | |
| thiometon sulfone | Soil | - | - | |
Other known metabolites:
| Metabolite name and reference | Aliases | Formation medium / Rate | Estimated maximum occurrence fraction | Metabolising enzymes |
| demeton-S-methyl sulfone (Ref: ) Note: - |
- | Animal | - | - |
| demeton-S-methyl (Ref: ) Note: - |
- | Animal | - | - |
| oxydemeton-methyl (Ref: ENT 24964) Note: - |
- | Animal | - | - |
| Property |
Value | Source/Quality Score/Other Information |
Interpretation |
|
| Bio-concentration factor | BCF (l kg-1) | 174 | Q2 Estimated | Threshold for concern |
| CT50 (days) | Not available | - | ||
| Mammals - Acute oral LD50 (mg kg-1) | 65 | F4 Rat | High | |
| Mammals - Short term dietary NOEL | (mg kg-1) | - | - | - |
| (ppm diet) | - | - | ||
| Birds - Acute LD50 (mg kg-1) | 61.75 | R4 median across 2 species | High | |
| Birds - Short term dietary (LC50/LD50) | - | - | - | |
| Fish - Acute 96 hour LC50 (mg l-1) | > 3.7 | F4 Oncorhynchus mykiss | Moderate | |
| Fish - Chronic 21 day NOEC (mg l-1) | - | - | - | |
| Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) | > 8.2 | K2 Unknown species | Moderate | |
| 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) | > 12.8 | K3 Unknown species | Low | |
| Algae - Chronic 96 hour NOEC, growth (mg l-1) | - | - | - | |
| Honeybees | Contact acute 48 hour LD50 (μg bee-1) | > 0.55 | K4 | 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) | - | - | - | |
| 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 | Harmful | AB1 Typhlodromus pyri | - | |
| 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 thiometon
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) | 65 | F4 Rat | High | |
| Mammals - Dermal LD50 (mg kg-1 body weight) | 1429 | L3 Rat | - | |
| Mammals - Inhalation LC50 (mg l-1) | 1.93 | L3 Rat, 4 hr | - | |
| Other Mammal toxicity endpoints | - | - | ||
| ADI - Acceptable Daily Intake (mg kg-1bw day-1) | 0.003 | A5 | - | |
| ARfD - Acute Reference Dose (mg kg-1bw day-1) | - | - | - | |
| 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 | - | |||
| 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 | |||
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| Respiratory tract irritant | Skin irritant | Skin sensitiser | Eye irritant | Phototoxicant | ||||
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| General human health issues | May cause dermatitis | |||||||
: 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 |
Prevent generation of mists | |||
| CLP classification 2013 | Health: H301, H312 | |||
| EC Risk Classification |
T - Toxic: R25 Xn - Harmful: R21 |
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| EC Safety Classification |
S1/2, S36/37, S45 | |||
| WHO Classification | Ib | - | Highly hazardous | |
| US EPA Classification (formulation) | II | - | Warning - Moderately toxic | |
| UN Number | 3018 | |||
| Waste disposal & packaging |
- | |||
| Language | Name |
| English | thiometon |
| French | thiometon |
| German | Thiometon |
| Danish | thiometon |
| Italian | thiometon |
| Spanish | tiometon |
| Greek | thiometon |
| Slovenian | tiometon |
| Polish | tiometon |
| Swedish | - |
| Hungarian | - |
| Dutch | thiometon |
Record last updated: Friday 25 May 2018
Contact: aeru@herts.ac.uk