Demeton-O-methyl
Basic information
- CAS
867-27-6- Standard SMILES
CCSCCOP(=S)(OC)OC- InChIKey
ZVZQKNVMDKSGGF-UHFFFAOYSA-N- Molecular formula
- C6H15O3PS2
- Average molar mass
- 230.3 g/mol
- Monoisotopic mass
- 230.02002368
Names & identifiers
- Preferred name
- Demeton-O-methyl
- IUPAC
- 2-ethylsulfanylethoxy-dimethoxy-sulfanylidene-λ5-phosphane
- English name
- Metasystox
- Molecular formula
- C6H15O3PS2
- Molecular weight
- 230.29
Names & synonyms
Demeton-O-methyl867-27-6Methyl-demeton-OMethyl-O-demetonDemeton-O-metileDemeton-O-methyl [ISO]O-MethyldemetonDemeton-O-metile [Italian]O,O-Dimethyl O-ethylmercaptoethyl thiophosphateMetasystox thionoUNII-V8S3QU9IT2O-(2-(Ethylthio)ethyl) O,O-dimethyl phosphorothioate
Show more names
ENT-18862BAY-15203Metasystoxmethyl systoxDemeton methylemeton-O-methylMethyl demeton-OMETHYLMERCAPTOPHOS
EINECS 212-758-12-(Ethylthio)ethyl dimethyl phosphorothionateV8S3QU9IT2BRN 1707378O,O-Dimethyl O-2-(ethylthio)ethyl phosphorothioatebeta-Ethylmercaptoethyl dimethyl thionophosphateO,O-Dimethyl 2-ethylmercaptoethyl thiophosphate, thiono isomerO,O-Dimetil-O-(2-etiltio-etil)-monotiofosfato
Database identifiers
- CAS
867-27-6- PubChem CID
- 13346
- DTXSID
DTXSID6041840- UNII
- V8S3QU9IT2
- EC Number
- 212-758-1
- Nikkaji
- J1.229G
Properties
Computed structural properties
- XLogP
- 2.3
- Topological polar surface area
- 85.1 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 5
- Rotatable bonds
- 7
- Heavy atoms
- 12
- Formal charge
- 0
- Complexity
- 146
Experimental & physicochemical properties
SpringerMaterials PropertiesBoiling point
DensityRelative density (water = 1): 1.2
SolubilitySolubility in water, g/100ml at 20 °C: 0.03
Boiling Pointat 0.07kPa: 93 °C
Vapor DensityRelative vapor density (air = 1): 7.9
Vapor PressureVapor pressure, Pa at 20 °C: 0.025
Physical DescriptionCOLOURLESS-TO-PALE YELLOW OILY LIQUID WITH CHARACTERISTIC ODOUR.
Physicochemical properties
- Melting point
- 25 °C · <25 °C
- Boiling point
- 0.15 · bp0.15 74°
- Density
- 420 · d420 1.190
- refractive index
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Danger
H301: Toxic if swallowed [Danger Acute toxicity, oral]
P264, P270, P301+P316, P321, P330, P405, and P501 (click each P-code to see the statement)
Danger
H301: Toxic if swallowed [Danger Acute toxicity, oral]
P264, P270, P301+P316, P321, P330, P405, and P501 (click each P-code to see the statement)
Hazard information
Fire HazardsCombustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire. Risk of fire and explosion if formulations contain flammable/explosive solvents.
EC ClassificationSymbol: T; R: 25; S: (1/2)-24-36/37-45
UN ClassificationUN Hazard Class: 6.1; UN Pack Group: III
Chemical DangersDecomposes on heating. This produces toxic fumes including phosphorus oxides and sulfur oxides.
Packaging and LabellingDo not transport with food and feedstuffs.
Hazard Classes and Categories
Acute toxicity - category 3
Acute Tox. 3 *
Safety & protection
Fire FightingUse water spray, foam, powder, carbon dioxide.
First Aid Measures
Chemistry & industry
Applications
DescriptionDemeton-O-methyl is an organophosphate insecticide. Other than having a moderate aqueous solubility, very little data is available regarding its environmental fate. It is moderately toxic to honeybees and earthworms. Other ecotoxicity data is missing. Demeton-O-methyl is an acetylcholinesterase inhibitor and a neurotoxin. It is also an irritant.
UsesDemeton Methyl is an organophosphorus pesticides.
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Compound notes
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