Product Name: Demeton-S-methyl (CAS NO.919-86-8)

Molecular Formula: C₆H₁₅O₃PS₂
Molecular Weight: g/mol
Mol File: 919-86-8.mol
Einecs: 213-052-6
Boiling point: 287.4 °C at 760 mmHg
Storage Temperature: -18°C
Flash Point: 127.6 °C
Density: 1.197 g/cm³
Water Solubility: 0.33 g/100 ml (20 °C)
Surface Tension: 39.9 dyne/cm
Enthalpy of Vaporization: 50.55 kJ/mol
Vapour Pressure: 0.00429 mmHg at 25°C
XLogP3-AA: 1
H-Bond Donor: 0
H-Bond Acceptor: 3
Structure Descriptors of Demeton-S-methyl (CAS NO.919-86-8):
  IUPAC Name: 1-dimethoxyphosphorylsulfanyl-2-ethylsulfanylethane
  Canonical SMILES: CCSCCSP(=O)(OC)OC
  InChI: InChI=1S/C6H15O3PS2/c1-4-11-5-6-12-10(7,8-2)9-3/h4-6H2,1-3H3 
  InChIKey: WEBQKRLKWNIYKK-UHFFFAOYSA-N

 Demeton-S-methyl (CAS NO.919-86-8) is used as an acaricide and insecticide; more specifically it is an organothiophosphate acaricide and an aliphatic organothiophosphate insecticide, respectively.

Reported in EPA TSCA Inventory. EPA Extremely Hazardous Substances List.

Poison by ingestion, inhalation, skin contact, intraperitoneal, and intravenous routes. Mutation data reported. An insecticide. When heated to decomposition it emits very toxic fumes of PO_x and SO_x. See also DEMETON-O + DEMETON-S and DEMETON; DEMETON-O-METHYL; DEMETON-O-METHYL SULFOXIDE; DEMETON-S; DEMETON-S-METHYL-SULPHONE.
Safety Information of Demeton-S-methyl (CAS NO.919-86-8):
Hazard Codes: T,N,Xn,F
Risk Statements:  24/25-51/53-36-20/21/22-11 
11:  Highly Flammable
20:  Harmful by inhalation 
21:  Harmful in contact with skin 
22:  Harmful if swallowed 
24:  Toxic in contact with skin 
25:  Toxic if swallowed 
36:  Irritating to the eyes 
51:  Toxic to aquatic organisms  
53:  May cause long-term adverse effects in the aquatic environment 
Safety Statements: 28-36/37-45-61-26
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
28:  After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) 
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 
61:  Avoid release to the environment. Refer to special instructions safety data sheet 

ACGIH TLV: TWA 0.05 ppm (skin)(sensitizer); Not Classifiable as a Human Carcinogen

 Demeton-S-methyl ,its CAS NO. is 919-86-8,the synonyms is 2-Ethylthioethyl dimethyl phosphorothioate ; Demeton-S-metile ; Demetox ; Dimethyl S-(2-eththioethyl)thiophosphate ; EINECS 213-052-6 ; Ethanethiol, 2-(ethylthio)-, S-ester with O,O-dimethyl  Metaisosystox ; Methyl demeton thioester ; Methyl isosystox ; Methyl thionodemeton ; Methyl-mercaptofos teolovy (USSR) ; Methylmercaptofostiol (USSR) ; Mifatox ; O,O-Dimethyl 2-ethylmercaptoethyl thiophosphate, thiolo isomer ; O,O-Dimethyl S-(2-(ethylthio)ethyl)phosphorothioate ; O,O-Dimethyl-S-(2-aethylthio-aethyl)-monothiophosphat ; Phosphorothioic acid, O,O-dimethyl S-(2-(ethylthio)ethyl) ester ; S-(2-(Ethylthio)ethyl) O,O-dimethyl phosphorothioate ; S-(2-(Ethylthio)ethyl) O,O-dimethyl thiophosphate ; Thiometon oxon ; Thiophosphate de O,O-dimethyle et de S-2-ethylthio-ethyle .