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Demeton-O-methyl sulfoxide

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Name

Demeton-O-methyl sulfoxide

EINECS N/A
CAS No. 301-12-2 Density 1.31g/cm3
PSA 106.92000 LogP 2.75480
Solubility Miscible Melting Point <-20oC
Formula C6H15 O4 P S2 Boiling Point 377.6°Cat760mmHg
Molecular Weight 246.288 Flash Point 182.2°C
Transport Information N/A Appearance N/A
Safety Poison by ingestion, skin contact, intravenous, and intraperitoneal routes. Human mutation data reported. When heated to decomposition it emits very toxic fumes of POx and SOx. See also DEMETON; DEMETON-O + DEMETON-S; DEMETON-O-METHYL; DEMETON-S; DEMETON-S-METHYL; DEMETON-S-METHYL-SULPHONE. Risk Codes 24/25-50
Molecular Structure Molecular Structure of 301-12-2 (DEMETON-S-METHYL SULFOXIDE) Hazard Symbols
Synonyms

Ethanethiol,2-(ethylsulfinyl)-, S-ester with O,O-dimethyl phosphorothioate (8CI); BAY 21097;Demeton-S methyl sulfoxide; MSR; MSR (pesticide); MSR Spray Concentrate;Metaisosystox sulfoxide; Metasystox R; Methyl oxydemeton S; NSC 370785;O,O-Dimethyl S-[2-(ethylsulfinyl)ethyl] monothiophosphate; O,O-DimethylS-[2-(ethylsulfinyl)ethyl] phosphorothioate; O,O-DimethylS-[2-(ethylsulfinyl)ethyl] thiophosphate; Oxydemeton M; Oxydemeton-methyl; R2170; S-[2-(Ethylsulfinyl)ethyl] O,O-dimethyl phosphorothioate

Article Data 3

Demeton-O-methyl sulfoxide Chemical Properties

Empirical Formula of Demeton-O-methyl sulfoxide (CAS NO.301-12-2): C6H15O4PS2
Molecular Weight: 246.2847
EINECS: 206-110-7  
Index of Refraction: 1.519
Density: 1.31 g/cm3
Flash Point: 182.2 °C
storage temp.: 0-6 °C
Appearance: Clear amber liquid
Enthalpy of Vaporization: 60.09 kJ/mol
Boiling Point: 377.6 °C at 760 mmHg
Vapour Pressure: 1.45E-05 mmHg at 25 °C 
Structure of Demeton-O-methyl sulfoxide (CAS NO.301-12-2):
                       

Demeton-O-methyl sulfoxide Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
bird - wild LD50 oral 42mg/kg (42mg/kg)   Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971.
chicken LD50 oral 80mg/kg (80mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
Toxicology and Applied Pharmacology. Vol. 6, Pg. 147, 1964.
duck LD50 oral 54mg/kg (54mg/kg)   Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971.
guinea pig LD50 intraperitoneal 30mg/kg (30mg/kg)   Toxicology and Applied Pharmacology. Vol. 4, Pg. 621, 1962.
guinea pig LD50 oral 120mg/kg (120mg/kg)   Pesticide Chemicals Official Compendium, Association of the American Pesticide Control Officials, Inc., 1966. Vol. -, Pg. 721, 1966.
mouse LD50 intraperitoneal 8mg/kg (8mg/kg)   Toxicology and Applied Pharmacology. Vol. 4, Pg. 621, 1962.
mouse LD50 oral 10mg/kg (10mg/kg)   "Organophosphorus Pesticides: Organic and Biological Chemistry," Eto, M., Cleveland, OH, CRC Press, Inc., 1974Vol. -, Pg. 197, 1974.
pigeon LD50 oral 15mg/kg (15mg/kg)   Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971.
quail LD50 oral 84mg/kg (84mg/kg)   Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971.
rat LC50 inhalation 1500mg/m3/1H (1500mg/m3)   "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A309, Pg. 1983,
rat LD50 intraperitoneal 20mg/kg (20mg/kg)   Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 385, 1973.
rat LD50 intravenous 47mg/kg (47mg/kg) BEHAVIORAL: GENERAL ANESTHETIC Biochemical Journal. Vol. 67, Pg. 187, 1957.
rat LD50 oral 30mg/kg (30mg/kg)   Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 234, Pg. 352, 1958.
rat LD50 skin 100mg/kg (100mg/kg)   World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat LD50 unreported 65mg/kg (65mg/kg)   "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 348, 1971.

Demeton-O-methyl sulfoxide Consensus Reports

EPA Genetic Toxicology Program.

Demeton-O-methyl sulfoxide Safety Profile

Poison by ingestion, skin contact, intravenous, and intraperitoneal routes. Human mutation data reported. When heated to decomposition it emits very toxic fumes of POx and SOx. See also DEMETON; DEMETON-O + DEMETON-S; DEMETON-O-METHYL; DEMETON-S; DEMETON-S-METHYL; DEMETON-S-METHYL-SULPHONE.
 

Hazard Codes of Demeton-O-methyl sulfoxide (CAS NO.301-12-2): ToxicTDangerousN
Risk Statements: 24/25-50 
R24:Toxic in contact with skin. 
R25 :Toxic if swallowed. 
R50:Very toxic to aquatic organisms.
Safety Statements: 23-36/37-45-61 
S23:Do not breathe vapour. 
S36/37:Wear suitable protective clothing and gloves. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.

Demeton-O-methyl sulfoxide Specification

 Demeton-O-methyl sulfoxide ,its cas register number is 301-12-2. It also can be called Oxydemeton methyl ; Methyl demeton ; Methyl demeton-O-sulfoxide and Metasystox-R .

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