Methylmercaptophos oxide

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Names

[ CAS No. ]:
301-12-2

[ Name ]:
Methylmercaptophos oxide

[Synonym ]:
Oxydemetonmethyl
EINECS 206-110-7
Metaisosystox sulfoxide
Metasystemox R
thiophosphoric acid S-(2-ethanesulfinyl-ethyl) ester O,O'-dimethyl ester
Methylmercaptophos oxide
Demeton-O-methyl sulfoxide
Methyl demeton-O-sulfoxide
O,O-dimethyl S-<2-(ethylsulfinyl)ethyl>phosphorothioate
S-[2-(Ethylsulfinyl)ethyl] O,O-dimethyl phosphorothioate
S-2-Ethylsulfinylethyl O,O-dimethyl phosphorothioate
Metasystox-R
OS2&2SPO&O1&O1
Aimco systox
Phosphorothioic acid, S-[2-(ethylsulfinyl)ethyl] O,O-dimethyl ester
Methyl oxydemeton S
Metasystemox
S-[2-(ethanesulfinyl)ethyl] O,O-dimethyl phosphorothioate
PO-methylsystox-sulfoxide
S-[2-(Ethylsulfinyl)ethyl]-O,O-dimethylthiophosphat
1-dimethoxyphosphorylsulfanyl-2-ethylsulfinylethane

Chemical & Physical Properties

[ Density]:
1.3±0.1 g/cm3

[ Boiling Point ]:
377.6±44.0 °C at 760 mmHg

[ Melting Point ]:
<-20ºC

[ Molecular Formula ]:
C₆H₁₅O₄PS₂

[ Molecular Weight ]:
246.285

[ Flash Point ]:
182.2±28.4 °C

[ Exact Mass ]:
246.014938

[ PSA ]:
106.92000

[ LogP ]:
-0.74

[ Vapour Pressure ]:
0.0±0.8 mmHg at 25°C

[ Index of Refraction ]:
1.519

[ Storage condition ]:
0-6°C

MSDS

Click to get detail MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TG1420000

CHEMICAL NAME :: Phosphorothioic acid, S-(2-(ethylsulfinyl)ethyl) O,O-dimethyl ester

CAS REGISTRY NUMBER :: 301-12-2

BEILSTEIN REFERENCE NO. :: 1711268

LAST UPDATED :: 199612

DATA ITEMS CITED :: 30

MOLECULAR FORMULA :: C6-H15-O4-P-S2

MOLECULAR WEIGHT :: 246.30

WISWESSER LINE NOTATION :: OS2&2SPO&O1&O1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 30 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1500 mg/m3/1H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 100 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 20 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 47 mg/kg

TOXIC EFFECTS :: Behavioral - general anesthetic Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - other esterases

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Unreported

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 65 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 10 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 8 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 120 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 30 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - pigeon

DOSE/DURATION :: 15 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - chicken

DOSE/DURATION :: 80 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - convulsions or effect on seizure threshold

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - quail

DOSE/DURATION :: 84 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - duck

DOSE/DURATION :: 54 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - wild bird species

DOSE/DURATION :: 42 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - chicken

DOSE/DURATION :: 490 mg/kg/1W-C

TOXIC EFFECTS :: Nutritional and Gross Metabolic - weight loss or decreased weight gain

TYPE OF TEST :: Sex chromosome loss and nondisjunction

TYPE OF TEST :: Micronucleus test

TYPE OF TEST :: Cytogenetic analysis

TYPE OF TEST :: Micronucleus test

MUTATION DATA

TYPE OF TEST :: Sister chromatid exchange

TEST SYSTEM :: Rodent - hamster Lung

DOSE/DURATION :: 40 mg/L

REFERENCE :: ENMUDM Environmental Mutagenesis. (New York, NY) V.1-9, 1979-87. For publisher information, see EMMUEG. Volume(issue)/page/year: 4,621,1982 *** REVIEWS *** TOXICOLOGY REVIEW RREVAH Residue Reviews. (Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ 07094) V.1- 1962- Volume(issue)/page/year: 63,1,1976 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 83049 No. of Facilities: 110 (estimated) No. of Industries: 2 No. of Occupations: 2 No. of Employees: 254 (estimated)

Safety Information

[ Symbol ]:

GHS06, GHS09

[ Signal Word ]:
Danger

[ Hazard Statements ]:
H301 + H311-H400

[ Precautionary Statements ]:
P273-P280-P301 + P310-P312

[ Hazard Codes ]:
T: Toxic;N: Dangerous for the environment;

[ Risk Phrases ]:
24/25-50

[ Safety Phrases ]:
S23-S36/37-S45-S61

[ RIDADR ]:
UN 2810 6.1/PG 2

[ RTECS ]:
TG1420000

[ Packaging Group ]:
II

[ HS Code ]:
2930909061

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2930909061

[ Summary ]:
2930909061 o,o,o',o'-tetramethyl o,o'-(thiobis(4,1-phenylene)) diphosphorothioate。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:30.0%

Articles

Investigation on diazinon and oxydemeton-methyl residues in cucumbers grown in Kerman greenhouses.

Environ. Monit. Assess. 186(7) , 3995-9, (2014)

Pesticides are considered as the most polluting substances. The residue of pesticides in agricultural crops, especially in greenhouse harvests, has been reported critical. Cucumber, considered as a ve...

Determination of polar organophosphorus pesticides in water samples by hydrophilic interaction liquid chromatography with tandem mass spectrometry.

Rapid Commun. Mass Spectrom. 22(14) , 2203-10, (2008)

A method combining hydrophilic interaction liquid chromatography (HILIC) with tandem mass spectrometry (MS/MS) was developed for the determination of polar organophosphorus pesticides (OPPs; acephate,...

Committee on Pesticides and Disinfectant Formulations. Pesticide formulations: CIPAC studies. Collaborative International Pesticide Analytical Council.

J. AOAC Int. 85(1) , 249-51, (2002)

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