Phosphorothioic acid,O,O-diethyl O-[2-(ethylthio)ethyl] ester cas no:298-03-3

NamePhosphorothioic acid,O,O-diethyl O-[2-(ethylthio)ethyl] ester
CAS298-03-3
SynonymsPhosphorothioicacid, O,O-diethyl ester O-[2-(ethylthio)ethyl] ester (6CI); Demeton-O; Demetonthione;NSC 8928; O,O-Diethyl O-[2-(ethylthio)ethyl] phosphorothionate
EINECS(EC#)206-053-8
Molecular FormulaC8H19 O3 P S2
Molecular Weight258.36

refractive index1.5
storage temp−20°C

Hazardclass6.1(a)

Hazard T+: Very toxic;N: Dangerous for the environment;
Risk 27/28-50
Safety

Poison by ingestion, skin contact, subcutaneous, and intraperitoneal routes. Human mutation data reported. An insecticide. When heated to decomposition it emits toxic fumes of PO_x and SO_x. See also DEMETON-O + DEMETON-S and DEMETON-O-METHYL; DEMETON-O-METHYL SULFOXIDE; DEMETON-S; DEMETON-S-METHYL; DEMETON-S-METHYL-SULPHONE.
Analytical Methods: 
For occupational chemical analysis use NIOSH: Demeton, 5514.
Safety Information of Demeton-O (CAS NO.298-03-3):
Hazard Codes: T+,N
Risk Statements: 27/28-50 
27:  Very Toxic in contact with skin 
28:  Very Toxic if swallowed 
50:  Very Toxic to aquatic organisms 
Safety Statements: 28-36/37-45-61
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 

1.		mmo-esc 200 µg/plate		NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) PB80-133226 .
2.		mma-esc 200 µg/plate		NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) PB80-133226 .
3.		dnr-bcs 5 µg/disc		NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) PB80-133226 .
4.		mma-smc 1000 ppm		NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) PB80-133226 .
5.		dns-hmn:fbr 100 mg/L		NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) PB80-133226 .
6.		cyt-ham-ipr 2 mg/kg		ARTODN    Archives of Toxicology. 58 (1985),152.
7.		orl-rat LD50:7500 µg/kg		GUCHAZ    Guide to the Chemicals Used in Crop Protection 6 (1973),161.
8.		scu-mus LD50:15 mg/kg		AEPPAE    Naunyn-Schmiedebergs Archiv fuer Experimentelle Pathologie und Pharmakologie. 217 (1953),144.
9.		skn-rbt LDLo:100&