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Basic Information
CAS No.: 298-03-3
Name: DEMETON O
Molecular Structure:
Molecular Structure of 298-03-3 (DEMETON O)
Formula: C8H19 O3 P S2
Molecular Weight: 258.343
Synonyms: Phosphorothioicacid, O,O-diethyl ester O-[2-(ethylthio)ethyl] ester (6CI); Demeton-O; Demetonthione;NSC 8928; O,O-Diethyl O-[2-(ethylthio)ethyl] phosphorothionate
EINECS: 206-053-8
Density: 1.119
Boiling Point: 92-93℃
Flash Point: 133.6°C
Solubility: 60mgl-1
Hazard Symbols:
Risk Codes: 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 POx and SOx. 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.

PSA: 94.89000
LogP: 3.70420
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Chemistry

Product Name: Demeton-O (CAS NO.298-03-3)


Molecular Formula: C8H19O3PS2
Molecular Weight: 258.338421g/mol
Mol File: 298-03-3.mol
Einecs: 206-053-8
Boiling point: 297.2 °C at 760 mmHg
Storage Temperature: −20°C
Flash Point: 133.6 °C
Density: 1.144 g/cm3
Surface Tension: 41.7 dyne/cm
Enthalpy of Vaporization: 51.56 kJ/mol
Vapour Pressure: 0.00242 mmHg at 25°C
XLogP3-AA: 3
H-Bond Donor: 0
H-Bond Acceptor: 3
Structure Descriptors of Demeton-O (CAS NO.298-03-3):
  IUPAC Name: diethoxy-(2-ethylsulfanylethoxy)-sulfanylidene-λ5-phosphane
  Canonical SMILES: CCOP(=S)(OCC)OCCSCC
  InChI: InChI=1S/C8H19O3PS2/c1-4-9-12(13,10-5-2)11-7-8-14-6-3/h4-8H2,1-3H3 
  InChIKey: DGLIBALSRMUQDD-UHFFFAOYSA-N

Toxicity Data With Reference

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&

Safety Profile

Poison by ingestion, skin contact, subcutaneous, and intraperitoneal routes. Human mutation data reported. An insecticide. When heated to decomposition it emits toxic fumes of POx and SOx. 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+Very,NDangerous
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 

Analytical Methods

For occupational chemical analysis use NIOSH: Demeton, 5514.

Specification

 Demeton-O ,its CAS NO. is 298-03-3,the synonyms is Demetonthione ; Di-septon ; Diaethylthiophosphorsaeureester des aethylthioglykol ; Diethyl 2-(ethylthio)ethyl phosphorothionate ; EINECS 206-053-8 ; Ethanol, 2-(ethylthio)-, O-ester with O,O-diethyl phosphorothioate ; NSC 8928 ; O,O-Diethyl O-(2-(ethylthio)ethyl) phosphorothionate ; Thiolmecaptophos ; Phosphorothioic acid, O,O-diethyl O-(2-(ethylthio)ethyl) ester ; Phosphorothioic acid, O,O-diethyl ester O-(2-(ethylthio)ethyl) ester .