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Basic Information
CAS No.: 17109-49-8
Name: Edifenphos
Article Data: 19
Molecular Structure:
Molecular Structure of 17109-49-8 (Edifenphos)
Formula: C14H15O2PS2
Molecular Weight: 310.378
Synonyms: BAY 78418;Bayer 78418;EDDP (pesticide);Edifenphpos;Ediphenphos;Ethyl S,S-diphenyl phosphorodithioate;Hinosan;O-Ethyl S,S-diphenyldithiophosphate;O-Ethyl S,S-diphenyl phosphorodithioate;S,S-Diphenyl O-ethylphosphorodithioate;
EINECS: 241-178-1
Density: 1.27 g/cm3
Melting Point: 25°C
Boiling Point: 430.2 °C at 760 mmHg
Flash Point: 214 °C
Solubility: 56 mg l-1 (20 °C)
Appearance: Yellow to brown liquid with a characteristic odor.
Hazard Symbols: ToxicT, DangerousN
Risk Codes: 21-23/25-43-50/53
Safety: 36/37-45-60-61
Transport Information: UN 2810
PSA: 86.71000
LogP: 5.71560
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  • 17109-49-8 	Edifenphos

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    17109-49-8 Edifenphos

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    Phosphorodithioic acid,O-ethyl S,S-diphenyl ester

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Chemistry

 The molecular formula of O-ETHYL-S,S-DIPHENYL DITHIOPHOSPHATE(17109-49-8) is C14H15O2PS and its formula weight is 310.37g/mol.Its EINECS is 241-178-1.The chemical properties of industrial products is yellow to light brown transparent liquid, with a bad smell. Its liansport Information  is UN 2810.The density of O-ETHYL-S,S-DIPHENYL DITHIOPHOSPHATE(17109-49-8) is 1.27 g/cm3 and it has a melting point of  0-6°C .The boiling point is 430.2°C at 760 mmHg .The refractive index is about 1.618 and molar refractivity is 85.23cm3.Surface tension is 52.2 dyne/cm and enthalpy of vaporization is 65.91 kJ/mol.Molar volume is 243.2 cm3 and polarizability is 33.78 10-24cm3.Its flash point is 214 °C  and the vapor pressenge is 3.32E-07 mmHg at 25°C .O-ETHYL-S,S-DIPHENYL DITHIOPHOSPHATE(17109-49-8) has the property of being dissolved in methanol, ether, chloroform, acetone, benzene, xylene and other organic solvents.It is not soluble in  water.
  The chemical synonyms of O-ETHYL-S,S-DIPHENYL DITHIOPHOSPHATE(17109-49-8) are  BAY 78418;bay78418;BAYER 78418;bayer78418;Blastoff;Dithiophosphorsaeure-O-aethyl-S,S-diphenylester;and Ediphenophos.Its product categories is  Chemotherapy agents; pesticides  and fungicides. The molecular structure of O-ETHYL-S,S-DIPHENYL DITHIOPHOSPHATE(17109-49-8) is .

Uses

It  can be used as prevention and control rice blast.

Production

The product is derived by the reaction of thiophenol and sodium dichloro derived phosphate ester .   

Toxicity Data With Reference

1.   

cyt-rat-ipr 3 mg/kg

   MUREAV    Mutation Research. 321 (1994),103.
2.   

cyt-mus-ipr 30 mg/kg

   CYTOAN    Cytologia. 49 (1984),833.
3.   

orl-rat LD50:100 mg/kg

   OYYAA2    Oyo Yakuri. Pharmacometrics. 2 (1968),76.
4.   

ihl-rat LC50:650 mg/m3/4H

   JPIFAN    Japan Pesticide Information.(17),(1973),25.
5.   

ipr-rat LD50:26 mg/kg

   TXAPA9    Toxicology and Applied Pharmacology. 23 (1972),519.
6.   

orl-mus LD50:143 mg/kg

   TOIZAG    Toho Igakkai Zasshi. Journal of Medical Society of Toho University. 25 (1978),635.
7.   

orl-rbt LD50:350 mg/kg

   28ZEAL    Pesticide Index. 5 (1976),91.
8.   

orl-gpg LD50:350 mg/kg

   28ZEAL    Pesticide Index. 5 (1976),91.

Safety Profile

Poison by ingestion and intraperitoneal routes. Mutation data reported. A cholinesterase inhibitor. When heated to decomposition it emits very toxic fumes of SOx and POx. See also PARATHION.  Hazard symbols is T;N and risk codes is R21;R23/25;R43;R50/53.Safety description is S36/37;S45;S60;S61 and hazard class is 6.1(b).

Specification

Its extinguishing agent is sand, dry powder and foam.