Product Name

  • Name

    O-(2,5-DICHLORO-4-BROMOPHENYL)O-ETHYLPHENYLPHOSPHONOTHIONATE

  • EINECS
  • CAS No. 18936-66-8
  • Density 1.61g/cm3
  • Solubility
  • Melting Point
  • Formula C14H12 Br Cl2 O2 P S
  • Boiling Point 456.2°Cat760mmHg
  • Molecular Weight 426.098
  • Flash Point 229.7°C
  • Transport Information
  • Appearance
  • Safety Poison by ingestion and subcutaneous routes. When heated to decomposition it emits very toxic fumes of SOx, POx, Cl−, and Br−. See also ESTERS.
  • Risk Codes
  • Molecular Structure Molecular Structure of 18936-66-8 (O-(2,5-DICHLORO-4-BROMOPHENYL)O-ETHYLPHENYLPHOSPHONOTHIONATE)
  • Hazard Symbols
  • Synonyms Phenol,4-bromo-2,5-dichloro-, O-ester with O-ethyl phenylphosphonothioate (8CI); EthylPhosvel; O-(4-Bromo-2,5-dichlorophenyl) O-ethyl phenylphosphonothioate; VCS303; Velsicol FCS-303
  • PSA 60.36000
  • LogP 6.45680

Velsicol fcs-303 Chemical Properties

Empirical Formula of Velsicol fcs-303 (CAS NO.18936-66-8): C14H12BrCl2O2PS
Molecular Weight: 426.0926 
Index of Refraction: 1.64
Density: 1.61 g/cm3
Flash Point: 229.7 °C
Enthalpy of Vaporization: 68.86 kJ/mol
Boiling Point: 456.2 °C at 760 mmHg
Vapour Pressure: 4.48E-08 mmHg at 25 °C
Structure of Velsicol fcs-303 (CAS NO.18936-66-8):
                       
IUPAC Name: (4-Bromo-2,5-dichlorophenoxy)-ethoxy-phenyl-sulfanylidene-λ5-phosphane
Canonical SMILES: CCOP(=S)(C1=CC=CC=C1)OC2=CC(=C(C=C2Cl)Br)Cl
InChI: InChI=1S/C14H12BrCl2O2PS/c1-2-18-20(21,10-6-4-3-5-7-10)19-14-9-12(16)11(15)8-13(14)17/h3-9H,2H2,1H3
InChIKey: ZEWUWNVXERZVIT-UHFFFAOYSA-N

Velsicol fcs-303 Toxicity Data With Reference

1.    

orl-mus LD50:75 mg/kg

     JAFCAU    Journal of Agricultural and Food Chemistry. 27 (1979),1197.
2.    

orl-gpg LDLo:100 mg/kg

     JEENAI    Journal of Economic Entomology. 61 (1968),1261.
3.    

scu-gpg LDLo:100 mg/kg

     JEENAI    Journal of Economic Entomology. 61 (1968),1261.

Velsicol fcs-303 Safety Profile

Poison by ingestion and subcutaneous routes. When heated to decomposition Velsicol fcs-303 (CAS NO.18936-66-8) emits very toxic fumes of SOx, POx, Cl−, and Br−. See also ESTERS.

Velsicol fcs-303 Specification

 Velsicol fcs-303 , its cas register number is 18936-66-8. It also can be called O-(4-Bromo-2,5-dichlorophenyl) O-ethyl phenylphosphonothioate ; and Phosphonothioic acid, phenyl-, O-(4-bromo-2,5-dichlorophenyl) O-ethyl ester .

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