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Basic Information
CAS No.: 321-54-0
Name: COUMAPHOS-OXON
Article Data: 2
Molecular Structure:
Molecular Structure of 321-54-0 (COUMAPHOS-OXON)
Formula: C14H16 Cl O6 P
Molecular Weight: 346.704
Synonyms: Coumarin,3-chloro-7-hydroxy-4-methyl-, diethyl phosphate (7CI,8CI); Umbelliferone,3-chloro-4-methyl-, diethyl phosphate (6CI); 3-Chloro-4-methylumbelliferonediethyl phosphate; Co-ral O-analog; Coralox; Coroxon; Coumaphos O-analog;Coumaphos oxon; Coumaphoxon; Diethyl 3-chloro-4-methylcoumarin-7-yl phosphate;O,O-Diethyl O-(3-chloro-4-methylcoumarin-7-yl) phosphate
Density: 1.36g/cm3
Boiling Point: 433.7°Cat760mmHg
Flash Point: 347°C
Safety: Deadly poison by ingestion. When heated to decomposition it emits very toxic fumes of POx and Cl−. See also ESTERS and PHOSPHATES.
PSA: 84.78000
LogP: 4.31470
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Chemistry

IUPAC Name: (3-chloro-4-methyl-2-oxochromen-7-yl) diethyl phosphate
Synonyms of 3-Chloro-4-methyl-7-coumarinyl diethyl phosphate (CAS NO.321-54-0): BRN 1266025 ; Coroxon ; Coumaphos O-analog ; Diethyl 3-chloro-4-methyl-7-coumarinyl phosphate ; EINECS 206-288-6 ; O,O-Di(2-chloroethyl)-7-(3-chloro-4-methylcoumarinyl)phosphate ; O,O-Diethyl O-(3-chloro-4-methylcoumarin-7-yl) phosphate ; Phosphoric acid, diethyl ester, ester with 3-chloro-7-hydroxy-4-methylcoumarin ; 3-Chloro-4-methyl-2-oxo-2H-1-benzopyran-7-yl diethyl phosphate ; Coumarin, 3-chloro-7-hydroxy-4-methyl-, diethyl phosphate ; Phosphoric acid, 3-chloro-4-methyl-2-oxo-2H-1-benzopyran-7-yl diethyl ester
CAS NO: 321-54-0
Molecular Formula of 3-Chloro-4-methyl-7-coumarinyl diethyl phosphate (CAS NO.321-54-0): C14H16ClO6P
Molecular Weight: 346.7
Molecular Structure:

H bond acceptors: 6
H bond donors: 0
Freely Rotating Bonds: 6
Polar Surface Area: 80.87 Å2
Index of Refraction: 1.542
Molar Refractivity: 79.84 cm3
Molar Volume: 253.6 cm3
Surface Tension: 48 dyne/cm
Density of 3-Chloro-4-methyl-7-coumarinyl diethyl phosphate (CAS NO.321-54-0): 1.36 g/cm3
Flash Point: 347 °C
Enthalpy of Vaporization: 68.97 kJ/mol
Boiling Point: 433.7 °C at 760 mmHg
Vapour Pressure: 1.01E-07 mmHg at 25°C

Uses

 3-Chloro-4-methyl-7-coumarinyl diethyl phosphate (CAS NO.321-54-0) is uesd as pesticide.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
chicken LD50 oral 2200ug/kg (2.2mg/kg)   Biochemical Pharmacology. Vol. 16, Pg. 1183, 1967.
rat LD50 oral 10mg/kg (10mg/kg)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1141, 1986.

Safety Profile

RIDADR: 2783
HazardClass: 6.1(a)
PackingGroup: II
Deadly poison by ingestion. When heated to decomposition it emits very toxic fumes of POx and Cl−. See also ESTERS and PHOSPHATES.