Common Name: Phosalone
CAS Number: 2310-17-0
Partition Coefficient: 3.77 - 4.38

Appearance: colorless crystals with a garlic-like odor

Chemical Name: S-6-chloro-2, 3-dihydro-2-oxobenzoxazol- 3-ylmethyl O, O-diethyl phosphorodithioate (IUPAC); S-[(6-chloro-2-oxo-3(2H)-benzoxazolyl)methyl] O, O-diethyl phosphorodithioate (CA); 3-(O, O-diethyl- dithiophosphorylmethyl)-6-chlorobenzoxazolone ; O,O-diethyl-S-(6-chloro-2-oxobenzoxazolin-3-yl-methyl)- phosphorodithioate

Molecular Weight: 367.82

Water Solubility: ca. 0.01 g/l ; 10 g/l ; 0.0010 at 20 degrees C ; 1.2, 2.6 and 3.7 mg/l at 10, 20 and 30 degrees C respectively ; 10 mg/l at room temperature

Solubility in Other Solvents: Soluble (ca. 1000 g/l) in ethyl acetate, acetone, acetonitrile, benzene, chloroform, methylene chloride, cyclohexane, dioxane, methyl ethyl ketone, toluene, xylene (all at 20 degrees C) . In methanol and ethanol, ca. 200 g/l at 20 degrees C

Melting Point: 45-48 degrees C 117-118 degrees F (47-48 degrees C)

Vapor Pressure: very low (at 20 degrees C, practically negligible); negligible at room temperature (111, 111, 113, 2) 5.03 x 10 to the minus 7 mmHg at 25 degrees C

Partition Coefficient: 3.77 - 4.38

Adsorption Coefficient: 3.41 (calculated)

REGULATORY STATUS: Phosalone is no longer for sale in the U.S. . Phosalone was a general usepesticide. Products containing phosalone had the Signal Word "Warning" on their label.

Application

Phosalone is a member of the organophosphate family of insecticides. It is used as both an insecticide and acaricide. It comes in emulsifiable concentrate, wettable powder and dust formulations. It is used on nut crops, citrus, pome fruits, stone fruits, grapes, potatoes, artichokes, roses and arborvitae. It is active against the red spider mite on apples and pears. It controls a wide range of caterpillars and beetles on crops of economic importance as well as a number of hemiptera and hymenoptera.