6885. Oryzalin

Nomenclature

CAS number: 19044-88-3
4-(Dipropylamino)-3,5-dinitrobenzenesulfonamide; 3,5-dinitro-N4,N4-dipropylsulfanilamide; EL-119; Surflan (Dow AgroSci.).
C12H18N4O6S; mol wt 346.36.
C 41.61%, H 5.24%, N 16.18%, O 27.72%, S 9.26%.

Description and references

Selective pre-emergence herbicide. Prepn: Q. F. Soper, US 3367949 (1968 to Lilly). Soil degradation: T. Golab et al., Pestic. Biochem. Physiol. 5, 196 (1975); E. W. Stoller, L. M. Wax, J. Environ. Qual. 6, 124 (1977). Review: O. D. Decker, W. S. Johnson, Anal. Methods Pestic. Plant Growth Regul. 8, 433 (1976).

Chemical structure

Properties

Yellow-orange crystals, mp 137-138° (tech, 141-142°). Soly in water at 25°: 2.5 ppm. Sol in acetone, ethanol, methanol, acetonitrile; slightly sol in benzene. Practically insol in hexane. Vapor pressure at 30°: <1 × 10-7 mm Hg. LD50 orally in rats: >10 g/kg (Decker, Johnson).

Use

Herbicide.