7793. Propachlor

Nomenclature

CAS number: 1918-16-7
2-Chloro-N-(1-methylethyl)-N-phenylacetamide; 2-chloro-N-isopropylacetanilide; N-isopropyl-α-chloroacetanilide; CP-31393; Ramrod (Monsanto).
C11H14ClNO; mol wt 211.69.
C 62.41%, H 6.67%, Cl 16.75%, N 6.62%, O 7.56%.

Description and references

Selective pre-emergence herbicide. Prepn: P. C. Hamm, A. J. Speziale, US 2863752 (1958 to Monsanto). Activity studies: Duke, Diss. Abstr. B 28, 1315 (1967); Jaworski, J. Agric. Food Chem. 17, 165 (1969); Lamoureaux et al., ibid. 19, 346 (1971); Dhillon, Anderson, Weed Res. 12, 182 (1972). Metabolism: J. E. Bakke et al., Science 210, 433 (1980). Toxicity data: E. E. Kenaga, Down Earth 35, 25 (1979).

Chemical structure

Properties

Light tan solid, mp 67-76°. Vapor pressure at 110°: 0.03 mm Hg. Soly in water at 20°: 700 mg/l. Sol in common organic solvents except aliphatic hydrocarbons. LD50 orally in rats: 710 mg/kg (Kenaga).

Use

Herbicide.