Table 5.

Fumigant toxicity of components of CHE against S. zeamais adults

Pure compounds	LD50a	Slope ± SE	95% FLa	χ2 (df)	P-value
2,6-Diisopropylaniline	32.26	4.58 ± 0.31	29.39–36.50	7.75 (18)	0.97
Laurine	43.83	2.92 ± 0.59	37.84–53.16	7.84 (18)	0.981
Chlorobutanol	21.91	3.76 ± 0.76	18.92–26.58	7.84 (18)	0.981
6-Methyl-5-hepten-2-one	57.57	8.55 ± 1.74	54.76–61.52	8.23 (18)	0.975
Phosphine	1.7 × 10–2	2.00 ± 0.41	1.3 × 10–2–2.2 × 10–2	7.88 (18)	0.980

The number of treated insects per compound was 240. LD₅₀ values of the pure compounds were calculated using Probit analysis.

^aConcentration (mg/liter air); mean mortality of the control with acetone <1.5%.