﻿UNITED STATES DEPARTMENT OF AGRICULTURE 



DEPARTMENT BULLETIN No. 1147 



Washington, D. C. 



June 9, 1923 



CHEMICAL, PHYSICAL, AND INSECTICIDAL PROPERTIES 

 OF ARSENICALS 



F. C. COOK, Physiological Chemist, Insecticide and Fungicide Laboratory 



Miscellaneous Division, Bureau of Chemistry 



and 



N. E. McINDOO, Insect Physiologist, Fruit Insect Investigations 



Bureau of Entomology 



CONTENTS 



Purpose of investigation 1 



Arsenicals studied 1 



Chemical properties of arsenical* 2 



Physical properties of arsenicals 20 



Comparative toxicity of arsenicals 24 



General properties of arsenicals SO 



Summary S3 



Literature citod 55 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1923 



