The Insecticide made from Tin

Abstract

1) The insecticide made from stannous chloride and arsenic acid contains 42.56% As₂O₅, 52.02% SnO and 5.42% H₂O. The chemical formula of this insecticide would be SnHAsO₄; and this insecticide has 0.54% water-soluble arsenic (as As₂O₅).
2) The effect of this insecticide against the silkworm (J.115×C.112) is as powerful as lead arsenate. But that of calcium arsenate is weaker.
3) Both of this insecticide made from tinand lead arsenate give no harm to the leaves of the persimmon (Fuy_??_), the pear (Taihaku and Chojuro) and the Miike-takana, a kind of vegetables.