Explanatory notes
… yellow powder, specific gravity about 2.7; odourless and insoluble in water. Similar uses to the disulphide, and also … not occur in nature, is a light yellow amorphous solid, insoluble in water. Used as a pigment. With alkali … thioarsenates of heading 28.42 . The heading excludes natural arsenic sulphides (disulphide or realgar, …