NCIt definition : A yellow colored, combustible leaflet material that emits toxic fumes of nitrogen
oxides when heated to decomposition. Michler's base is used as a chemical intermediate
in the manufacture of dyes and for its hydrochloric salt and is also used as an analytical
reagent in the determination of lead. Exposure to Michler's base irritates the skin
and eyes and can lead to methemoglobinemia and respiratory tract distress. Michler's
base is reasonably anticipated to be a human carcinogen. (NCI05);