Abstract
The use of fluorescent whitening dyes with food paper container or packing material and sanitary napkin for medical supplies is forbidden by the Food Sanitation Law in Japan.
The ground of this law is introduced ; the toxic experimental results and its opinions were introduced.
A measurement of fluorescent strength by colrimeter and the relationship between additional amounts and florescent strength, stripping method of fluorescent whitening paper were studied.
The retention of fluorescent dyes in paper is 31%.
