Product name: reduction dyes (blue)Specification: 95%Content: 95%Water: less than 1PPM less than 500 Physical/chemical character: blue kernel in appearance. When being heated until 170c, it begins to sublime into purple gas and will not be broken down. It can scatter into water quickly. In thick sulphuric acid, it will have shinny yellow green color. After dilution, it will have blue precipitate producing area:China