red light navy. The dark grey powder. In 90 ℃ the solubility of when of 20 g/L, sensitive to that fights. Red light for navy. Dye in bath of copper, iron ion micro have change (4 ~ 5 grades). SDC classification for a class B, move the dye the gender is poorer. Cotton and glue white are 3 grade neutral, cotton white alkaline into four grades, viscose alkaline white for 3 grade.
