Index Number:C.L. Direct Yellow12(24895)

Physical and Chemical Characteristics:
  Even Powder with dark yellow color. Solvant degree in water is 30g/l(80℃). Slight dissolved in alcohol and cellulose. Slight dissolved in acetone with greenish yellow light. It appears red light meeting with sulphuric acid. After being diluted it appears purple and then red light blue sediment. Dissolved in water with yellow to golden liguor. There is flocky dyestuff when the concentration comes down. Water liquor of dyestuff turns into purple sediment meeting with dense sulphuric acid, into golden-orange sediment with dense soda liquor and it has a slight change in color with 10% soda liquor,2% water liquor turns into jelly under 15℃. So it is named Direct Yellow. The dyestuff can almost be completed absorbed when dyeing to cellulose. The affinity is best at 40℃.And the discharging gender is good.

Main Usage:
  The viscose is reddish yellow light.It is chromophile and has an excellent levelling gender. To exhaust the dyestuff you should lower the temperature of the dye liquor automatically to 40℃. It is often used with Direct Green B and Direct Red 4BC etc. Being used on kitted fabric, flannelette and wool blanket. Seldom is it used on cotton cloth. It also can be used on direct printing, fluched colors of discharging printing and dying ink, wool, verona Serge and Damask etc.