Direct Fast Yellow RL
C.I.Direct Yellow 83
Molecular Structure: Double azo class
Molecular Weight: 1083.92
CAS Registry Number:82944-42-1
Manufacturing Methods : 3-Aminonaphthalene-1,5-disulfonic acid diazo, and 2-Amino-4-methylanisole coupling, its product (2 Moore) and 2,4,6-Trichloro-1,3,5-triazine condensation, and hydrolysis residual chlorine.
Properties and Applications: yellow. Brown powder. Soluble in water, slightly soluble in alcohol. The strong sulfuric acid for purple; In sodium hydroxide solution for orange in. Mainly used for cotton, hemp, such as glue of cellulose fiber dyeing and printing, and can be used as a type D dye used to polyester/cotton or polyester/stick blended fabric dyeing of a bath.