Basic Yellow 7GLL (C.I.Yellow 21) 200%

Product Name:BASIC YELLOW 21
C.I. No.: --
CAS No.: 12270-31-4
Molecular Formula: C22H25ClN2
Molecular Weight: 352.90
Relative Name: Cationic Yellow 7GLL

Basic yellow 19 Physical Properties and light fastness .
Basic yellow 21 Properties and Applications: colourful green light yellow. Bright yellow powder. Soluble in water. In the strong sulfuric acid of bright orange, diluted into green light yellow. In 120 ºC high temperature dyeing, colored light unchanged. Copper ions in dyeing color shade unchanged, encounter iron ion colour and lustre micro have change. Compatibility value is 2.5, the f value is 0.29. Solubility of 40 g/L, effected by temperature is very small. Mainly used in acrylic dyeing, also can be in acrylic fiber directly on printing.