Direct Yellow G
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Direct Yellow G is an orange powder, which is diazotized by DSD acid and coupled with two molecules of phenol, and then converted to ethoxy groups on the phenol by ethyl chloride. Produced by Milestone Industrial Co. Ltd Direct Yellow G can be used to dye cotton, linen, viscose, rayon and other fiber fabrics with stable performance.
Other name: Chrysophenine GX
C.I. Direct yellow 12 (24895)
CAS NO.: 2870-32-8
Relative molecular weight: 680.67
Dissolution: soluble in water.
Direct Yellow G Technical:
Apperance: Yellow powder
Color light: Similar to the standard
Fluorescent strenght: 100
Water content: 5% max
Water insoluble matter content: 1% max
Fineness: min. 8% pass 80 mesh
Residual amount of sieve: ≤5%
Direct Yellow G nature:
1）Dissolve 1 g of Direct Yellow G dye in 50 ml of water. When the temperature is≤15℃, it will become a jelly, hence the name Frozen Yellow.
2）Direct Yellow G dyes cellulosic fibers with good dye exhaustion performance, maximum affinity at 40°C and good discharge performance.
Uses of Direct Yellow G:
Direct Yellow G is mainly used for dyeing of cellulose fiber fabrics such as cotton, linen, viscose, rayon, rayon, silk, nylon and other fabrics and dyeing of blended fabrics. It can also be used for dyeing of leather, pulp, and biology. As well as making lakes and pigments.
Other properties of Direct Yellow G:
When the concentrated solution of Direct Yellow G is cooled, there is a jelly-like precipitation, so it is called jelly. It is red and green lotus color in concentrated sulfuric acid solution, and turns into green lotus color after dilution or produces red light blue precipitate. The maximum absorption wavelength is 389nm.