Direct Yellow 19
Name:C.I.Direct Yellow 19,C.I.40030
Molecular Structure: azo,Stilbenes
Molecular Formula:
Molecular Weight:
CAS Registry Number:1325-45-7
Manufacturing Methods : under pressure with monomer (VCM) processing in Direct Dye (C.I. 40025), make its hydroxyl ethyl change. The product is a mixture of, one of the components may be C.I. Direct Yellow 12 (C.I. 24895). Note: C.I. 40025 is a mixture of, one of the components is C.I. Direct Yellow 4 (C.I. 24890).
Properties and Applications: brilliant yellow. Soluble in water for the red light yellow, also soluble in ethanol, insoluble in carbon tetrachloride. The strong sulfuric acid for purple, dilute precipitation after dark brown. Used for cellulose fiber dyeing, fiber fabric and silk printing, good levelness.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| AATCC | 5 | 1 | 3 | 3 | 1 | ||
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