Description
CI 18690 is classed chemically as a monoazo colour. It is a chromium complex of the color
Chemical Properties
Dark yellow powder. Slightly soluble in water, freely soluble in ethylene glycol ether, DMF and ethanol.
Uses
Solvent Yellow 21 is mainly used for coloring various plastic products, as well as for coloring paints, inks, and other supplies. As a leather spraying yellow GL, it is mainly used for spraying or curtain coating of natural leathers such as pigskin, cowhide, and sheepskin, and is particularly suitable for spraying and coloring aniline leather. As a neutral yellow 2GL, it is used for dyeing wool, silk, and nylon, as well as for direct printing on fabrics. It has excellent lightfastness and is also used for leather coloring.
Preparation
3-Amino-4-hydroxybenzenesulfonic aciddiazo, and 3-Oxo-N-phenylbutanamide coupling, and then and chlorinated cobalt complexation and filtering.
Flammability and Explosibility
Non flammable
Properties and Applications
the original dyes as deep yellow powder. Slightly soluble in water, soluble in ethylene glycol ether and DMF and organic solvent such as ethanol, soluble in organic solvent for tan after solution is finished product. Mainly used for pigskin, such as cow leather, goat natural leather finishing the spray or curtains, especially suitable for aniline leather spraying shading.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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AATCC
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