Product Introduction
Acid yellow 79 CAS# 12220-70-1 is a diazo dye with the appearance of yellow powder. It is water soluble. The water solution shows yellowish color.
Mainly used in the dyeing of wool and nylon/polyamide and its blends. And can also be used in the dyeing of leather and printing inks.
pH 5.0-6.0 recommended for the dyeing of wool; pH 5.50-6.0 recommended for the dyeing of nylon/polyamide.
Physical and Chemical Parameters
|
Appearance |
Yellow Powder |
|
pH Value (1% Water Solution) |
5.20-7.20 |
|
Strength |
98%-101% |
|
Color Difference CMC (2:1) |
≤0.50 |
|
Moisture |
≤8.00% |
|
Insoluble |
≤0.200% |
|
Solubility (90℃) |
≥50g/l |
|
Degree of Fineness (200um) |
≤8 |
|
Dust-Proof Performance |
≥2 |
Fastness Properties (Polyamide)
|
DYEING DEPTH (O.W.F) |
LIGHT (XENON) |
WASHING (50℃) |
PERSPIRATION (ALKALI) |
RUBBING |
WATER |
|
1% |
1/1 |
CH PA CO |
CH PA CO |
(DRY) (WET) |
CH PA CO |
|
6 |
5 5 5 |
4-5 4-5 4-5 |
5 4 |
5 5 5 |
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