Product Introduction
Acid yellow 42 Cas# 6375-55-9 is a diazo dye with the appearance of yellow powder. It dissolves easily in water. Soluble in ethanol and slightly in acetone. The water solution shows yellowish color.
Mainly used in the dyeing of wool, nylon/polyamide and leather. And can also be used in direct printing for wool, silk and viscose. Good Discharging.
pH 4.5-5.5 recommended for the dyeing of wool; pH 4.5-5.5 recommended for the dyeing of nylon/polyamide.
Physical and Chemical Parameters
|
Appearance |
Yellow Powder |
|
pH Value (1% Water Solution) |
7.80-9.80 |
|
Strength |
98%-101% |
|
Color Difference CMC (2:1) |
≤0.50 |
|
Moisture |
≤8.00% |
|
Insoluble |
≤0.200% |
|
Solubility (90℃) |
≥60g/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 |
|
4-5 |
4-5 4-5 4-5 |
4 2-3 3-4 |
4-5 4-5 |
4-5 3-4 4-5 |
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