Product Introduction
Acid yellow 128 CAS# 51053-43-1 is a monoazo and 1:2 chromium complex dye with the appearance of dark yellow powder. It dissolves in water. The water solution shows yellow color.
Mainly used in the dyeing of wool, silk, and especially in vinylon and nylon/polyamide. Direct printing for wool, silk and nylon/polyamide. It can also be used in the dyeing of leather.
pH 5.0-5.5 recommended for the dyeing of wool; pH 5.5-7.5 recommended for the dyeing of nylon/polyamide.
Physical and Chemical Parameters
|
Appearance |
Dark Yellow Powder |
|
pH Value (1% Water Solution) |
8.00-10.00 |
|
Strength |
98%-101% |
|
Color Difference CMC (2:1) |
≤0.50 |
|
Moisture |
≤8.00% |
|
Insoluble |
≤0.200% |
|
Solubility (90℃) |
≥40g/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 |
4-5 3-4 5 |
4 4-5 5 |
5 4-5 |
4-5 4-5 5 |
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