Product Introduction
Acid yellow 127 CAS# 73384-78-8 a monoazo dye with the appearance of yellow powder. It dissolves in water. The water solution shows greenish light yellow color. It is yellow in concentrated sulfuric acid and yellow in concentrated hydrochloric acid.
Mainly used in the dyeing and direct printing of wool, silk and nylon/polyamide. And can also be used in the dyeing of leather.
pH 4.5-5.5 recommended for the dyeing of wool; pH 5.0-6.0 recommended for the dyeing of nylon/polyamide.
Physical and Chemical Parameters
|
Appearance |
Yellow Powder |
|
pH Value (1% Water Solution) |
4.70-6.70 |
|
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 4-5 5 |
4-5 4 4-5 |
4-5 4-5 |
4-5 4 5 |
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