Product Introduction
Acid red 131 CAS# 12234-99-0 is a monoazo dye with the appearance of dark red powder. It dissolves in water. The water solution shows reddish color.
Mainly used in the dyeing and printing of wool, silk and nylon/polyamide.
pH 4.0-5.5 recommended for the dyeing of wool; pH 4.0-5.0 recommended for the dyeing of nylon/polyamide.
Physical and Chemical Parameters
|
Appearance |
Dark Red Powder |
|
pH Value ( 1% Water Solution) |
6.40-8.40 |
|
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 |
|
3-4 |
4 5 4 |
4 3 3 |
4-5 4-5 |
4 3-4 4 |
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