Product Introduction
Acid red 138 CAS# 15792-43-5 is a monoazo dye with the appearance of dark red powder. It dissolves in water readily. Slightly soluble in ethanol and acetone. The water solution shows bluish red color. Very brilliant hue.
Mainly used in the dyeing of wool. And can be used in the dyeing of silk and nylon/polyamide.
pH 5.0-5.5 recommended for the dyeing of wool; pH 5.0-5.5 recommended for the dyeing of nylon/polyamide.
Physical and Chemical Parameters
|
Appearance |
Dark Red Powder |
|
pH Value (1% Water Solution) |
8.50-10.50 |
|
Strength |
98%-101% |
|
Color Difference CMC (2:1) |
≤0.50 |
|
Moisture |
≤8.00% |
|
Insoluble |
≤0.200% |
|
Solubility (90℃) |
≥70g/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 |
4-5 4-5 4-5 |
4-5 4-5 4 |
4-5 4-5 |
4-5 4-5 4-5 |
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