Direct brilliant yellow refers to a class of organic dyes, such as Direct Yellow 4, that are bright yellow and used primarily for coloring paper, textiles, and leather. These dyes are water-soluble, appearing as powders that are golden to reddish-yellow when dissolved, and are often anionic, with characteristics like good light and moisture resistance, and good dispersal properties.
Basic details of Direct Brilliant Yellow
|
Chemical Name |
Direct Yellow 4 |
|
Molecular Formula |
C26H18N4Na2O8S2 |
|
CAS Number |
3051-11-4 |
|
Molecular Weight |
624.55 g/mol |
|
Appearance |
Yellow to orange powder |
|
Solubility |
Soluble in water and ethanol |
Applications
Paper: Used for coloring various types of paper.
Textiles: Used for dyeing textiles, particularly cellulosic fibers.
Leather: Used for coloring leather.
Inks: Used in the manufacturing of inks.
Properties
Light fastness: 4-7
Washing fastness: 2-4
Rubbing fastness: 2-5
Prespiration fastness: Good
Handling and Storage
To handle direct brilliant yellow, store it in a cool, dry place away from sunlight in a tightly closed container to maintain its stability. When using it, dissolve the powder in water and apply it according to standard dyeing procedures for your specific material. Always wash hands thoroughly after handling and avoid contact with eyes and ingestion.
Keep in a cool, dry, well-ventilated area.
Store away from direct sunlight and heat sources.
Ensure the container is tightly closed to preserve its quality and shelf life.
Store in its original packaging, such as a bag with an inner liner, when possible.
PACKAGING
Common packaging sizes include 25 kg and 50 kg HDPE Bags// HDPE Drums //Corrugated Boxes
Custom Packaging: Many suppliers offer custom packaging to suit different client requirements.
Price: