Direct Blue 2B is a water-soluble, dark blue powder used for dyeing materials like cotton, silk, paper, and leather. It has good affinity for cellulose fibers and is also used in products like soap and detergents. Key properties include good purity and solubility in water, though it has poor fastness to bleaching and is slightly sensitive to hard water.
Basic details of Direct Blue 2B
|
Chemical Name |
Direct Copper Blue 2B |
|
Molecular Formula |
C32H20N6Na4O14S4 |
|
CAS Number |
2602-46-2 |
|
Molecular Weight |
932.76 g/mol |
|
Appearance |
Dark blue to bluish-black uniform powder |
|
Solubility |
Soluble in water |
Applications
Textiles: Used for dyeing a variety of fibers including cotton, viscose, rayon, linen, jute, and silk.
Paper: Can be used to color paper and pulp.
Leather: Used for dyeing leather products.
Properties
Light fastness: 3-4
Washing fastness: 2-3
Rubbing fastness: Good
Prespiration fastness: 2-3
Handling
To handle Direct Blue 6, wear comprehensive personal protective equipment (PPE) including gloves, protective clothing, and eye protection. Obtain special instructions before use and take extreme caution, as it is classified as a potential human carcinogen and hazardous if inhaled or ingested.
Storage
Light and Heat: The dye should be kept out of direct sunlight and away from heat sources to maintain its stability and potency.
Ventilation: A dry, well-ventilated storage area is recommended.
Inert Gas (Specific Formulations): Some specific chemical formulations may require storage under an inert gas.
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: