Description

Diamine Green B is a synthetic organic dye belonging to the azo dye class, identified by CAS NO 5422-17-3. This compound is valued for its strong, stable green coloration and its utility in various industrial coloring processes. It is primarily used by manufacturers in the textile, leather, and specialty paper industries seeking consistent and vibrant dyeing results.

Application

• Textile Dyeing: Used for coloring natural and synthetic fibers, including cotton, wool, and nylon, to achieve a durable green shade.
• Leather Finishing: Applied in the dyeing of leather goods such as footwear, bags, and upholstery for uniform color penetration.
• Paper Staining: Employed in the production of specialty papers, including decorative and packaging materials.
• Ink Formulation: Serves as a colorant in the manufacture of printing inks for various applications.
• Biological Staining (Research Grade): Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be incorporated as a pigment for coloring certain plastic materials during production.

Basic Information

Product Name	Diamine Green B
CAS No.	5422-17-3
Molecular Formula	C28H20N6Na2O8S2
Molecular Weight	678.66 g/mol
Synonyms	Acid Green 20; C.I. 20495; Diamond Green B; Wool Green B; Azo Green B; Direct Green B; Benzo Green B; Sodium 4-[(4-aminophenyl)(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-2-methylbenzene-1,4-diamine-6,8-disulfonate
EINECS	226-565-7

Quality Control

Our Diamine Green B is produced under a strict quality management system to ensure batch-to-batch consistency and reliability. Each lot is tested against stringent in-house specifications, which typically include parameters for color strength, purity, solubility, and absence of heavy metals. A Certificate of Analysis (COA) detailing these results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials and sources of heat. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark green powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Water Solubility	Freely soluble
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.