Description

4-Amino-5-Hydroxy-6-[2-Sodiosulfo-5-(4-Vinylsulfonylbutyrylamino)Phenylazo]-3-(4-Vinylsulfonylphenylazo)-2,7-Naphthalenedisulfonic Acid Disodium Salt is a high-purity, reactive dye intermediate essential for creating covalent bonds with textile fibers. This compound is engineered to deliver superior color fastness and wash durability in demanding industrial dyeing processes. It is a critical raw material for manufacturers of high-performance reactive dyes targeting the textile, leather, and specialty paper industries.

Application

• Reactive Dye Synthesis: Primary intermediate for manufacturing high-quality fiber-reactive dyes, particularly for cellulose fibers like cotton, viscose, and linen.
• Textile Dyeing and Printing: Imparts excellent wash, light, and perspiration fastness properties to dyed fabrics, making it ideal for high-end apparel and home textiles.
• Leather Coloring: Used in the formulation of dyes for leather goods requiring vibrant, durable colors.
• Paper Dyeing: Suitable for specialty paper products where color stability is paramount.
• Biomolecule Labeling: Potential application in research and diagnostics due to its reactive vinyl sulfonyl groups, which can bind to proteins and other biomolecules.
• Advanced Material Functionalization: Can be used to introduce chromophoric groups onto polymers or other materials for functional coatings.

Basic Information

Item	Detail
Product Name	4-Amino-5-Hydroxy-6-[2-Sodiosulfo-5-(4-Vinylsulfonylbutyrylamino)Phenylazo]-3-(4-Vinylsulfonylphenylazo)-2,7-Naphthalenedisulfonic Acid Disodium Salt
CAS No.	98635-34-8
Molecular Formula	C34H28N6Na2O15S5
Molecular Weight	Contact for details
Synonyms	Reactive Dye Intermediate 98635-34-8; Disodium 4-amino-5-hydroxy-6-[2-sodiosulfo-5-[(4-vinylsulfonylbutanoyl)amino]phenyl]diazenyl-3-[(4-vinylsulfonylphenyl)diazenyl]naphthalene-2,7-disulfonate; Bis(vinylsulfonyl) reactive dye intermediate; Azo dye intermediate with dual vinyl sulfone groups; C.I. Reactive Black 5 related intermediate; VS-BA reactive intermediate
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high chemical purity. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity, strength, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and specific tests is provided with each shipment to support your quality assurance processes.

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). Due to its hygroscopic nature, the container must be kept sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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