Description

2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[[4-[[5-hydroxy-6-[(4-methoxy-2-sulfophenyl)azo]-7-sulfo-2-naphthalenyl]amino]-6-(4-morpholinyl)-1,3,5-triazin-2-yl]amino]-3-[(2-sulfophenyl)azo]-, pentasodium salt is a high-performance, polyfunctional azo dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple sulfonic acid groups and a reactive triazine moiety, provides exceptional properties for creating vivid and durable colorants. This compound is essential for manufacturers requiring advanced dye synthesis capabilities, particularly in the textile and specialty ink sectors. Its pentasodium salt form ensures good solubility and handling characteristics for downstream processing.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-grade reactive dyes for cotton, wool, and nylon, offering excellent wash and light fastness.
• Textile Colorant Production: Used in manufacturing dyes for the textile industry, providing a range of bright and stable colors.
• Specialty Ink Formulations: Serves as a precursor for pigments and dyes used in inks for packaging, security printing, and digital textiles.
• Leather Dyeing: Employed in the production of dyes for the leather tanning and finishing industry.
• Paper Coloring: Used in the manufacture of dyes for high-quality paper and board products.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel chromophores, dye chemistry, and material science.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[[4-[[5-hydroxy-6-[(4-methoxy-2-sulfophenyl)azo]-7-sulfo-2-naphthalenyl]amino]-6-(4-morpholinyl)-1,3,5-triazin-2-yl]amino]-3-[(2-sulfophenyl)azo]-, pentasodium salt
CAS No.	2184-15-8
Molecular Formula	C40H28N10Na5O20S5 (or related formulation based on isomerism)
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (principal commercial name); C.I. 20505; Pentasodium 4-hydroxy-3-[(2-sulfophenyl)azo]-5-[[4-[[5-hydroxy-6-[(4-methoxy-2-sulfophenyl)azo]-7-sulfo-2-naphthyl]amino]-6-morpholino-1,3,5-triazin-2-yl]amino]-2,7-naphthalenedisulfonate; Remazol Black B; Sumifix Black B; Levafix Black EB; Dianix Black BG-SF; Procion Black H-EXL
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical methods including HPLC for purity and assay, spectrophotometry for color strength, and tests for insoluble matter and heavy metals. Certificates of Analysis (COA) detailing all relevant specifications are provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance and handling. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (as dye content)
Color Strength	95 - 105% (vs. standard)
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 0.5%
Heavy Metals (as Pb)	Max. 50 ppm
pH (1% Solution)	6.0 - 8.0

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