2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[4-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, pentasodium salt CAS NO 68991-99-1

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CAS No.:68991-99-1

Grade:Pharmacy Grade

Content:99.9%

Brand:Customizable

Packaging:Customizable

Description

2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[4-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, pentasodium salt is a high-purity, complex anionic dye intermediate and specialty chemical. Its value lies in its precise molecular structure, which is engineered to deliver exceptional color fastness and reactivity in demanding industrial processes. This compound is primarily needed by manufacturers in the textile, leather, and specialty ink industries for producing high-performance dyes and pigments.

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.
Leather Dyeing: Used in the formulation of dyes for leather, providing deep, uniform coloration with good penetration.
Inkjet Ink Formulation: Serves as a colorant precursor in the production of specialty inks for industrial and textile printing.
Paper Coloring: Employed in the manufacture of dyes for high-quality paper and packaging materials.
Research & Development: Used as a standard or starting material in chemical research for developing new chromophores and functional dyes.
Functional Polymer Synthesis: Can be incorporated into polymers to impart specific optical or ionic properties.

Basic Information


Product Name	2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[4-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, pentasodium salt
CAS No.	68991-99-1
Molecular Formula	C34H18Cl2N12O16S5·5Na
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (Pentasodium Salt); C.I. 20505; Remazol Black B (Pentasodium Salt); Vinylsulfone Black B; Levafix Black EB; Sumifix Black B; Dianix Black BG-SF; Pentasodium 5-acetamido-4-hydroxy-3-[[4-[[4-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2,7-naphthalenedisulfonate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to rigorous quality control protocols to ensure batch-to-batch consistency and purity for optimal performance in downstream synthesis. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, assay, impurity profile, and physical specifications is provided with every 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, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect performance. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	7.0 - 9.0