Description

4-Amino-6-[5-(5-Chloro-2-Fluoro-6-Methylpyrimidin-4-Ylamino)-2-Sulfophenylazo]-5-Hydroxy-3-(2,5-Disulfophenylazo)-2,7-Naphthalenedisulfonic Acid is a complex, high-purity azo dye intermediate essential for synthesizing specialized colorants. This compound matters for its ability to impart specific, stable color properties in demanding applications where conventional dyes fail. It is primarily needed by manufacturers in the textile, ink, and specialty polymer industries seeking to develop advanced, high-performance pigments.

Application

• Textile Dye Intermediate: A key precursor for synthesizing high-grade, wash-fast reactive dyes for cotton and polyamide fibers.
• Specialty Ink Formulation: Used in the production of colorants for high-resolution inkjet and security inks requiring precise color fidelity.
• Functional Polymer Coloring: Imparts color to engineering plastics and synthetic fibers where thermal and chemical stability are critical.
• Biological Staining Agent: Serves as an intermediate for developing specialized stains used in histological and cytological research.
• Liquid Crystal Display (LCD) Color Filters: A potential component in the synthesis of dyes for color filter arrays in display technologies.
• Analytical Chemistry Reagent: Used as a complexometric indicator or a chromogenic agent in specific spectrophotometric methods.

Basic Information

Product Name	4-Amino-6-[5-(5-Chloro-2-Fluoro-6-Methylpyrimidin-4-Ylamino)-2-Sulfophenylazo]-5-Hydroxy-3-(2,5-Disulfophenylazo)-2,7-Naphthalenedisulfonic Acid
CAS No.	72630-61-6
Molecular Formula	C27H18ClFN10O16S5
Molecular Weight	1021.23 g/mol
Synonyms	Acid Black 234 Intermediate; C.I. 31795; Reactive Black 5 Related Intermediate; 4-Amino-6-[[5-[(5-chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino]-2-sulfophenyl]azo]-5-hydroxy-3-[(2,5-disulfophenyl)azo]-2,7-naphthalenedisulfonic acid; Azo Dye Intermediate 72630-61-6; Trisulfonated Azo Dye Precursor; 2,7-Naphthalenedisulfonic acid derivative
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems (ISO 9001) to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analysis via HPLC, NMR, and mass spectrometry to verify chemical identity and impurity profiles. A detailed Certificate of Analysis (COA) documenting assay, related substances, and physical properties is provided with each 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 a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed in a dry environment to prevent degradation.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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