Description

Iron, complexes with diazotized 2-amino-4,6-dinitrophenol monosodium salt coupled with diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 4-amino-3-methylbenzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol CAS NO 71662-50-5 is a complex, multi-component azo dye intermediate. This compound is valued for its ability to form stable, deeply colored complexes with iron, making it a critical precursor in the production of high-performance pigments and dyes. It is primarily sought by manufacturers in the colorant, ink, and specialty coatings industries who require consistent, high-purity intermediates for quality assurance in their final products.

Application

• Primary use as a key intermediate in the synthesis of high-grade, complex azo pigments and dyes.
• Manufacture of specialty colorants for industrial inks, including printing and packaging inks.
• Production of pigments for coatings and paints, particularly where enhanced color strength and stability are required.
• Potential use in the formulation of colored polymers and plastics.
• Research and development of novel functional dyes for specialized optical or electronic applications.
• As a standard or reference material in analytical and quality control laboratories within the color chemistry sector.

Basic Information

Item	Detail
Product Name	Iron, complexes with diazotized 2-amino-4,6-dinitrophenol monosodium salt coupled with diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 4-amino-3-methylbenzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol
CAS No.	71662-50-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Iron complex azo dye intermediate; C.I. Pigment Black 1 (related complex); Azo iron complex; Diazotized nitroaminophenol iron complex; Iron-azo resorcinol complex; 2-Amino-4,6-dinitrophenol, diazotized, coupled iron complex; 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized, iron complex
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality protocols to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analysis, including purity assay and identification tests. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 2.0%
Residue on Ignition	Max. 1.0%
Heavy Metals (as Pb)	Max. 20 ppm

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