Description

Chromium, 6(or 7)-amino-4-hydroxy-3-[(2- hydroxy-3,5-dinitrophenyl)azo]-2-naphthalenesulfonate 4-hydroxy-3-[(2-hydroxy-3, 5-dinitrophenyl)azo]-6(or 7)-[(sulfomethyl)amino]-2-naphthalenesulfonate ammonium potassium sodium complexes is a high-performance, metal-complex azo dye designed for demanding technical applications. Its complex structure provides exceptional color strength and stability, making it a critical component for industries requiring durable and vibrant coloration. This product is essential for manufacturers in sectors such as inks, coatings, and specialty plastics where lightfastness and chemical resistance are paramount.

Application

• High-Performance Printing Inks: Used in solvent-based and UV-curable inks for packaging, textiles, and industrial printing, offering excellent opacity and weatherability.
• Industrial Coatings and Paints: Imparts durable color to automotive primers, industrial finishes, and coil coatings that require resistance to chemicals and environmental exposure.
• Specialty Plastics and Masterbatches: Provides stable coloration for engineering plastics, synthetic fibers, and PVC, where high-temperature processing stability is needed.
• Security Printing and Dyes: Suitable for applications requiring specific spectral properties, such as in banknotes, security documents, and authentication markers.
• Leather Finishing: Used in dyes and finishes for leather goods to achieve deep, fast colors with good rub fastness.
• Paper Coatings and Specialty Papers: Employed in colored coatings for decorative papers, labels, and other high-value paper products.

Basic Information

Product Name	Chromium, 6(or 7)-amino-4-hydroxy-3-[(2- hydroxy-3,5-dinitrophenyl)azo]-2-naphthalenesulfonate 4-hydroxy-3-[(2-hydroxy-3, 5-dinitrophenyl)azo]-6(or 7)-[(sulfomethyl)amino]-2-naphthalenesulfonate ammonium potassium sodium complexes
CAS No.	127278-99-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Pigment Brown 38; Chromium complex of 6(or 7)-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]-2-naphthalenesulfonic acid and 4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]-6(or 7)-[(sulfomethyl)amino]-2-naphthalenesulfonic acid, ammonium potassium sodium salts; Azo chromium complex brown pigment; Metal complex brown dye; C.I. 125001; Dinaphthol azo chromium complex; Ammonium potassium sodium chromium azo sulfonate complex
EINECS	Contact for details

Quality Control

Our production of this metal-complex pigment adheres to rigorous quality control protocols to ensure batch-to-batch consistency in color value, strength, and particle size distribution. Quality is verified through advanced analytical techniques including HPLC, spectrophotometry, and ash content analysis. A comprehensive Certificate of Analysis (COA) detailing purity, metal content, 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, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Brown powder
Identification (IR)	Conforms
Color Strength	100% ± 5% (vs. Standard)
Ash Content	≤ 35%
Moisture Content	≤ 5.0%
Water Soluble Matter	≤ 1.0%
Particle Size (Hegman Grind)	≥ 6.0
pH (10% Aqueous Slurry)	6.0 - 8.0

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