Description

Hydrogen [1-[(2-Hydroxy-4-Nitrophenyl)Azo]-2-Naphtholato(2-)][1-[(2-Hydroxy-5-Nitrophenyl)Azo]-2-Naphtholato(2-)]Chromate(1-) is a complex chromium azo dye compound, also known as a chromium complex pigment. This product matters for its ability to provide excellent lightfastness, heat stability, and chemical resistance in demanding applications. It is primarily needed by manufacturers in the paints and coatings, plastics, and specialty inks industries seeking high-performance coloration.

Application

• High-Performance Paints and Industrial Coatings: Imparts durable color with superior weather resistance for automotive, coil, and architectural coatings.
• Plastics and Masterbatch Coloration: Used for coloring engineering plastics, PVC, and polyolefins requiring stability during high-temperature processing.
• Specialty Printing Inks: Suitable for inks where chemical and light resistance are critical, such as in packaging and security printing.
• Pigment Preparations and Dispersions: Serves as a key colorant in pre-dispersed pigment forms for easier handling and incorporation.
• Coloration of Synthetic Fibers: Used in the mass coloration of certain synthetic fibers during the polymer melt stage.

Basic Information

Product Name	Hydrogen [1-[(2-Hydroxy-4-Nitrophenyl)Azo]-2-Naphtholato(2-)][1-[(2-Hydroxy-5-Nitrophenyl)Azo]-2-Naphtholato(2-)]Chromate(1-)
CAS No.	52277-71-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Pigment Brown 29; Chromium Complex Brown; 1-[(2-Hydroxy-4-nitrophenyl)azo]-2-naphthalenol, chromium complex; 1-[(2-Hydroxy-5-nitrophenyl)azo]-2-naphthalenol, chromium complex; Azo Chromium Complex Brown; Chromium Azo Brown Pigment; Nitrophenylazonaphthol Chromium Complex
EINECS	Contact for details

Quality Control

Our production of this chromium complex pigment adheres to strict batch-to-batch consistency protocols. Quality is verified through comprehensive testing including color strength, hue, particle size distribution, and chemical purity analysis. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to ensure it meets your formulation requirements.

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 incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Brown Powder
Identification (IR)	Conforms
Assay (Chromium Content)	Contact for details
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Moisture Content	≤ 2.0%
Residue on Sieve (45μm)	≤ 1.0%
Lightfastness	≥ 7 (ISO 105-B02)
Heat Stability	≥ 200°C

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