Description

Chromate(3-), [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]-, triammonium is a complex, high-purity metallized azo dye salt designed for advanced industrial applications. Its precise molecular structure provides exceptional color strength and stability, making it a critical component for performance-driven formulations. This product is essential for manufacturers in sectors requiring durable, high-value colorants with specific technical properties.

Application

• High-Performance Pigments: Primary use in the formulation of complex inorganic color pigments (CICPs) and specialty dyes for plastics, coatings, and inks.
• Automotive and Industrial Coatings: Imparts durable, weather-resistant coloration for automotive OEM and refinish paints, as well as industrial protective coatings.
• Advanced Polymers and Engineering Plastics: Used as a colorant masterbatch for high-temperature processing applications in nylon, polyester, and other engineering resins.
• Security Printing and Specialty Inks: Suitable for banknote printing, tax stamp inks, and other security applications requiring unique optical properties.
• Textile Dyeing (Specialty Fibers): Employed in the dyeing of high-performance synthetic fibers where standard dyes lack sufficient fastness.
• Research and Development: Serves as a key intermediate or reference standard in the development of new colorant molecules and material science research.

Basic Information

Product Name	Chromate(3-), [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]-, triammonium
CAS No.	73514-04-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Pigment Brown 33; Triammonium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]chromate(3-); Chromium complex of an azo dye; Metallized azo brown pigment; C.I. 21115; Pigment Brown 33 (C.I. 21115); Triammonium chromium azo dye complex
EINECS	Contact for details

Quality Control

Our Chromate(3-), [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]-, triammonium is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Production is supported by advanced analytical techniques including HPLC and spectrophotometry to verify critical parameters such as color strength, hue, and impurity profiles. Certificates of Analysis (COA) documenting purity, heavy metal content, and other key specifications are provided with every shipment.

Storage

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

Specification

Item	Specification
Appearance	Brown powder or solid
Identification (IR)	Conforms to standard
Assay (Chromium Content)	Contact for details
Color Strength	± 5% of standard
Hue	Matches reference
Moisture Content	≤ 5.0%
Sieve Residue	≤ 1.0% (on 45μm)
Heavy Metals (as Pb)	≤ 50 ppm

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