Description

Sodium Bis[1-[(2-Hydroxy-5-Nitrophenyl)Azo]-2-Naphtholato(2-)]Chromate(1-) is a high-purity, complex chromium azo dye compound valued for its specific coordination chemistry and colorant properties. This product is engineered for applications requiring precise molecular structure and consistent performance, offering reliable quality for industrial and research use. It is primarily utilized in specialized manufacturing sectors, including advanced pigments, analytical chemistry, and materials science research, where its unique chromophoric characteristics are essential.

Application

• As a key intermediate or colorant in the synthesis of high-performance organic pigments and dyes.
• In the formulation of specialized inks and coatings where specific light-fastness and color properties are required.
• As a complexometric agent or indicator in analytical chemistry and laboratory research.
• For use in materials science research, particularly in studies involving metal-organic complexes.
• Potential application in the development of functional dyes for non-textile uses.

Basic Information

Product Name	Sodium Bis[1-[(2-Hydroxy-5-Nitrophenyl)Azo]-2-Naphtholato(2-)]Chromate(1-)
CAS No.	57206-81-2
Molecular Formula	C34H20CrN6NaO7
Molecular Weight	699.55 g/mol (approx.)
Synonyms	Sodium Chromate Bis(1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholate); C.I. Mordant Brown 33, Sodium Salt; Chromate(1-), bis[1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]-, sodium; Sodium 1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholate chromium complex; Chromium complex of 1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthol, sodium salt; Mordant Brown 33 (Sodium Salt)
EINECS	Contact for details

Quality Control

Our Sodium Bis[1-[(2-Hydroxy-5-Nitrophenyl)Azo]-2-Naphtholato(2-)]Chromate(1-) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet our high standards. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and compliance for your applications.

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 degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Chromium Content	7.0 - 8.5%

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