Description

3-[(4-Nitrophenyl)Azo]-5-[(7-Sulpho-1-Naphthyl)Azo]Salicylic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart specific color properties and its reactivity in the synthesis of more complex dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of acid dyes and direct dyes for textile fibers like wool, silk, and nylon.
• Ink Manufacturing: Used in the formulation of specialized inks, including those for packaging and security printing applications.
• Pigment Production: Acts as a precursor in the manufacture of lake pigments and other colorants for plastics and coatings.
• Research & Development: Employed in chemical research for developing novel chromophores and studying azo coupling reactions.
• Analytical Reagent: Can be utilized as a colorimetric indicator or a complexing agent in specific analytical chemistry procedures.
• Specialty Chemical Synthesis: Used in the production of functional chemicals where its specific aromatic and azo structure is required.

Basic Information

Product Name	3-[(4-Nitrophenyl)Azo]-5-[(7-Sulpho-1-Naphthyl)Azo]Salicylic Acid, Sodium Salt
CAS No.	93940-54-6
Molecular Formula	C23H14N4Na2O8S
Molecular Weight	576.42 g/mol
Synonyms	Acid Orange 149; C.I. 17780; Sodium 3-[(4-nitrophenyl)azo]-5-[(7-sulfo-1-naphthyl)azo]salicylate; 5-[(7-Sulfo-1-naphthalenyl)azo]-3-[(4-nitrophenyl)azo]-2-hydroxybenzoic acid sodium salt; 2-Hydroxy-5-[(7-sulfo-1-naphthyl)azo]-3-[(4-nitrophenyl)azo]benzoic acid sodium salt; Benzoic acid, 2-hydroxy-5-[(7-sulfo-1-naphthalenyl)azo]-3-[(4-nitrophenyl)azo]-, sodium salt (1:2); Azo dye intermediate OA-149
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Nitrophenyl)Azo]-5-[(7-Sulpho-1-Naphthyl)Azo]Salicylic Acid, Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are available upon request.

Storage

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

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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