Description

2-[[4-[[2-Hydroxy-5-[(4-Nitro-2-Sulfophenyl)Amino]Phenyl]Azo]Phenyl]Amino]-5-Nitrobenzenesulfonic Acid is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure is engineered to deliver precise color characteristics and functional properties in advanced applications. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries who require consistent, high-performance intermediates for their production processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of high-value, complex azo dyes, particularly for textiles and leather.
• Specialty Ink Formulations: Used in the production of pigments for inks requiring specific lightfastness and color stability, including some printing and packaging inks.
• Functional Dye Synthesis: A precursor for dyes used in non-textile applications such as lasers, optical data storage, and liquid crystal displays (LCDs).
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: Can be utilized as a reagent or standard in analytical methods for dye identification and quantification.

Basic Information

Product Name	2-[[4-[[2-Hydroxy-5-[(4-Nitro-2-Sulfophenyl)Amino]Phenyl]Azo]Phenyl]Amino]-5-Nitrobenzenesulfonic Acid
CAS No.	68134-19-0
Molecular Formula	C24H18N6O10S2
Molecular Weight	614.56 g/mol
Synonyms	Acid Orange 61; C.I. 18965; 5-Nitro-2-[[4-[(2-hydroxy-5-[(4-nitro-2-sulfophenyl)amino]phenyl)azo]phenyl]amino]benzenesulfonic acid; Benzenesulfonic acid, 2-[[4-[[2-hydroxy-5-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]phenyl]amino]-5-nitro-; 2-[[4-[[2-Hydroxy-5-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]phenyl]amino]-5-nitrobenzenesulfonic acid; Azo dye intermediate 68134-19-0; C.I. Acid Orange 61
EINECS	Contact for details

Quality Control

Our production of 2-[[4-[[2-Hydroxy-5-[(4-Nitro-2-Sulfophenyl)Amino]Phenyl]Azo]Phenyl]Amino]-5-Nitrobenzenesulfonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent performance. Certificates of Analysis (COA) documenting all critical quality attributes are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The container should be kept tightly sealed when not in use to protect from moisture.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Typical 97-99%)
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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