Description

3-[[2,4-Diamino-5-[[4-(4-Nitro-2-Sulphoanilino)Phenyl]Azo]Phenyl]Azo]-5-Sulphosalicylic Acid is a complex, high-purity azo dye intermediate characterized by its multi-sulfonated and diazo-substituted aromatic structure. This compound matters for its role as a critical precursor in the synthesis of specialized, high-value dyes and pigments, offering excellent color fastness and solubility properties. It is primarily needed by manufacturers in the textile, leather, and specialty chemical industries seeking to produce vivid, durable colors. The product is supplied with a CAS No. 70660-45-6 and is handled according to its specific chemical properties to ensure optimal performance and stability.

Application

This specialized azo intermediate serves as a key building block in several high-performance industrial applications:

• Textile Dye Synthesis: Primary use in manufacturing acid dyes and direct dyes for coloring nylon, wool, silk, and paper.
• Leather Coloring Agent: Used in the production of dyes for achieving deep, uniform shades on leather goods.
• Ink Pigment Precursor: Acts as an intermediate for creating pigments used in high-quality printing inks.
• Biological Staining Reagent: Potential use in the synthesis of stains for histological and cytological applications in laboratories.
• Research & Development: Serves as a valuable compound for chemical research, particularly in organic synthesis and dye chemistry studies.
• Specialty Chemical Intermediate: Employed in the synthesis of other complex aromatic compounds for various industrial processes.

Basic Information

Product Name	3-[[2,4-Diamino-5-[[4-(4-Nitro-2-Sulphoanilino)Phenyl]Azo]Phenyl]Azo]-5-Sulphosalicylic Acid
CAS No.	70660-45-6
Molecular Formula	C25H20N8O10S2
Molecular Weight	656.60 g/mol
Synonyms	5-Sulphosalicylic Acid, 3-[[2,4-diamino-5-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]phenyl]azo]-; Acid Black 210; C.I. 300310; 3-((2,4-Diamino-5-((4-((4-nitro-2-sulfophenyl)amino)phenyl)diazenyl)phenyl)diazenyl)-5-sulfosalicylic acid; 5-Sulfosalicylic acid, azo derivative; Azo dye intermediate 70660-45-6; Black 210 dye intermediate
EINECS	Contact for details

Quality Control

Our production of 3-[[2,4-Diamino-5-[[4-(4-Nitro-2-Sulphoanilino)Phenyl]Azo]Phenyl]Azo]-5-Sulphosalicylic Acid adheres to stringent quality protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet the high standards required for dye intermediate applications. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics are available upon request. Our quality system is designed to support our commitment to reliable supply and batch-to-batch uniformity for our global B2B customers.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and 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 opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in alkaline aqueous solutions

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