Description

Disodium 5-[[4'-[(2,4-Diamino-5-Sulphonatophenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing vibrant and stable colorants, particularly in applications requiring specific hue and fastness properties. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance dyes and pigments.

Application

• Textile Dyeing: A key intermediate for the synthesis of acid dyes and direct dyes used on wool, silk, nylon, and paper.
• Ink Formulation: Used in the production of colorants for inks in packaging, printing, and writing instruments.
• Specialty Pigments: Serves as a precursor for creating high-performance organic pigments with excellent color strength.
• Biological Staining: Potential use as an intermediate for histochemical stains and indicators in laboratory settings.
• Functional Dyes: Can be utilized in the development of dyes for non-textile applications, such as in lasers or optical data storage.
• Research & Development: Employed as a standard or building block in chemical research for novel chromophore synthesis.

Basic Information

Item	Detail
Product Name	Disodium 5-[[4'-[(2,4-Diamino-5-Sulphonatophenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate
CAS No.	67893-48-5
Molecular Formula	C33H26N6Na2O7S
Molecular Weight	696.64 g/mol
Synonyms	Acid Orange 156; C.I. 26501; Disodium 5-[(4'-[(2,4-diamino-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl)azo]salicylate; 5-[[4'-[(2,4-Diamino-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]salicylic acid disodium salt; Salicylic acid, 5-[[4'-[(2,4-diamino-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-, disodium salt; Azo dye intermediate 67893-48-5; Direct Orange S
EINECS	Contact for details

Quality Control

Our Disodium 5-[[4'-[(2,4-Diamino-5-Sulphonatophenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Salicylate is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and relevant specifications are available upon request to support your quality assurance protocols.

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 each use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Orange to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.