Description

Disodium 8-[[4-[[(4-Methylphenyl)Sulphonyl]Oxy]Phenyl]Azo]-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]Naphthalene-1-Sulphonate is a high-purity, synthetic azo dye intermediate known for its complex disulphonated structure. This compound is valued for its role in producing vivid and stable colorants, particularly in applications requiring high lightfastness and chemical resistance. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries for creating advanced pigments and dyes.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance red and orange azo pigments.
• Textile Dyeing: Used in the production of dyes for coloring synthetic and natural fibers, offering good wash and light fastness.
• Ink Manufacturing: Employed in the formulation of printing inks for packaging, publications, and textiles.
• Industrial Coatings: Incorporated into coatings for plastics, metals, and other substrates requiring durable coloration.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo dye chemistry.
• Specialty Chemical Synthesis: Acts as a precursor for more complex sulfonated aromatic compounds.

Basic Information

Product Name	Disodium 8-[[4-[[(4-Methylphenyl)Sulphonyl]Oxy]Phenyl]Azo]-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]Naphthalene-1-Sulphonate
CAS No.	72968-81-1
Molecular Formula	C35H24N6Na2O12S3
Molecular Weight	878.77 g/mol
Synonyms	Disodium 8-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-5-[[4-[(4-nitro-2-sulfonatophenyl)amino]phenyl]azo]naphthalene-1-sulfonate; CI 27290; Pigment Red 272; Azo dye intermediate 72968-81-1; 1,5-Naphthalenedisulfonic acid, 8-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-5-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]-, disodium salt; Disulfonated azo dye precursor
EINECS	Contact for details

Quality Control

Our production of Disodium 8-[[4-[[(4-Methylphenyl)Sulphonyl]Oxy]Phenyl]Azo]-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]Naphthalene-1-Sulphonate adheres to stringent quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in water)	Soluble, clear solution

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