Description

Disodium 3-[[2,2'-Dimethyl-4'-[[4-[(Phenylsulphonyl)Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate is a high-purity, synthetic organic dye belonging to the azo and disulfonate chemical class. This compound is valued for its strong colorant properties and structural stability, making it a critical intermediate for producing vivid and durable pigments. It is primarily sought by manufacturers in the textile, ink, and specialty coatings industries for applications requiring precise color formulation and performance under industrial conditions.

Application

• Textile Dyeing: As a key intermediate for producing high-performance dyes for synthetic and natural fibers.
• Ink Manufacturing: Used in the formulation of industrial and specialty printing inks, including for packaging and security applications.
• Pigment Production: Serves as a precursor in the synthesis of organic pigments for plastics, paints, and coatings.
• Research & Development: Employed in chemical research as a model compound for studying azo dye chemistry and photostability.
• Specialty Coatings: Utilized in colorants for automotive, industrial, and decorative coatings where color fastness is required.

Basic Information

Product Name	Disodium 3-[[2,2'-Dimethyl-4'-[[4-[(Phenylsulphonyl)Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	6470-38-8
Molecular Formula	C40H26N4Na2O11S3
Molecular Weight	888.80 g/mol
Synonyms	Acid Red 359; C.I. 18215; Disodium 3-[[2,2'-dimethyl-4'-[[4-[(phenylsulfonyl)oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-4-hydroxy-2,7-naphthalenedisulfonate; 3-[[2,2'-Dimethyl-4'-[[4-[(phenylsulfonyl)oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt; Azo dye intermediate 6470-38-8; C.I. Acid Red 359
EINECS	Contact for details

Quality Control

Our production of Disodium 3-[[2,2'-Dimethyl-4'-[[4-[(Phenylsulphonyl)Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate 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. Certificates of Analysis (COA) documenting all critical parameters are provided to guarantee traceability and compliance with your quality standards.

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 to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark red 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
Solubility (in water)	Partially soluble

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