Description

Disodium 3-[[3,3'-Dimethyl-4'-[[4-[[(p-Tolyl)Sulphonyl]Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxy-5-[[(p-Tolyl)Sulphonyl]Oxy]Naphthalene-2,7-Disulphonate is a high-purity, synthetic organic dye intermediate characterized by its complex disazo and disulfonate 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 sought by manufacturers in the textile dyeing, ink formulation, and specialty pigment industries for creating high-performance dyes and colorants.

Application

• Textile Dyeing: A key intermediate for synthesizing high-performance azo dyes used on cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the production of pigments for industrial inks, including packaging and printing inks.
• Specialty Pigments: Serves as a precursor for creating complex organic pigments with enhanced durability.
• Research & Development: Employed in chemical research for developing new chromophores and functional dyes.
• Functional Materials: Potential use in the synthesis of dyes for optical applications and sensors.

Basic Information

Item	Details
Product Name	Disodium 3-[[3,3'-Dimethyl-4'-[[4-[[(p-Tolyl)Sulphonyl]Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxy-5-[[(p-Tolyl)Sulphonyl]Oxy]Naphthalene-2,7-Disulphonate
CAS No.	68345-21-1
Molecular Formula	C48H36N4Na2O12S4
Molecular Weight	1050.1 g/mol (approx.)
Synonyms	Disodium 4-hydroxy-3-[[4'-[4-(p-tolylsulfonyloxy)phenylazo]-3,3'-dimethylbiphenyl-4-yl]azo]-5-(p-tolylsulfonyloxy)naphthalene-2,7-disulphonate; C.I. Direct Yellow 106; Direct Yellow 106; Azo dye intermediate 68345-21-1; Light Yellow 3G; Direct Fast Yellow 5GL; 4-Hydroxy-3-[[4'-[4-[(4-methylphenyl)sulfonyloxy]phenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-5-[(4-methylphenyl)sulfonyloxy]-2,7-naphthalenedisulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A Certificate of Analysis (COA) detailing all test results is provided with each shipment 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 room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Solubility (Water)	Soluble, clear solution

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