Description

Benzenesulfonic Acid, Ar,Ar'-[(9,10-Dihydro-9,10- Dioxo-1,4-Anthracenediyl)Diimino]Bis[Methyl-, Sodium Salt is a specialized anthraquinone-derived dye intermediate, valued for its role in synthesizing high-performance colorants. Its structure is engineered to impart excellent lightfastness and thermal stability to the final pigments and dyes. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid and durable colors.

Application

• Primary Intermediate for Anthraquinone Dyes: A key building block in the synthesis of high-value, solvent-based and disperse dyes.
• Textile Dyeing and Printing: Used in the production of dyes for synthetic fibers like polyester, offering superior wash and light fastness.
• Industrial Ink Formulations: Imparts color stability in inks for packaging, textiles, and specialty printing applications.
• Pigment Manufacturing: Serves as a precursor in the creation of organic pigments for plastics and coatings.
• Research & Development: Utilized in chemical research for developing novel chromophores and functional materials.
• Specialty Coatings: Contributes to the colorant system in high-performance industrial and automotive coatings.

Basic Information

Product Name	Benzenesulfonic Acid, Ar,Ar'-[(9,10-Dihydro-9,10- Dioxo-1,4-Anthracenediyl)Diimino]Bis[Methyl-, Sodium Salt
CAS No.	72845-45-5
Molecular Formula	C30H20N2Na2O8S2
Molecular Weight	662.59 g/mol
Synonyms	1,4-Bis[(4-sulfophenyl)amino]anthraquinone disodium salt; C.I. Solvent Blue 36; 1,4-Bis(p-sulfoanilino)anthraquinone disodium salt; Anthraquinone Blue AP-FW; Acid Blue 80 (related); Disodium 4,4'-[(9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino]bis(methylbenzenesulfonate)
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity for downstream synthesis. Quality is verified through analytical methods including HPLC, UV-Vis, and titration. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance processes.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Solubility	Soluble in water, DMF
Heavy Metals (as Pb)	≤ 20 ppm

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