Description

2,2'-[(9,10-Dihydro-9,10-Dioxo-1,4-Anthracenediyl)Diimino]Bis[5-Methylbenzenesulfonic Acid] is a high-purity, anthraquinone-derived dye intermediate and specialty chemical. This compound is valued for its role as a key precursor in the synthesis of vibrant and stable colorants, particularly acid dyes and reactive dyes. Industrial manufacturers in the textile, leather, and specialty ink sectors rely on this chemical for its consistent performance and purity to ensure final product quality.

Application

• Primary Intermediate for Acid Dyes: Serves as a crucial building block in the manufacture of high-quality acid dyes used for coloring nylon, silk, wool, and leather.
• Synthesis of Reactive Dyes: Used in the production of reactive dyes for cotton and other cellulosic fibers, providing excellent wash-fastness.
• Specialty Ink Formulations: Employed in the creation of specialty inks for security printing, jet inks, and other high-performance applications.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and functional materials.
• Paper Coloring: Can be used in the production of dyes for specialty paper products.
• Biological Staining: Potential application as an intermediate for histological stains and biological markers.

Basic Information

Item	Detail
Product Name	2,2'-[(9,10-Dihydro-9,10-Dioxo-1,4-Anthracenediyl)Diimino]Bis[5-Methylbenzenesulfonic Acid]
CAS No.	3443-90-1
Molecular Formula	C30H22N2O10S2
Molecular Weight	634.63 g/mol
Synonyms	Acid Blue 324; C.I. 61525; 1,4-Bis[(2-methyl-5-sulfophenyl)amino]anthraquinone; 1,4-Bis[(2-methyl-5-sulfophenyl)amino]-9,10-anthracenedione; 1,4-Diaminoanthraquinone-2,2'-dimethyl-5,5'-disulfonic acid; 2,2'-[(9,10-Dihydro-9,10-dioxo-1,4-anthracenediyl)diimino]bis[5-methylbenzenesulfonic acid]; 2,2'-[(9,10-Dioxo-1,4-anthracenediyl)diimino]bis(5-methylbenzenesulfonic acid)
EINECS	222-350-4

Quality Control

Our production of 2,2'-[(9,10-Dihydro-9,10-Dioxo-1,4-Anthracenediyl)Diimino]Bis[5-Methylbenzenesulfonic Acid] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for dye intermediate applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%
Solubility (in water)	Partially soluble, forms a colored solution

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