Description

Sodium 1-Amino-9,10-Dihydro-9,10-Dioxo-4-p-Toluidinoanthracene-2-Sulphonate is a high-purity, water-soluble anthraquinone derivative valued for its role as a key intermediate in the synthesis of specialized dyes and pigments. This compound is essential for imparting specific color properties and functional characteristics in advanced material formulations. It is primarily utilized by manufacturers in the dye, textile, and specialty chemical industries seeking consistent quality and reliable supply for their production processes.

Application

• Dye Intermediate: A crucial precursor for the synthesis of high-value anthraquinone-based dyes, particularly for textile and leather applications.
• Functional Pigment Synthesis: Used in the manufacturing of specialized pigments for inks, coatings, and plastics where specific color fastness and stability are required.
• Research & Development: Serves as a building block in organic synthesis for developing novel chromophores and functional materials in academic and industrial R&D labs.
• Analytical Chemistry: Can be employed as a standard or reagent in chromatographic analysis and other quality control procedures within the chemical industry.

Basic Information

Product Name	Sodium 1-Amino-9,10-Dihydro-9,10-Dioxo-4-p-Toluidinoanthracene-2-Sulphonate
CAS No.	25492-69-7
Molecular Formula	C21H15N2NaO5S
Molecular Weight	430.41 g/mol
Synonyms	1-Amino-4-(p-toluidino)anthraquinone-2-sulfonic acid sodium salt; Sodium 1-amino-4-(4-methylanilino)-9,10-dihydro-9,10-dioxoanthracene-2-sulfonate; Acid Blue 25 Sodium Salt (related); C.I. 62055; 1-Amino-4-(p-toluidino)anthraquinone-2-sulphonate; 4-(4-Methylphenyl)amino-1-aminoanthraquinone-2-sulfonic acid sodium salt; Anthraquinone dye intermediate 25492-69-7
EINECS	Contact for details

Quality Control

Our Sodium 1-Amino-9,10-Dihydro-9,10-Dioxo-4-p-Toluidinoanthracene-2-Sulphonate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use as a dye intermediate. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and consistency.

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 after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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