Description

Disodium 5-(Acetylamino)-4-Hydroxy-3-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate characterized by its complex, multi-functional molecular structure. This compound matters for its role as a critical precursor in synthesizing specialized dyes and pigments, offering excellent color fastness and compatibility with various substrates. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant and durable colorants.

Application

• Textile Dyeing: As a key intermediate for producing reactive and direct dyes for cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the synthesis of pigments for high-performance printing inks, including inks for packaging and textiles.
• Leather Coloring: Serves as a precursor for dyes used in the leather tanning and finishing industry.
• Paper Coloring: Employed in the production of dyes for specialty paper and cardboard products.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo dye chemistry.
• Specialty Coatings: Acts as an intermediate for colorants used in industrial and automotive coatings.

Basic Information

Product Name	Disodium 5-(Acetylamino)-4-Hydroxy-3-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	85455-41-0
Molecular Formula	C25H19N5Na2O10S3
Molecular Weight	723.62 g/mol
Synonyms	Acid Red 337; C.I. 17200; Disodium 5-acetamido-4-hydroxy-3-((2-methyl-5-(phenylaminosulfonyl)phenyl)azo)naphthalene-2,7-disulfonate; 5-(Acetylamino)-4-hydroxy-3-[[2-methyl-5-[(phenylamino)sulfonyl]phenyl]azo]-2,7-naphthalenedisulfonic acid disodium salt; Azo Rubine S; C.I. Acid Red 337; Reactive Red Dye Intermediate; Sulfonated Azo Dye Intermediate
EINECS	Contact for details

Quality Control

Our Disodium 5-(Acetylamino)-4-Hydroxy-3-[[2-Methyl-5-[(Phenylamino)Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) documenting purity, heavy metal content, and other critical parameters are available upon request 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening 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
Water Solubility	Freely soluble

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