Description

3-[[3-Methoxy-4-[(Methylsulphonyl)Amino]Phenyl]Azo]Naphthalene-1,5-Disulphonic Acid CAS NO 68834-08-2 is a high-purity, synthetic azo dye intermediate characterized by its disulfonic acid groups and methoxy-substituted phenylazo structure. This compound is essential for producing vivid and stable colorants, particularly in applications requiring excellent lightfastness and solubility in aqueous systems. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries for synthesizing advanced dyes and pigments.

Application

• Textile Dye Synthesis: A key intermediate for manufacturing acid dyes and reactive dyes used on nylon, wool, and silk fibers.
• Inkjet Ink Formulation: Used in the production of high-performance colorants for industrial and commercial inkjet printing.
• Paper Coloring: Employed in the synthesis of dyes for specialty paper and packaging materials.
• Leather Dyeing: Serves as a precursor for dyes applied in the leather tanning and finishing industry.
• Biological Staining: Potential use as an intermediate for histochemical stains and indicators in laboratory settings.
• Functional Dye Production: A building block for creating dyes with specific properties for optical data storage or liquid crystal displays (LCDs).

Basic Information

Product Name	3-[[3-Methoxy-4-[(Methylsulphonyl)Amino]Phenyl]Azo]Naphthalene-1,5-Disulphonic Acid
CAS No.	68834-08-2
Molecular Formula	C18H16N4O8S3
Molecular Weight	512.53 g/mol
Synonyms	Acid Red 337; C.I. 17210; 1,5-Naphthalenedisulfonic acid, 3-[[3-methoxy-4-[(methylsulfonyl)amino]phenyl]azo]-; 3-[[3-Methoxy-4-[(methylsulfonyl)amino]phenyl]azo]-1,5-naphthalenedisulfonic acid; 3-[(3-Methoxy-4-{[(methylsulfonyl)amino]})azo]-1,5-naphthalenedisulfonic acid; Naphthalene-1,5-disulfonic acid, 3-[(3-methoxy-4-[(methylsulfonyl)amino])azo]-; 68834-08-2 (CAS); Mordant dye intermediate
EINECS	Contact for details

Quality Control

Our production of 3-[[3-Methoxy-4-[(Methylsulphonyl)Amino]Phenyl]Azo]Naphthalene-1,5-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and specification compliance. Certificates of Analysis (COA) detailing all critical parameters are provided with each shipment to guarantee traceability and 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 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. Keep away from strong acids and incompatible materials.

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	≤ 1.0%
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.