Description

2,7-Naphthalenedisulfonic Acid, 4-4-6-4-(Benzoylamino)Phenylamino-1-Hydroxy-3-Sulfo-2-Naphthalenylazo-5-Methoxy-2-Methylphenylazo-5-Hydroxy-, Lithium Sodium Salt is a high-purity, complex azo dye intermediate with significant commercial value. This compound is engineered to deliver exceptional color strength and stability, making it a critical component for producing high-performance dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries who require reliable, consistent raw materials for their formulations.

Application

This advanced chemical intermediate is designed for specialized applications where color performance and chemical stability are paramount.

• Primary use as a key intermediate in the synthesis of high-grade, reactive dyes for textile fibers, particularly cotton and nylon.
• Manufacture of specialty pigments for inks used in packaging, security printing, and digital applications.
• Production of colorants for industrial coatings, including those for plastics and automotive finishes, requiring lightfastness and weather resistance.
• Potential use in the formulation of functional dyes for non-textile applications such as lasers, optical data storage, and biomedical staining.
• Research and development of novel chromogenic materials in academic and industrial laboratories.

Basic Information

Item	Details
Product Name	2,7-Naphthalenedisulfonic Acid, 4-4-6-4-(Benzoylamino)Phenylamino-1-Hydroxy-3-Sulfo-2-Naphthalenylazo-5-Methoxy-2-Methylphenylazo-5-Hydroxy-, Lithium Sodium Salt
CAS No.	146206-05-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Red 238; Lithium sodium salt of a complex naphthalenedisulfonic acid azo dye; Reactive Red 238; 4-[[4-[[6-[4-(Benzoylamino)phenyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-5-methoxy-2-methylphenyl]azo]-5-hydroxy-2,7-naphthalenedisulfonic acid lithium sodium salt; Benzenesulfonic acid, 2,7-naphthalenedisulfonic acid derivative; Azo dye intermediate for Reactive Red 238; Textile dye intermediate RR 238.
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to a strict quality management system. Every batch is analyzed using advanced techniques like HPLC to ensure consistent purity and performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and color strength. Our quality commitment ensures the material meets the stringent requirements of global industrial dye and pigment manufacturers.

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 sealed to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture (KF)	Max. 5.0%
Solubility	Soluble in water
Heavy Metals	Contact for details

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