Description

Disodium 5-Chloro-2-[4-Chloro-1-(Sulphonatooxy)-2-Naphthyl]-7-Methoxy-4-Methyl-1H-Indol-3-Yl Sulphate is a high-purity, water-soluble chemical intermediate of significant commercial importance. Its value lies in its role as a key precursor for the synthesis of specialized dyes and functional pigments, offering excellent batch-to-batch consistency for downstream manufacturing. This product is essential for industrial-scale producers in the dye and pigment, specialty chemical, and advanced material sectors who require reliable, high-quality raw materials.

Application

• Primary Intermediate for Reactive Dyes: A crucial building block in the synthesis of high-performance reactive dyes for textiles, particularly cotton and cellulose fibers.
• 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 key starting material in R&D laboratories for developing novel chromophores and photoactive compounds.
• Specialty Chemical Production: Employed in the synthesis of complex organic molecules for niche applications in material science.
• Analytical Reference Standard: Supplied as a certified reference material for quality control and analytical method development in chemical manufacturing.

Basic Information

Product Name	Disodium 5-Chloro-2-[4-Chloro-1-(Sulphonatooxy)-2-Naphthyl]-7-Methoxy-4-Methyl-1H-Indol-3-Yl Sulphate
CAS No.	4086-05-9
Molecular Formula	C20H13Cl2NNa2O9S2
Molecular Weight	584.30 g/mol
Synonyms	Disodium 5-Chloro-2-(4-chloro-1-hydroxy-2-naphthylazo)-7-methoxy-4-methyl-1H-indol-3-yl Sulfate; C.I. Reactive Red 238; Reactive Red 238; Disodium 5-chloro-2-[(4-chloro-1-hydroxy-2-naphthyl)azo]-7-methoxy-4-methyl-1H-indol-3-yl sulfate; 5-Chloro-2-[(4-chloro-1-hydroxy-2-naphthyl)azo]-7-methoxy-4-methyl-1H-indol-3-yl sulfate disodium salt
EINECS	Contact for details

Quality Control

Our production of Disodium 5-Chloro-2-[4-Chloro-1-(Sulphonatooxy)-2-Naphthyl]-7-Methoxy-4-Methyl-1H-Indol-3-Yl Sulphate 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 use as a dye intermediate. Certificates of Analysis (COA) detailing all critical parameters are provided with each shipment to guarantee traceability and compliance with your internal quality standards.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution at 1%

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