Description

1,1'-(Isopropylidenedi-p-Phenylene) Bis[2-[[5-Amino-3-Methyl-1-(3-Sulphophenyl)-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate], Sodium Salt is a high-purity, water-soluble bis-azo dye intermediate of significant commercial importance. Its core value lies in its ability to impart bright, stable, and wash-fast colors, making it a critical precursor for advanced dye synthesis. This compound is essential for manufacturers in the textile, ink, and specialty polymer industries seeking to produce high-performance colorants.

Application

• Textile Dyeing: Primary application as a key intermediate for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering excellent color fastness.
• Ink Manufacturing: Used in the production of high-quality inks for digital, inkjet, and packaging applications requiring vibrant and stable coloration.
• Leather Coloring: Serves as a precursor for dyes used in the leather tanning and finishing industry.
• Paper Coloring: Employed in the manufacture of dyes for specialty and decorative papers.
• Polymer Staining: Utilized to create colorants for plastics and synthetic fibers to achieve consistent and durable hues.
• Biological Staining: Potential use as an intermediate for histochemical stains and indicators in laboratory settings.

Basic Information

Product Name	1,1'-(Isopropylidenedi-p-Phenylene) Bis[2-[[5-Amino-3-Methyl-1-(3-Sulphophenyl)-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate], Sodium Salt
CAS No.	83006-51-3
Molecular Formula	C46H36N10O10S4•Na2 (or related sodium salt form)
Molecular Weight	Contact for details
Synonyms	Bisazo Dye Intermediate 83006-51-3; Reactive Dye Intermediate; C.I. Reactive Orange; Sodium 1,1'-(isopropylidenedi-p-phenylene)bis[2-[(5-amino-3-methyl-1-(3-sulfophenyl)-1H-pyrazol-4-yl)azo]benzenesulfonate]; 4,4'-(1-Methylethylidene)bis[2-[[5-amino-3-methyl-1-(3-sulfophenyl)-1H-pyrazol-4-yl]azo]benzenesulfonic acid] disodium salt; Azo Dye Precursor 83006-51-3
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to rigorous quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Max. 3.0% total

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