Description

Disodium 3-[[4-[(4-Amino-1-Naphthyl)Azo]-2,5-Dimethylphenyl]Azo]Naphthalene-1,5-Disulphonate is a high-purity, synthetic azo dye intermediate known for its distinct chromophoric properties. This compound is critical for producing vivid and stable colorants, particularly in applications requiring high lightfastness and chemical resistance. It is primarily utilized by manufacturers in the textile, ink, and specialty polymer industries for coloring fibers, plastics, and coatings.

Application

• Textile Dyeing: A key intermediate for synthesizing high-performance dyes for nylon, silk, and wool fibers.
• Ink Formulation: Used in the production of pigments for industrial inks, including those for packaging and printing.
• Plastic and Polymer Coloring: Imparts color to engineering plastics and synthetic polymers where thermal stability is required.
• Liquid Crystal Display (LCD) Color Filters: Serves as a precision colorant in the manufacture of electronic display components.
• Biological Staining: Potential use as a histological stain in laboratory research and diagnostics.
• Analytical Chemistry: Can be employed as a chromogenic reagent or indicator in specific analytical methods.

Basic Information

Item	Detail
Product Name	Disodium 3-[[4-[(4-Amino-1-Naphthyl)Azo]-2,5-Dimethylphenyl]Azo]Naphthalene-1,5-Disulphonate
CAS No.	93805-43-7
Molecular Formula	C28H22N6Na2O6S2
Molecular Weight	648.61 g/mol
Synonyms	Acid Red 337; C.I. 17210; Disodium 3-[[4-[(4-amino-1-naphthyl)azo]-2,5-dimethylphenyl]azo]naphthalene-1,5-disulfonate; 1,5-Naphthalenedisulfonic acid, 3-[[4-[(4-amino-1-naphthalenyl)azo]-2,5-dimethylphenyl]azo]-, disodium salt; Azo dye intermediate 93805-43-7; 2-Naphthalenesulfonic acid, 6-[[4-[(4-amino-1-naphthyl)azo]-2,5-dimethylphenyl]azo]-1,5-disulfo-, disodium salt
EINECS	Contact for details

Quality Control

Our production of Disodium 3-[[4-[(4-Amino-1-Naphthyl)Azo]-2,5-Dimethylphenyl]Azo]Naphthalene-1,5-Disulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing all specifications are provided with each shipment.

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 nature, the container must be kept sealed to minimize exposure to atmospheric moisture. Keep away from 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	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, complete solution

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