Description

6-[(3-Chloro-2-Hydroxy-5-Nitrophenyl)Azo]-5-Hydroxynaphthalene-1-Sulphonic Acid is a specialized azo dye intermediate known for its complex molecular structure, which imparts specific chromophoric properties. This compound is valued for its role in synthesizing high-performance dyes and pigments with excellent color fastness and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vivid and durable colorants.

Application

• Textile Dye Intermediate: A key precursor for synthesizing azo dyes used in coloring natural and synthetic fibers, particularly for shades of orange, red, and brown.
• Pigment Manufacturing: Used in the production of organic pigments for inks, paints, and plastics, where lightfastness and thermal stability are critical.
• Leather Dyeing: Employed in the formulation of dyes for leather finishing, providing deep, penetrating colors.
• Paper Coloring: Serves as a colorant intermediate in specialty paper and packaging applications.
• Research & Development: Used in chemical research as a model compound for studying azo dye chemistry, photochemistry, and complexation behavior.
• Analytical Reagent: Potential use as a metallochromic indicator or a complexing agent in analytical chemistry due to its hydroxyl and azo groups.

Basic Information

Product Name	6-[(3-Chloro-2-Hydroxy-5-Nitrophenyl)Azo]-5-Hydroxynaphthalene-1-Sulphonic Acid
CAS No.	83784-14-9
Molecular Formula	C16H9ClN3O7S
Molecular Weight	422.78 g/mol
Synonyms	5-Hydroxy-6-[(3-chloro-2-hydroxy-5-nitrophenyl)azo]-1-naphthalenesulfonic acid; C.I. 18745; 6-[(3-Chloro-2-hydroxy-5-nitrophenyl)azo]-5-hydroxy-1-naphthalenesulfonic acid; 1-Naphthalenesulfonic acid, 5-hydroxy-6-[(3-chloro-2-hydroxy-5-nitrophenyl)azo]-; Azo dye intermediate 83784-14-9; 3-Chloro-2-hydroxy-5-nitrophenyl azo hydroxynaphthalene sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 6-[(3-Chloro-2-Hydroxy-5-Nitrophenyl)Azo]-5-Hydroxynaphthalene-1-Sulphonic Acid adheres to stringent quality protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and specification compliance. Certificates of Analysis (COA) detailing all relevant parameters are available upon request 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 quality and handling properties.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in alkaline water; sparingly soluble in neutral water

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