Description

1-[(5-Chloro-2-Hydroxy-3-Sulfophenyl)Azo]-2-Hydroxy-3,6-Naphthalenedisulfonic Acid is a high-purity, water-soluble azo dye intermediate known for its excellent chromophoric properties and stability. This compound is critical for synthesizing vivid and durable dyes and pigments, particularly in applications requiring specific shades of red and orange with good light and wash fastness. It is primarily needed by manufacturers in the textile, leather, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Textile Dyeing: A key intermediate for the synthesis of acid dyes and direct dyes used on wool, silk, nylon, and cotton fabrics.
• Leather Coloring: Used in the production of dyes for imparting consistent and vibrant colors to leather goods.
• Ink Manufacturing: Serves as a precursor for pigments in printing inks, including those for packaging and publications.
• Paper Coloring: Employed in the manufacture of dyes for specialty papers and decorative applications.
• Biological Staining: Potential use as an intermediate for histochemical stains and indicators in laboratory settings.
• Research & Development: Used as a standard or building block in chemical research for developing new functional dyes and sensors.

Basic Information

Product Name	1-[(5-Chloro-2-Hydroxy-3-Sulfophenyl)Azo]-2-Hydroxy-3,6-Naphthalenedisulfonic Acid
CAS No.	2103-74-4
Molecular Formula	C₁₆H₉ClN₂O₁₀S₃
Molecular Weight	544.89 g/mol
Synonyms	Acid Red 114; C.I. 23635; 5-Chloro-2-hydroxy-3-[(2-hydroxy-3,6-disulfo-1-naphthalenyl)azo]benzenesulfonic acid; 1-[(5-Chloro-2-hydroxy-3-sulfophenyl)azo]-2-naphthol-3,6-disulfonic acid; Naphthalenedisulfonic acid, 1-[(5-chloro-2-hydroxy-3-sulfophenyl)azo]-2-hydroxy-; C.I. Acid Red 114; Benzenesulfonic acid, 5-chloro-2-hydroxy-3-((2-hydroxy-3,6-disulfo-1-naphthyl)azo)-
EINECS	218-260-9

Quality Control

Our production of 1-[(5-Chloro-2-Hydroxy-3-Sulfophenyl)Azo]-2-Hydroxy-3,6-Naphthalenedisulfonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided and 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 after each use to prevent absorption of atmospheric moisture, which can affect product quality.

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	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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