Description

6-Chloro-1-Amino-2-Naphthol-4-Sulfonic Acid is a specialized naphthalene-based intermediate featuring a unique combination of sulfonic acid, amino, and chloro functional groups. This compound matters as a versatile building block for synthesizing complex dyes, pigments, and functional organic molecules. Industries such as dye and pigment manufacturing, pharmaceutical research, and specialty chemical production need this high-purity intermediate for developing products with specific coloristic and chemical properties.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and metal-complex pigments, particularly for shades of black, blue, and brown.
• Pharmaceutical Synthesis: Serves as a building block for active pharmaceutical ingredients (APIs) and diagnostic agents due to its reactive functional groups.
• Chemical Research & Development: Used in organic synthesis for creating novel sulfonated compounds and heterocyclic structures.
• Textile Auxiliaries: Employed in the production of dye-fixing agents and other functional chemicals for the textile industry.
• Photographic Chemicals: Can be utilized in the synthesis of certain photographic developers and color couplers.
• Analytical Reagents: Potential use as a reagent or standard in analytical chemistry for method development.

Basic Information

Product Name	6-Chloro-1-Amino-2-Naphthol-4-Sulfonic Acid
CAS No.	6357-86-4
Molecular Formula	C10H8ClNO4S
Molecular Weight	273.69 g/mol
Synonyms	6-Chloro-1-amino-2-naphthol-4-sulfonic acid; 1-Amino-6-chloro-2-naphthol-4-sulfonic acid; 4-Amino-5-chloro-1-naphthol-2-sulfonic acid; C.I. 37120; 6-Chloro-1,2,4-aminonaphtholsulfonic acid; 2-Naphthol-4-sulfonic acid, 1-amino-6-chloro-; 6-Chloro-1-amino-2-hydroxy-4-naphthalenesulfonic acid
EINECS	228-770-6

Quality Control

Our 6-Chloro-1-Amino-2-Naphthol-4-Sulfonic Acid is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and easily oxidized nature, the container must be kept tightly sealed after opening to minimize exposure to moisture and air. For long-term storage, consider using an inert atmosphere.

Specification

Item	Specification
Appearance	Off-white to light gray powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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