Description

8-(2,5-Dimethyl-4-Chlorophenylsulfonamido)-1-Naphthol-3,6-Disulfonic Acid is a high-purity, multi-sulfonated naphthol derivative that serves as a critical intermediate in the synthesis of specialized dyes and pigments. Its complex molecular structure provides excellent chromophoric properties and binding affinity, making it a valuable building block for creating vivid and stable colorants. This compound is primarily sought by manufacturers in the fine chemical, dye, and specialty materials industries for research and production-scale applications.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of acid dyes, reactive dyes, and high-performance pigments, particularly for textiles, inks, and coatings.
• Chemical Research & Development: Used as a specialized building block in organic synthesis for developing novel chromophores and functional materials.
• Analytical Reagent: Potential use as a complexing agent or indicator in specific analytical chemistry applications due to its sulfonic acid groups.
• Specialty Surfactant Synthesis: Can be utilized to create anionic surfactants with unique properties for niche industrial formulations.
• Photographic Chemicals: May serve as a component in the manufacture of certain light-sensitive chemicals or color couplers.
• Liquid Crystal and OLED Materials: Investigated as a potential intermediate for electronic chemicals used in display technologies.

Basic Information

Product Name	8-(2,5-Dimethyl-4-Chlorophenylsulfonamido)-1-Naphthol-3,6-Disulfonic Acid
CAS No.	6361-35-9
Molecular Formula	C18H16ClNO7S3
Molecular Weight	513.97 g/mol
Synonyms	1-Naphthol-3,6-disulfonic acid, 8-[(2,5-dimethyl-4-chlorophenyl)sulfonyl]amino]-; 8-[(2,5-Dimethyl-4-chlorophenyl)sulfonyl]amino]-1-naphthol-3,6-disulfonic acid; 8-(2,5-Dimethyl-4-chlorobenzenesulfonamido)-1-naphthol-3,6-disulfonic acid; C.I. 56005; Acid Yellow 40 intermediate; 8-Amino-1-naphthol-3,6-disulfonic acid N-(2,5-dimethyl-4-chlorophenyl)sulfonyl derivative
EINECS	228-874-9

Quality Control

Our production of 8-(2,5-Dimethyl-4-Chlorophenylsulfonamido)-1-Naphthol-3,6-Disulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet exacting customer specifications. Certificates of Analysis (COA) documenting identity, purity, and related substances are provided with every shipment.

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). Keep away from strong oxidizing agents and strong bases. Due to the presence of sulfonic acid groups, the material may be hygroscopic; protect from excessive moisture to prevent caking or degradation.

Specification

Item	Specification
Appearance	Light yellow to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility	Soluble in alkaline aqueous solutions

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