Description

6-Hydroxy-1-Naphthalenesulfonic Acid is a versatile naphthalene derivative that serves as a key intermediate in the synthesis of dyes, pigments, and other fine chemicals. Its bifunctional structure, containing both a sulfonic acid and a phenolic hydroxyl group, makes it a valuable building block for creating compounds with specific solubility and chromophoric properties. This product is essential for manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries seeking reliable, high-purity intermediates for their synthesis processes.

Application

• Dye and Pigment Intermediate: A crucial precursor in the manufacture of azo dyes, acid dyes, and lake pigments, contributing to color strength and water solubility.
• Pharmaceutical Synthesis: Used as a building block in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Formulations: Acts as an intermediate in the synthesis of specific herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Employed in organic synthesis laboratories for developing new sulfonated compounds and functional materials.
• Corrosion Inhibitor Component: Can be utilized in formulations for metal treatment and protection due to its sulfonic acid group.
• Photographic Chemicals: Finds application in the synthesis of certain chemicals used in photographic development processes.

Basic Information

Product Name	6-Hydroxy-1-Naphthalenesulfonic Acid
CAS No.	20386-27-0
Molecular Formula	C₁₀H₈O₄S
Molecular Weight	224.23 g/mol
Synonyms	1-Naphthalenesulfonic acid, 6-hydroxy-; 6-Hydroxynaphthalene-1-sulfonic acid; 1,6-Naphthalenesulfonic acid; 6-Naphthol-1-sulfonic acid; 1-Sulfo-6-hydroxynaphthalene; 6-Hydroxy-1-naphthalene sulfonic acid; NSC 403119; 6-HNSA
EINECS	243-779-5

Quality Control

Our 6-Hydroxy-1-Naphthalenesulfonic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. Certificates of Analysis (COA) detailing results from tests such as HPLC assay, related substances, and residual solvents are provided to guarantee consistent quality and traceability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases, strong oxidizing agents, and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light tan crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%
Heavy Metals	≤ 20 ppm

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