Description

1-Hydroxynaphthalene-8-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in the synthesis of dyes, pigments, and specialty chemicals. Its molecular structure, featuring both hydroxyl and sulfonic acid groups, makes it a critical building block for creating compounds with specific color and functional properties. This product is essential for manufacturers in the dye, textile, and fine chemical industries seeking reliable and high-purity intermediates for their production processes.

Application

• Dye and Pigment Intermediate: A primary precursor in the synthesis of azo dyes, acid dyes, and other colorants for textiles, leather, and paper.
• Chemical Synthesis: Used as a key building block in organic synthesis for pharmaceuticals and agrochemicals.
• Corrosion Inhibitor Formulation: Employed in the production of specialty chemicals for metal treatment and protection.
• Analytical Reagent: Functions as a reagent or standard in certain chemical analysis and research applications.
• Photographic Chemical: Used in the manufacture of certain photographic chemicals and developers.

Basic Information

Product Name	1-Hydroxynaphthalene-8-Sulfonic Acid
CAS No.	117-22-6
Molecular Formula	C₁₀H₈O₄S
Molecular Weight	224.23 g/mol
Synonyms	8-Hydroxy-1-naphthalenesulfonic Acid; Peri Acid; 8-Hydroxynaphthalene-1-sulfonic Acid; 1-Naphthol-8-sulfonic Acid; 8-Hydroxy-1-naphthalenesulphonic Acid; 1,8-Naphtholsulfonic Acid; NSC 4034
EINECS	204-179-6

Quality Control

Our 1-Hydroxynaphthalene-8-Sulfonic Acid is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous internal specifications, which typically include assay, identification, and impurity profile analysis. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

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). Keep away from strong oxidizing agents, strong bases, and incompatible materials. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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