Description

2-Naphthol-8-Sulfonic Acid Potassium Salt is a key organic intermediate and water-soluble salt derivative of a naphthalenesulfonic acid. This compound matters for its role as a versatile building block in the synthesis of dyes, pigments, and specialty chemicals, offering consistent reactivity and purity. It is primarily needed by manufacturers in the dyestuff, textile, and fine chemical industries, where it serves as a crucial precursor for azo coupling reactions and the production of lake pigments.

Application

• Primary intermediate in the manufacture of azo dyes and pigments for textiles, inks, and plastics.
• Coupling agent in the synthesis of food, drug, and cosmetic (FD&C) colorants where a potassium salt offers advantageous solubility.
• Key precursor for producing lake pigments, used to impart color in various industrial applications.
• Building block in organic synthesis for pharmaceuticals and agrochemicals.
• Used in research and development laboratories for chemical process development.
• Potential component in the formulation of specialty surfactants or corrosion inhibitors.

Basic Information

Product Name	2-Naphthol-8-Sulfonic Acid Potassium Salt
CAS No.	30252-40-5
Molecular Formula	C₁₀H₇KO₄S
Molecular Weight	262.32 g/mol
Synonyms	Potassium 8-Hydroxy-2-naphthalenesulfonate; 8-Hydroxy-2-naphthalenesulfonic Acid Potassium Salt; 2-Hydroxy-8-naphthalenesulfonic Acid Potassium Salt; 2-Naphthol-8-sulfonic Acid K Salt; 8-Hydroxynaphthalene-2-sulfonic Acid Potassium Salt; 2-Naphthol-8-sulfonate Potassium; 8-Hydroxy-2-naphthalenesulfonate Potassium Salt
EINECS	Contact for details

Quality Control

Our 2-Naphthol-8-Sulfonic Acid Potassium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) documenting these results are provided to guarantee supply reliability and batch-to-batch consistency for your critical 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 to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

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

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