Description

Potassium Hydrogen 3-Hydroxy-4-[(4-Methyl-2-Sulphonatophenyl)Azo]-2-Naphthoate is a high-purity azo dye intermediate and chemical reagent. This compound is valued for its precise molecular structure, which is critical for producing consistent and vibrant colorants. It is primarily required by manufacturers in the dye and pigment, specialty chemical, and advanced material synthesis industries for high-performance applications.

Application

• Key intermediate in the synthesis of high-value azo dyes and pigments.
• Precursor for colorants used in textile, ink, and specialty coating formulations.
• Research and development chemical for novel photonic or electronic materials.
• Standard or reference material in analytical chemistry and quality control laboratories.
• Potential use in the development of sensors or indicators due to its chromophoric properties.
• Starting material for custom synthesis in fine chemical and pharmaceutical research.

Basic Information

Product Name	Potassium Hydrogen 3-Hydroxy-4-[(4-Methyl-2-Sulphonatophenyl)Azo]-2-Naphthoate
CAS No.	93923-95-6
Molecular Formula	C18H12KN2O6S
Molecular Weight	423.47 g/mol
Synonyms	Potassium 3-Hydroxy-4-[(4-methyl-2-sulfophenyl)azo]-2-naphthoate; C.I. Pigment Red 57:1 (Potassium Salt variant); 3-Hydroxy-4-((4-methyl-2-sulfonatophenyl)azo)-2-naphthoic Acid Potassium Salt; Potassium 4-[(4-Methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoate; Azo dye intermediate K salt; Naphthol AS derivative potassium salt; 93923-95-6; 4-[(4-Methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic Acid Monopotassium Salt
EINECS	Contact for details

Quality Control

Our Potassium Hydrogen 3-Hydroxy-4-[(4-Methyl-2-Sulphonatophenyl)Azo]-2-Naphthoate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet the high standards required for industrial and research applications. Certificates of Analysis (COA) documenting key specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed to minimize exposure to atmospheric moisture and light to maintain product integrity.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Contact for details
Related Substances (HPLC)	Contact for details

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