Description

1-Naphthol-4-Sulfonic Acid Sodium Salt is a high-purity organic intermediate and dye precursor essential for specialized chemical synthesis. This compound matters for its role as a key building block in the production of azo dyes, pigments, and functional chemicals, offering reliable reactivity and batch-to-batch consistency. It is primarily needed by manufacturers in the dye and pigment, pharmaceutical, and research & development industries seeking a consistent and high-quality sulfonated naphthol derivative.

Application

• Azo Dye and Pigment Synthesis: Serves as a crucial coupling component in the manufacturing of acid dyes, direct dyes, and organic pigments for textiles, inks, and plastics.
• Pharmaceutical Intermediates: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Acts as a versatile reagent in organic synthesis for creating sulfonated aromatic compounds.
• Photographic Chemicals: Employed in the formulation of specific developers and sensitizers.
• Analytical Reagents: Can be used as a standard or reagent in analytical chemistry applications.

Basic Information

Product Name	1-Naphthol-4-Sulfonic Acid Sodium Salt
CAS No.	6099-57-6
Molecular Formula	C10H7NaO4S
Molecular Weight	246.21 g/mol
Synonyms	1-Naphthol-4-sulfonic acid sodium salt; Sodium 4-hydroxy-1-naphthalenesulfonate; 4-Hydroxy-1-naphthalenesulfonic acid sodium salt; 1,4-Naphtholsulfonic acid sodium salt; NW Acid sodium salt; Neville and Winther's acid sodium salt; Sodium 1-naphthol-4-sulfonate
EINECS	228-062-1

Quality Control

Our 1-Naphthol-4-Sulfonic Acid Sodium Salt is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and composition. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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 sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfate (as SO4)	≤ 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.