Description

5-Amino-1-Naphthol-3-Sulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical intermediate in the synthesis of complex organic molecules. Its unique structure, featuring both amino and sulfonic acid functional groups, makes it a valuable building block for creating dyes, pigments, and specialty chemicals. This compound is essential for manufacturers and R&D laboratories in the fine chemical, dye, and pharmaceutical industries seeking high-purity intermediates for advanced synthesis.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and other complex colorants for textiles, leather, and inks.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Chemical Research & Development: Serves as a versatile starting material or intermediate in organic synthesis for creating novel compounds.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic developers and sensitizers.
• Analytical Reagent: Employed in specific analytical chemistry applications and as a reagent in laboratory settings.
• Corrosion Inhibitor Formulation: Finds application in the development of specialty chemical formulations for metal surface treatment.

Basic Information

Product Name	5-Amino-1-Naphthol-3-Sulfonic Acid
CAS No.	489-78-1
Molecular Formula	C₁₀H₉NO₄S
Molecular Weight	239.25 g/mol
Synonyms	5-Amino-1-naphthol-3-sulfonic acid; 1-Naphthol-5-amino-3-sulfonic acid; 5-Amino-3-hydroxy-1-naphthalenesulfonic acid; 1-Hydroxy-5-amino-3-naphthalenesulfonic acid; 5-Amino-1-hydroxy-3-naphthalenesulfonic acid; 5-Amino-1-naphthol-3-sulphonic acid; 5-Amino-3-hydroxynaphthalene-1-sulfonic acid; 5-Amino-1-naphthol-3-sulfonic acid (principal name)
EINECS	207-694-9

Quality Control

Our 5-Amino-1-Naphthol-3-Sulfonic Acid is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality management system is designed to meet the rigorous demands of industrial and research applications.

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). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed and away from direct light to maintain stability and purity.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (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.