Description

1-Amino-2-naphthol-6-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, pharmaceutical, and agrochemical sectors seeking reliable, high-purity intermediates for their synthesis workflows.

Application

• Dye and Pigment Intermediate: A key precursor in the manufacture of azo dyes, acid dyes, and other colorants for textiles, leather, and paper.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Agrochemical Production: Employed in the synthesis of certain herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Serves as a versatile reagent for organic synthesis, particularly in reactions requiring a naphthalene-based sulfonate moiety.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic developers and sensitizers.
• Corrosion Inhibitor Formulation: Acts as a component in specialty chemical blends designed to prevent metal corrosion.

Basic Information

Product Name	1-Amino-2-naphthol-6-sulfonic acid
CAS No.	5639-34-9
Molecular Formula	C₁₀H₉NO₄S
Molecular Weight	239.25 g/mol
Synonyms	6-Amino-5-hydroxy-2-naphthalenesulfonic acid; 1,2,6-Aminonaphtholsulfonic acid; 2-Amino-1-naphthol-6-sulfonic acid; 6-Amino-1-naphthol-3-sulfonic acid; Gamma Acid (less common, but associated); 5-Hydroxy-6-amino-2-naphthalenesulfonic acid; 1-Amino-2-hydroxy-6-naphthalenesulfonic acid; ANSA
EINECS	227-088-0

Quality Control

Our 1-Amino-2-naphthol-6-sulfonic acid is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for industrial and research applications. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Due to its light-sensitive and easily oxidized nature, it is recommended to store under an inert atmosphere for long-term preservation. Keep container tightly sealed when not in use to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	Off-white to light gray powder
Identification (IR)	Conforms to structure
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.