Description

1-Amino-2-Naphthol-4-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in the synthesis of dyes and pigments. Its primary value lies in its ability to form stable, complex structures, making it essential for producing high-performance colorants. This compound is particularly needed by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for creating azo dyes and other functional molecules.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, especially for cotton and textile applications.
• Key building block in the production of hair dye components and other cosmetic colorants.
• Used in the manufacture of biological stains and indicators for laboratory and diagnostic use.
• Intermediate in the synthesis of certain pharmaceutical active ingredients and agrochemicals.
• Employed in research and development for creating novel functional organic compounds.

Basic Information

Product Name	1-Amino-2-Naphthol-4-Sulfonic Acid
CAS No.	116-63-2
Molecular Formula	C10H9NO4S
Molecular Weight	239.25 g/mol
Synonyms	1,2,4-Acid; 4-Amino-3-hydroxy-1-naphthalenesulfonic Acid; 1-Amino-2-hydroxy-4-naphthalenesulfonic Acid; 1,2,4-Acid (Dye Intermediate); 1-Amino-2-naphthol-4-sulphonic acid; 4-Amino-3-hydroxynaphthalene-1-sulfonic acid; 1-Amino-2-hydroxy-naphthalene-4-sulfonic acid; BON Acid
EINECS	204-153-0

Quality Control

Our 1-Amino-2-Naphthol-4-Sulfonic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. Certificates of Analysis (COA) documenting purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to store under an inert atmosphere for long-term stability and to minimize degradation.

Specification

Item	Specification
Appearance	Off-white to grayish 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.