Description

1-Amino-2-Naphthalenesulfonic Acid is a key aromatic sulfonic acid derivative, serving as a vital intermediate in the synthesis of dyes, pigments, and optical brighteners. Its importance lies in its bifunctional structure, containing both an amino and a sulfonic acid group, which allows for versatile chemical modifications and coupling reactions. This compound is essential for manufacturers in the dye and pigment industry, as well as for research institutions developing specialized organic molecules.

Application

• Primary intermediate for the synthesis of azo dyes and acid dyes.
• Key starting material in the production of pigments for inks, plastics, and textiles.
• Used in the manufacture of optical brighteners (fluorescent whitening agents).
• Important building block for organic synthesis in pharmaceutical research.
• Employed in the preparation of corrosion inhibitors and specialty surfactants.
• Utilized as a reagent in analytical chemistry and biochemical research.

Basic Information

Product Name	1-Amino-2-Naphthalenesulfonic Acid
CAS No.	81-06-1
Molecular Formula	C10H9NO3S
Molecular Weight	223.25 g/mol
Synonyms	2-Amino-1-Naphthalenesulfonic Acid; 1-Naphthylamine-2-sulfonic Acid; 2-Amino-1-Naphthalenesulphonic Acid; 1,2-Cleve's Acid; Tobias Acid; 1-Amino-2-Naphthalenesulphonic Acid; 2-Amino-1-Naphthalenesulfonate
EINECS	201-319-9

Quality Control

Our 1-Amino-2-Naphthalenesulfonic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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). The product is light-sensitive and should be stored away from direct light exposure. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to grayish powder or crystals
Identification (IR)	Conforms
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.