Description

6-Amino-1-Naphthalenesulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in the synthesis of complex organic molecules. Its primary value lies in its bifunctional nature, featuring both an amino group and a sulfonic acid group, which makes it an essential building block for dyes, pigments, and optical brighteners. This compound is critically needed by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for producing high-value, color-fast products.

Application

• Primary intermediate for the synthesis of acid dyes, direct dyes, and reactive dyes.
• Key starting material in the production of optical brighteners and fluorescent whitening agents.
• Used in the manufacture of pigments for inks, plastics, and coatings.
• Intermediate in pharmaceutical synthesis for creating active pharmaceutical ingredients (APIs).
• Building block for agrochemicals, including certain herbicides and plant growth regulators.
• Research and development chemical in organic synthesis and material science.
• Potential use in the production of corrosion inhibitors and specialty surfactants.

Basic Information

Product Name	6-Amino-1-Naphthalenesulfonic Acid
CAS No.	81-05-0
Molecular Formula	C10H9NO3S
Molecular Weight	223.25 g/mol
Synonyms	1-Naphthylamine-6-sulfonic Acid; 6-Amino-1-naphthalenesulphonic Acid; 1,6-Cleve's Acid; 6-Amino-1-naphthalene Sulfonic Acid; 6-Amino-1-naphthalenesulfonate; 6-Amino-1-naphthalenesulphonate; 6-Amino-1-naphthalenesulfonic acid (1,6-Cleve's acid); 1-Naphthalenesulfonic acid, 6-amino-
EINECS	201-321-2

Quality Control

Our 6-Amino-1-Naphthalenesulfonic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for industrial and fine chemical synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Off-white to light gray powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.