Description

2-Amino-1,5-Naphthalenedisulfonic Acid is a high-purity, versatile aromatic sulfonic acid derivative essential for advanced organic synthesis. Its bifunctional nature, featuring both an amino and two sulfonic acid groups, makes it a critical intermediate for creating complex, value-added compounds. This product is primarily required by manufacturers in the dye, pigment, and pharmaceutical industries for producing vibrant colors and active pharmaceutical ingredients (APIs).

Application

• Key intermediate in the synthesis of acid dyes and reactive dyes for textiles, leather, and paper.
• Precursor for manufacturing high-performance pigments and optical brightening agents.
• Building block in pharmaceutical synthesis for creating sulfonamide-based drugs and other active ingredients.
• Used in the production of fluorescent whitening agents and other specialty chemicals.
• Intermediate for research and development in organic chemistry and material science.
• Potential use in the synthesis of corrosion inhibitors and other functional additives.

Basic Information

Product Name	2-Amino-1,5-Naphthalenedisulfonic Acid
CAS No.	117-62-4
Molecular Formula	C₁₀H₉NO₆S₂
Molecular Weight	303.31 g/mol
Synonyms	1,5-Naphthalenedisulfonic acid, 2-amino-; 2-Amino-1,5-naphthalenedisulfonic acid; 1,5-ANS; 2-Amino-1,5-NDSA; 2-Amino-1,5-dihydroxynaphthalene-1,5-disulfonic acid; 2-Aminonaphthalene-1,5-disulfonic acid; 1,5-Dihydroxynaphthalene-2-amino-1,5-disulfonic acid; 5-Amino-1,3-naphthalenedisulfonic acid
EINECS	204-203-4

Quality Control

Our 2-Amino-1,5-Naphthalenedisulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry specifications. A detailed Certificate of Analysis (COA) is provided with each shipment to guarantee traceability and consistent quality for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
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.