Description

3-Amino-1,5-Naphthalenedisulfonic Acid Monosodium Salt is a high-purity, functionalized naphthalene derivative serving as a critical intermediate in advanced organic synthesis. Its value lies in the unique combination of an amino group and two sulfonic acid moieties, which facilitates its use in creating dyes, pigments, and specialty chemicals with enhanced solubility and reactivity. This compound is essential for manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries seeking reliable, high-quality building blocks for complex molecular architectures.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles like wool, silk, and nylon.
• Pharmaceutical Synthesis: Used as a building block in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Manufacturing: Serves as an intermediate in the synthesis of specialized pesticides and herbicides.
• Chemical Research & Development: Employed in R&D laboratories for developing new functional materials and organic compounds.
• Optical Brightener Production: Used in the manufacture of fluorescent whitening agents for paper and detergents.
• Corrosion Inhibitor Formulation: A component in certain industrial corrosion inhibitor blends.

Basic Information

Item	Details
Product Name	3-Amino-1,5-Naphthalenedisulfonic Acid Monosodium Salt
CAS No.	4681-22-5
Molecular Formula	C10H8NNaO6S2
Molecular Weight	325.29 g/mol
Synonyms	1,5-Naphthalenedisulfonic acid, 3-amino-, monosodium salt; Sodium 3-amino-1,5-naphthalenedisulfonate; 3-Amino-1,5-NDSA monosodium salt; Acid Yellow 7 intermediate; Azoic diazo component 36; Naphthalene-1,5-disulfonic acid, 3-amino-, sodium salt; 1,3,5-Naphthalenetrisulfonic acid, 8-amino- derivative
EINECS	225-142-6

Quality Control

Every batch of 3-Amino-1,5-Naphthalenedisulfonic Acid Monosodium Salt is produced under a strict quality management system. We provide comprehensive Certificates of Analysis (COA) that detail purity, identity, and impurity profiles, ensuring traceability and compliance with your specifications. Our rigorous testing protocols, including HPLC and titration methods, guarantee consistent quality and reliability for your industrial processes.

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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Sulfate Ash	≤ 0.5%

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