Description

3-Amino-7-Nitronaphthalene-1,5-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble naphthalene derivative primarily used as a key intermediate in the synthesis of advanced colorants. This compound matters for its role in producing vibrant and stable dyes and pigments, offering excellent chromophoric properties. It is essential for manufacturers in the dyestuff, textile, and specialty chemical industries seeking reliable intermediates for high-performance color applications.

Application

• Primary Intermediate for Dyes and Pigments: A crucial building block in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles like wool, silk, and nylon.
• Specialty Colorant Production: Used in the manufacture of high-value, complex organic pigments for inks, coatings, and plastics that require specific color fastness and stability.
• Research & Development: Serves as a key starting material in chemical R&D for developing novel chromophores and functional dyes with specialized optical properties.
• Analytical Reagents: Can be utilized in the formulation of specific chemical indicators and reagents for analytical chemistry applications.

Basic Information

Product Name	3-Amino-7-Nitronaphthalene-1,5-Disulphonic Acid, Sodium Salt
CAS No.	83949-47-7
Molecular Formula	C₁₀H₇N₂Na₂O₈S₂
Molecular Weight	417.28 g/mol
Synonyms	3-Amino-7-nitronaphthalene-1,5-disulfonic acid disodium salt; 1,5-Naphthalenedisulfonic acid, 3-amino-7-nitro-, sodium salt (1:2); 3-Amino-7-nitro-1,5-naphthalenedisulfonic acid disodium salt; Naphthalene-1,5-disulfonic acid, 3-amino-7-nitro-, disodium salt; 83949-47-7; Disodium 3-amino-7-nitronaphthalene-1,5-disulfonate
EINECS	Contact for details

Quality Control

Our 3-Amino-7-Nitronaphthalene-1,5-Disulphonic Acid, Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive synthesis processes. A Certificate of Analysis (COA) detailing all quality parameters is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder or crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Solubility	Freely soluble in water
Heavy Metals (as Pb)	≤ 20 ppm

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