Description

Ammonium Hydrogen 3-Aminonaphthalene-2,7-Disulphonate is a specialized organic salt derived from naphthalene disulfonic acid, serving as a key intermediate in the synthesis of high-value dyes and pigments. This compound matters for its role in producing vibrant, color-fast azo dyes and functional chemicals with specific optical properties. Industries that require it include textile manufacturing, specialty chemical synthesis, and research & development for novel colorants and optical materials.

Application

• Primary Intermediate for Azo Dyes: A crucial building block in the synthesis of acid dyes and direct dyes for textiles, leather, and paper.
• Functional Dye Synthesis: Used in the production of specialized dyes for inks, coatings, and plastics requiring specific light-fastness and solubility.
• Chemical Research & Development: Serves as a starting material for developing novel chromophores and fluorescent markers in analytical chemistry.
• Photographic Chemicals: Potential application in the formulation of certain photographic chemicals and sensitizers.
• Laboratory Reagent: Used as a standard or reagent in analytical and synthetic chemistry laboratories.

Basic Information

Product Name	Ammonium Hydrogen 3-Aminonaphthalene-2,7-Disulphonate
CAS No.	83949-46-6
Molecular Formula	C₁₀H₁₂N₂O₆S₂
Molecular Weight	320.34 g/mol
Synonyms	3-Amino-2,7-naphthalenedisulfonic acid, ammonium hydrogen salt; 2,7-Naphthalenedisulfonic acid, 3-amino-, ammonium hydrogen salt; Ammonium 3-amino-2,7-naphthalenedisulfonate; Acid Yellow 76 intermediate; C.I. 18850 intermediate; 3-Amino-2,7-NDSA ammonium salt
EINECS	Contact for details

Quality Control

Our Ammonium Hydrogen 3-Aminonaphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellowish to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
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.