Description

8-Amino-1-naphthol-3,6-disulfonic acid disodium salt is a high-purity, water-soluble aromatic intermediate of significant industrial importance. Its value lies in its bifunctional structure, featuring both an amino and a phenolic hydroxyl group, which makes it a versatile precursor for the synthesis of complex dyes and pigments. This compound is primarily needed by manufacturers in the dye and pigment industry, as well as by research institutions developing advanced organic materials and analytical reagents.

Application

• Primary Intermediate for Azo Dyes and Pigments: Serves as a key coupling component for producing acid dyes, direct dyes, and reactive dyes, imparting color and specific properties to textiles, leather, and paper.
• Synthesis of Food Colorants: Used in the manufacturing chain for certain certified food dyes, where high purity and consistent quality are paramount.
• Production of Lake Pigments: Acts as a starting material for insoluble pigment lakes used in printing inks, coatings, and plastics.
• Chemical Reagent and Research Chemical: Employed in organic synthesis laboratories for constructing naphthalene-based compounds and in analytical chemistry.
• Photographic Chemicals: Can be utilized in the synthesis of certain photographic developers and sensitizers.
• Specialty Chemical Synthesis: Functions as a building block for more complex sulfonated aromatic compounds used in various niche industrial applications.

Basic Information

Item	Detail
Product Name	8-Amino-1-naphthol-3,6-disulfonic Acid Disodium Salt
CAS No.	3963-80-2
Molecular Formula	C10H7NNa2O7S2
Molecular Weight	363.27 g/mol
Synonyms	H Acid Disodium Salt; 8-Amino-1-naphthol-3,6-disulfonic acid sodium salt; 1-Amino-8-hydroxynaphthalene-3,6-disulfonic acid disodium salt; 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt; H Acid Sodium Salt; Acid H Disodium Salt; 8-Amino-1-naphthol-3,6-disulfonate disodium; 1,8-Naphthosultam derivative
EINECS	223-567-1

Quality Control

Our 8-Amino-1-naphthol-3,6-disulfonic acid disodium salt is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Grayish to brown powder or crystals
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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