Description

3-Amino-8-Hydroxynaphthalene-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 dyes and pigments. This compound is valued for its ability to introduce specific chromophoric and auxochromic groups, enabling the production of vibrant and stable colors. It is an essential raw material for manufacturers in the dye, textile, and specialty chemical industries seeking reliable quality and consistent performance in their formulations.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial diazo component in the manufacture of acid, direct, and reactive dyes, particularly for textiles like wool, silk, and nylon.
• Pigment Synthesis: Used in the production of high-performance organic pigments for inks, plastics, and coatings, offering excellent color strength and lightfastness.
• Specialty Chemical Manufacturing: Acts as a building block for creating complex chemical structures used in research and advanced material science.
• Laboratory Reagent: Employed in analytical chemistry and research laboratories as a standard or reagent for method development and synthesis studies.

Basic Information

Product Name	3-Amino-8-Hydroxynaphthalene-1,5-Disulphonic Acid, Sodium Salt
CAS No.	94349-54-9
Molecular Formula	C₁₀H₇NNa₂O₇S₂
Molecular Weight	379.27 g/mol
Synonyms	3-Amino-8-hydroxynaphthalene-1,5-disulfonic acid disodium salt; 8-Hydroxy-1,5-naphthalenedisulfonic acid, 3-amino-, disodium salt; 1,5-Naphthalenedisulfonic acid, 3-amino-8-hydroxy-, disodium salt; H Acid derivative; Amino H Acid sodium salt; 3-Amino-8-naphthol-1,5-disulfonic acid disodium salt; 3-Amino-8-hydroxy-1,5-naphthalenedisulfonate disodium
EINECS	Contact for details

Quality Control

Our 3-Amino-8-Hydroxynaphthalene-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 dye intermediate applications. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and compliance.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after initial use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Light brown to gray powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals	< 20 ppm

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