Description

Dipotassium 5-Amino-4-Hydroxybenzene-1,3-Disulphonate is a high-purity, water-soluble aromatic sulfonate salt primarily used as a key intermediate in the synthesis of dyes and pigments. Its value lies in its role as a versatile building block for creating azo dyes, optical brighteners, and other functional colorants. This compound is essential for manufacturers in the dyestuff, textile, paper, and specialty chemical industries seeking reliable and consistent raw materials for their production processes.

Application

• Azo Dye Intermediate: A critical precursor for the synthesis of a wide range of acid, direct, and reactive azo dyes used in textiles and leather.
• Optical Brightener Production: Serves as a key starting material in the manufacture of stilbene-based optical brightening agents (OBAs) for paper, detergents, and plastics.
• Pharmaceutical Intermediate: Used in the synthesis of certain sulfonated pharmaceutical compounds and diagnostic agents.
• Specialty Chemical Synthesis: Employed as a building block for creating sulfonated polymers, liquid crystals, and other advanced materials.
• Research & Development: Utilized in chemical research for developing new chromophores and functional molecules.

Basic Information

Product Name	Dipotassium 5-Amino-4-Hydroxybenzene-1,3-Disulphonate
CAS No.	79817-61-1
Molecular Formula	C6H5K2NO8S2
Molecular Weight	353.34 g/mol
Synonyms	5-Amino-4-hydroxy-1,3-benzenedisulfonic acid dipotassium salt; 1,3-Benzenedisulfonic acid, 5-amino-4-hydroxy-, dipotassium salt; Dipotassium 3-amino-6-hydroxybenzene-1,5-disulfonate; K salt of 5-Amino-4-hydroxy-m-benzenedisulfonic acid; 5-Amino-4-hydroxy-m-benzenedisulfonic acid dipotassium salt; DAS-K (common abbreviation); Azoic Coupling Component 18 (historical).
EINECS	Contact for details

Quality Control

Our production of Dipotassium 5-Amino-4-Hydroxybenzene-1,3-Disulphonate adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive synthesis applications. Certificates of Analysis (COA) documenting all critical parameters 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, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); 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	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfate Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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