Description

5-Amino-4-Hydroxybenzene-1,3-Disulphonic Acid is a key aromatic sulfonic acid derivative, serving as a critical intermediate in the synthesis of complex organic molecules. Its value lies in its bifunctional structure, featuring both amino and hydroxy groups on a disulfonated benzene ring, which makes it a versatile building block for creating dyes, pigments, and specialty chemicals. This compound is essential for manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries seeking to develop products with specific colorant properties or biological activity.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of azo dyes, acid dyes, and reactive dyes, contributing to color fastness and solubility.
• Pharmaceutical Synthesis: Used as a building block in the manufacture of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Production: Employed in the synthesis of herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Serves as a versatile intermediate in organic synthesis for creating novel compounds in R&D laboratories.
• Complexing Agent: Can act as a ligand or intermediate in the production of metal complex dyes and other coordination compounds.

Basic Information

Product Name	5-Amino-4-Hydroxybenzene-1,3-Disulphonic Acid
CAS No.	120-98-9
Molecular Formula	C6H7NO7S2
Molecular Weight	269.25 g/mol
Synonyms	1,3-Benzenedisulfonic acid, 5-amino-4-hydroxy-; 4-Hydroxy-5-aminobenzene-1,3-disulfonic acid; 5-Amino-4-hydroxy-m-benzenedisulfonic acid; 2-Amino-3-hydroxy-1,5-benzenedisulfonic acid; 3-Amino-4-hydroxybenzene-1,5-disulfonic acid; 4-Amino-5-hydroxy-1,3-benzenedisulfonic acid; 5-Amino-4-hydroxy-1,3-benzenedisulfonic acid; Azoic Coupling Component 13
EINECS	204-447-5

Quality Control

Our 5-Amino-4-Hydroxybenzene-1,3-Disulphonic Acid is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee consistency and support your quality assurance protocols.

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). Keep away from strong oxidizing agents and strong bases. The material is hygroscopic; ensure containers are sealed tightly after use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
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.