Description

5-Amino-4-Hydroxytoluene-3-Sulphonic Acid is a specialized aromatic sulfonic acid derivative that serves as a critical intermediate in the synthesis of high-value organic compounds. Its unique structure, featuring both amino and hydroxyl substituents on the toluene-sulfonic acid backbone, makes it a versatile building block for creating complex molecules with specific functional properties. This compound is primarily utilized by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries who require reliable, high-purity intermediates for their synthesis processes.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and reactive dyes, contributing to color strength and fastness properties.
• Pharmaceutical Synthesis: Used as a building block for creating active pharmaceutical ingredients (APIs) and other fine chemicals requiring a sulfonated aromatic structure.
• Agrochemical Production: Employed in the manufacture of herbicides, fungicides, and other crop protection agents where its functional groups enable specific biological activity.
• Chemical Research & Development: Serves as a valuable reagent in organic synthesis for academic and industrial R&D laboratories exploring new chemical entities.
• Photographic Chemical: Can be used in the formulation of certain photographic developers and other light-sensitive materials.
• Complexing Agent Precursor: Its structure allows for modification into ligands used in metal complexation and catalysis.

Basic Information

Product Name	5-Amino-4-Hydroxytoluene-3-Sulphonic Acid
CAS No.	6387-15-1
Molecular Formula	C7H9NO4S
Molecular Weight	203.22 g/mol
Synonyms	4-Amino-5-hydroxy-2-methylbenzenesulfonic acid; 2-Amino-3-hydroxy-p-toluenesulfonic acid; 5-Amino-4-hydroxy-2-methylbenzenesulfonic acid; 2-Methyl-4-amino-5-hydroxybenzenesulfonic acid; 1-Hydroxy-2-amino-5-methyl-4-sulfonic acid; 4-Amino-5-hydroxy-6-methylbenzenesulfonic acid; 5-Amino-4-hydroxytoluene-3-sulfonic acid
EINECS	228-973-8

Quality Control

Our production of 5-Amino-4-Hydroxytoluene-3-Sulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet the exacting standards required for fine chemical synthesis. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, and we support compliance with global regulatory frameworks such as REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled 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 lead to caking or degradation.

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
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 2.0%

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