Description

2-Hydroxy-5-Methylbenzenesulfonic Acid is a versatile organic sulfonic acid derivative, serving as a key intermediate in the synthesis of more complex chemical structures. Its value lies in its dual functionality, combining the reactivity of a phenolic hydroxyl group with the strong acidity and water-solubility of a sulfonic acid group. This compound is essential for manufacturers in the agrochemical, dye, and pharmaceutical industries, where it is used to create active ingredients, colorants, and specialty chemicals.

Application

• Agrochemical Intermediate: A crucial building block in the synthesis of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Used in the production of azo dyes and other colorants, where it acts as a coupling agent or a solubilizing group.
• Pharmaceutical Synthesis: Serves as an intermediate for creating active pharmaceutical ingredients (APIs) and other fine chemicals.
• Chemical Research & Development: Employed as a reagent in organic synthesis and catalysis studies within R&D laboratories.
• Polymer Modification: Can be used to introduce sulfonate groups into polymers to alter their solubility and ionic properties.
• Metal Chelation and Treatment: Functions as a component in formulations for metal surface treatment and in certain chelating agents.

Basic Information

Product Name	2-Hydroxy-5-Methylbenzenesulfonic Acid
CAS No.	7134-06-7
Molecular Formula	C7H8O4S
Molecular Weight	188.20 g/mol
Synonyms	5-Methyl-2-hydroxybenzenesulfonic acid; 5-Methylsalicylic acid sulfonic acid; Cresolsulfonic acid (mixed isomer reference); 2-Hydroxy-5-methylbenzene-1-sulfonic acid; 5-Methyl-2-sulfophenol; 5-Methylsalicylic acid-2-sulfonic acid; 2-Hydroxy-p-toluenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of 2-Hydroxy-5-Methylbenzenesulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC, NMR, and titration. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance processes.

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). This material is hygroscopic (moisture-sensitive) and a strong acid; ensure containers are kept sealed to prevent absorption of atmospheric moisture and store away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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