Description

α-Hydroxy-p-Methoxytoluene-α-Sulphonic Acid is a specialized organic sulfonic acid derivative, serving as a key intermediate in fine chemical synthesis. Its value lies in its unique bifunctional structure, combining phenolic and sulfonic acid groups, which enables precise chemical modifications. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty dye industries seeking to develop advanced active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: Critical for the synthesis of active pharmaceutical ingredients (APIs), particularly in constructing complex molecular scaffolds.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Acts as a key intermediate for creating sulfonated azo dyes and other colorants with enhanced solubility and fastness properties.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, improving characteristics like hydrophilicity and ion-exchange capacity.
• Research & Development: Serves as a building block in organic chemistry research for novel compound libraries and material science applications.
• Surfactant Precursor: Can be further processed to create specialized anionic surfactants for niche industrial applications.

Basic Information

Product Name	α-Hydroxy-p-Methoxytoluene-α-Sulphonic Acid
CAS No.	81-12-9
Molecular Formula	C9H12O5S
Molecular Weight	232.25 g/mol
Synonyms	4-Methoxy-α-hydroxy-α-methylbenzenesulfonic acid; 2-Hydroxy-2-(4-methoxyphenyl)ethanesulfonic acid; p-Methoxy-α-methylolbenzenesulfonic acid; α-Hydroxy-p-methoxy-α-methylbenzenesulfonic acid; Creosol sulfonic acid; 4-Methoxy-α-methylolbenzenesulfonic acid; (4-Methoxyphenyl)(hydroxy)methanesulfonic acid
EINECS	201-327-7

Quality Control

Our α-Hydroxy-p-Methoxytoluene-α-Sulphonic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets exacting standards for industrial and research use. A Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with every shipment to guarantee traceability and consistency.

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). Due to its hygroscopic (moisture-sensitive) nature and strong acid properties, the container must be kept tightly sealed and stored separately from bases, oxidizing agents, and reactive metals.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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