Description

Cresolsulfuric Acid CAS NO 26590-31-8 is a versatile organosulfur compound that serves as a key intermediate in the synthesis of fine chemicals and specialty materials. Its unique structure, combining phenolic and sulfonic acid functionalities, makes it valuable for introducing specific chemical groups and modifying material properties. This product is essential for manufacturers in the pharmaceutical, agrochemical, and polymer industries seeking reliable, high-purity intermediates for complex synthesis.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs, particularly where sulfonation or phenolic coupling is required.
• Agrochemical Synthesis: Acts as a building block for herbicides, fungicides, and plant growth regulators, contributing to the sulfonate or phenolic moiety in the final molecule.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity, ion-exchange capacity, or dye affinity for specialty resins and fibers.
• Chemical Research & Development: Serves as a valuable reagent in organic synthesis laboratories for developing new compounds and catalytic processes.
• Dye and Pigment Manufacturing: Utilized in the production of sulfonated dyes and colorants, improving solubility and fastness properties.
• Surfactant Precursor: Can be further processed to create specialized anionic surfactants for industrial and formulation applications.

Basic Information

Product Name	Cresolsulfuric Acid
CAS No.	26590-31-8
Molecular Formula	C7H8O4S
Molecular Weight	188.20 g/mol
Synonyms	Phenol, 4-methyl-, hydrogen sulfate; p-Cresyl sulfate; p-Cresol sulfate; p-Methylphenyl sulfate; 4-Methylphenyl sulfate; 4-Methylphenol sulfate; p-Tolyl sulfate; Cresylsulfuric Acid
EINECS	Contact for details

Quality Control

Our Cresolsulfuric Acid is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, which includes results for assay, related substances, and other critical parameters. Our quality commitment ensures the material meets the stringent requirements for use as a pharmaceutical and fine chemical intermediate.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Due to its nature as a strong acid/organic solvent, appropriate secondary containment is recommended. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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