Description

Cumenesulphonic Acid CAS NO 37953-05-2 is a specialized organic sulfonic acid derivative valued for its strong acidity and solubility in organic media. This compound serves as a versatile intermediate and catalyst in advanced chemical synthesis, offering a balance of reactivity and handling characteristics. It is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors seeking efficient acid catalysts or building blocks for sulfonation reactions.

Application

• Chemical Synthesis Catalyst: Acts as a strong, soluble acid catalyst in organic reactions such as esterification, alkylation, and condensation.
• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals requiring sulfonic acid groups.
• Agrochemical Production: Serves as a key intermediate in the manufacture of herbicides, fungicides, and other crop protection agents.
• Dye and Pigment Manufacturing: Employed in sulfonation processes to produce acid dyes and organic pigments.
• Ion Exchange Resins: Functions as a monomer or modifying agent in the production of specialty ion exchange materials.
• Surfactant and Detergent Intermediate: Used in the synthesis of specialized surfactants where the cumene group imparts specific solubility properties.
• Polymer Modification: Applied as a curing agent or catalyst in epoxy resin systems and other polymer formulations.
• Research & Development: Utilized in laboratory-scale organic synthesis and process development within R&D facilities.

Basic Information

Product Name	Cumenesulphonic Acid
CAS No.	37953-05-2
Molecular Formula	C9H12O3S
Molecular Weight	200.26 g/mol
Synonyms	4-Isopropylbenzenesulfonic Acid; p-Cumenesulfonic Acid; (4-Isopropylphenyl)sulfonic Acid; p-Isopropylbenzenesulfonic Acid; Cumene-4-sulfonic Acid; 1-Isopropyl-4-sulfobenzene; p-(1-Methylethyl)benzenesulfonic Acid
EINECS	Contact for details

Quality Control

Our Cumenesulphonic Acid is produced under strict quality management systems to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation. Certificates of Analysis (COA) documenting purity and key specifications are provided with every shipment. We adhere to cGMP principles where applicable, and our quality systems support compliance with global regulatory standards for industrial chemical manufacturing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its nature as a strong acid/organic solvent, it should be stored separately from incompatible materials such as strong bases, oxidizing agents, and reactive metals. Ensure containers are kept upright to prevent leakage.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 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.