Description

4-Tolylthiosulfuric Acid is a specialized organosulfur compound with the CAS registry number 38078-55-6, serving as a valuable intermediate in advanced organic synthesis. Its unique structure, featuring both a thiosulfate and a tolyl group, makes it a critical reagent for introducing sulfur-containing functionalities into target molecules. This chemical is essential for research and industrial chemists in the pharmaceutical, agrochemical, and material science sectors who require high-purity building blocks for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those requiring specific sulfur-based pharmacophores.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and fungicides where the tolylthiosulfate moiety contributes to biological activity.
• Polymer & Material Science: Acts as a functional monomer or cross-linking agent in the development of specialty polymers and advanced materials with tailored properties.
• Chemical Research & Development: A versatile reagent in organic synthesis laboratories for constructing complex molecules, studying reaction mechanisms, and developing new synthetic methodologies.
• Ligand & Catalyst Preparation: Useful in the preparation of specialized ligands for metal catalysis or as a precursor for catalyst systems.

Basic Information

Product Name	4-Tolylthiosulfuric Acid
CAS No.	38078-55-6
Molecular Formula	C7H8O3S2
Molecular Weight	204.26 g/mol
Synonyms	p-Tolylthiosulfuric Acid; 4-Methylbenzenethiosulfonic Acid; p-Toluenethiosulfonic Acid; Benzenethiosulfonic acid, 4-methyl-; S-(4-Methylphenyl) thiosulfate; Thiosulfuric acid S-(4-methylphenyl) ester; p-Methylphenyl thiosulfate; 4-Methylphenyl hydrogen thiosulfate
EINECS	Contact for details

Quality Control

Every batch of our 4-Tolylthiosulfuric Acid is manufactured under strict quality management systems and undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring reliability for your critical synthesis workflows.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. Due to its chemical nature, it should be stored separately from strong oxidizing agents, strong bases, and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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