Description

Ammonium p-Toluenesulfonate (CAS: 4124-42-9) is a high-purity organic salt with the molecular formula C₇H₁₁NO₃S, widely used in research and industrial applications. This compound, also known as Ammonium Tosylate, is a white to off-white crystalline powder with excellent solubility in water and polar organic solvents. It serves as a versatile intermediate in organic synthesis, catalysis, and electroplating processes. Its stable ionic structure and compatibility with various reaction conditions make it ideal for laboratory-scale experiments and large-scale manufacturing. Packaged in secure, moisture-resistant containers to ensure long-term stability and performance consistency.

Properties

• CAS Number: 4124-42-9
• Complexity: 193
• IUPAC Name: ammonium;4-methylbenzenesulfonate
• InChI: InChI=1S/C7H8O3S.H3N/c1-6-2-4-7(5-3-6)11(8,9)10;/h2-5H,1H3,(H,8,9,10);1H3
• InChI Key: GDCXBZMWKSBSJG-UHFFFAOYSA-N
• Exact Mass: 189.04596439
• Molecular Formula: C7H11NO3S
• Molecular Weight: 189.23
• SMILES: CC1=CC=C(C=C1)S(=O)(=O)[O-].[NH4+]
• Topological: 66.6
• Monoisotopic Mass: 189.04596439
• Synonyms: Ammonium toluene-4-sulphonate, Ammonium p-toluenesulfonate, Benzenesulfonic acid, 4-methyl-, ammonium salt (1:1), Benzenesulfonic acid, 4-methyl-, ammonium salt, EINECS 223-927-4, p-Toluenesulfonic acid, ammonium salt, DTXSID90884038, DTXCID001023510, 223-927-4, 4124-42-9, Ammonium 4-methylbenzenesulfonate, amine-p-toluene sulfonic acid, ammonium tosylate, ammonium tosylate salt, azanium;4-methylbenzenesulfonate, DB-243050, NS00083408, H37068

Ammonium p-Toluenesulfonate is commonly employed as a catalyst or reagent in organic synthesis, particularly in esterification and polymerization reactions. It is also utilized in electroplating baths for improved metal deposition efficiency. Researchers leverage its ionic properties in buffer formulations and as a phase-transfer agent in biphasic systems.

Safety and Hazards

GHS Hazard Statements

• Not Classified
• Reported as not meeting GHS hazard criteria by 5 of 5 companies. For more detailed information, please visit ECHA C&L website.

Hazard Classes and Categories

• Not Classified

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