Is p-toluenesulfonic acid strong? Which is more acidic than sulfuric acid?

p-toluenesulfonic acid picture Image: Structural formula of p-toluenesulfonic acid P-toluenesulfonic acid is a strong acid, its chemical formula: p-CH3C6H4SO3H, non-oxidizing. P-toluenesulfonic acid Pka-2.8, similar to its acidity are methanesulfonic acid Pka-2.6, sulfuric acid pka-3.0. Therefore, although p-toluenesulfonic acid is a strong acid, its acidity is slightly weaker than that of sulfuric acid. P-toluenesulfonic acid is widely used in the synthesis of pharmaceuticals, pesticides, stabilizers for polymerization reactions, and catalysts for organic synthesis (esters, etc.). It is used as an intermediate for pharmaceuticals, coatings, and resin curing agents, and also as an intermediate for electroplating. If accidentally exposed, the following measures need to be taken: 1. Skin contact: Immediately remove contaminated clothing and rinse with plenty of running water for at least 15 minutes. Seek medical attention. 2. Eye contact: Immediately lift the eyelids and rinse thoroughly with plenty of flowing water or normal saline for at least 15 minutes. Seek medical attention. 3. Inhalation: Quickly leave the scene to a fresh place of air. Keep the respiratory tract unobstructed. If breathing difficulties, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. 4. Ingestion: Gargle with water, drink milk or egg whites. Seek medical attention.