2-Thiosalicylic acid

Nature

4-Carboxyphenyl thiol is an organic compound. It appears as a pale yellow crystalline or powdered solid.

p-Carboxyphenyl thiol combines the characteristics of phenols and thiophenols, exhibiting strong physicochemical properties. Here are some of its key properties:

1. Solubility: o-Carboxyphenyl thiol is slightly soluble in water and soluble in organic solvents such as ethers, alcohols, and ketones.

2. Acidity: o-Carboxyphenyl thiol is a weak acid, and its hydroxyl group can react with alkalis to form the corresponding salts.

3. Oxidative properties: o-Carboxyphenyl thiol exhibits certain oxidative properties and can be oxidized by various strong oxidants (such as hydrogen peroxide).

4. Reductivity: o-Carboxyphenyl thiol can undergo reduction under appropriate conditions to yield the corresponding phenol or thiol.

p-Carboxyphenyl thiol has a wide range of applications, primarily serving as a reagent and catalyst precursor in organic synthesis reactions. It is also extensively used in dyes, fluorescent agents, rubber plasticizers, and other fields. With its antioxidant and antifungal properties, it can function as a preservative and antioxidant.