3-Mercaptopropane-1,2-diol

3-Mercaptopropane-1,2-diol is a chemical compound with the molecular formula C3H8O2S. It is a colorless liquid that is soluble in water and has a strong odor. This compound is used in various industrial applications, including as a reducing agent in the manufacture of other chemicals.

Structure and properties

3-Mercaptopropane-1,2-diol consists of a three-carbon alkane backbone with a hydroxyl group (OH) attached to the first and second carbons and a thiol group (SH) attached to the third carbon. The presence of these functional groups gives the compound its unique properties.

The molecular weight of 3-Mercaptopropane-1,2-diol is 108.16 g/mol. It has a boiling point of 210 °C and a melting point of -50 °C. The compound is stable under normal conditions but can react with oxidizing agents.

Synthesis

3-Mercaptopropane-1,2-diol can be synthesized through the reaction of propylene oxide with hydrogen sulfide in the presence of a base. The reaction proceeds through a nucleophilic substitution mechanism, with the hydrogen sulfide acting as the nucleophile.

Applications

Due to its reducing properties, 3-Mercaptopropane-1,2-diol is used in the synthesis of other chemicals. It can also act as a chelating agent, binding to metals and preventing them from participating in unwanted reactions.

Safety

Like many other thiols, 3-Mercaptopropane-1,2-diol has a strong odor that can be unpleasant. It can cause irritation to the skin and eyes, and prolonged exposure can lead to more serious health effects. Therefore, it should be handled with care, using appropriate personal protective equipment.

See also

• Thiol
• Propylene oxide
• Reducing agent

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