1. Hair Styling and Perming:

In cosmetics, it is a core ingredient in curling agents (cold perm solutions), achieving curling or straightening by reducing disulfide bonds in hair keratin. A 1%-10% aqueous solution is commonly used.

2. Metal Ion Determination and Masking in Analytical Chemistry:

As a photometric reagent and masking agent, it is used for colorimetric determination of ions such as iron, aluminum, silver, tin, and molybdenum.

3. Pharmaceutical Industry:

Used as a reagent for determining iron and may serve as an intermediate or excipient in the synthesis of certain drugs.

4. Synthesis of Functional Adsorbent Materials:

Its solution can be used to synthesize adsorbent materials such as thiol-functionalized eggshell membranes for removing heavy metal ions from water, such as Cr(VI), Hg(II), Cu(II), Pb(II), Cd(II), and Ag(I).

5. Polymer Material Modification:

It can be used as a reagent in the synthesis of composite materials such as cellulose-Rhodamine B methacrylamide (cellulose-RhBMA).

6. Industrial Cleaning and Rust Removal:

Utilizing its reducing properties, it can be used as a cleaning agent and rust remover to remove oxides from metal surfaces.

7. Oil and Gas Field Completion Fluid Corrosion Inhibitor:

In oil exploration, it can be used as a corrosion inhibitor for high-density bromide completion fluids to inhibit the corrosion of pipes by drilling fluids.

8. PVC Stabilizer:

In the plastics industry, it can be used as a heat stabilizer for PVC to improve the thermal stability of the material.

9. Biochemical Research Tool:

As a disulfide bond reducing agent, it is used to treat proteins or peptides to study their structures.