3-Mercaptopropionic Acid

3-Mercaptopropionic Acid (CAS 107-96-0) is a versatile bifunctional organic compound containing both a thiol (-SH) and a carboxylic acid (-COOH) group. It appears as a colorless to pale yellow clear oily liquid with a sulfurous odor. With a molecular formula of C₃H₆O₂S and a molecular weight of 106.14, this product serves as a key chemical building block in numerous industrial applications. It is widely used in the production of PVC heat stabilizers, where it acts as both a primary and secondary stabilizer in combination with phenolic antioxidants. Additionally, 3-MPA functions as an effective chain transfer agent in polymerizations, particularly in the synthesis of polycarboxylate superplasticizers for the construction industry. In the food and beverage industry, it is used as a flavoring agent (FEMA# 4587). In advanced research applications, 3-MPA is employed to produce hydrophilic self-assembled monolayers (SAMs) for biosensor applications and as a capping agent for quantum dot nanocrystals in biomedical labeling. It also finds use in adhesives, resins, depilatory products, and hair waving or straightening formulations.

  • Synonyms:

    3-Mercaptopropanoic acid, 3-Thiopropanoic acid,3-Sulfanylpropanoic acid

  • Formula:

    C3H6O2S

  • CAS NO.:

    107-96-0

  • Package:

    250kg/drum

  • Certificate:

    ISO 9001

Our Achievement

Global Reach: Our 3-Mercaptopropionic Acid  has been successfully exported and applied in key markets across the globe, including but not limited to Saudi Arabia,South Arica, Thailand and Croatia. Our product has consistent quality and ability to meet diverse international standards.


Equivalent Alternatives: Our product has served as a reliable alternative to Sihauli,Alfa Aesar  for several local manufacturers, helping them reduce costs with comparable (or even superior) results in performance.


Key Applications
  • • PVC Heat Stabilizers
  • • Polymerization Chain Transfer Agen
  • •Pharmaceutical Intermediate
  • •Nanoparticle Functionalization
  • • Flavor & Fragrance Industry
  • •Electronics & Semiconductor Industry
The main detailed uses of the product
  • PVC Cement
    PVC Cement

    The primary solvent for PVC pipe cements and adhesives, providing strong bonds.

  • Versatile Use in Plasticizers and PVC Stabilizers
    Versatile Use in Plasticizers and PVC Stabilizers

    Due to its ability to form esters, TMP is used in the production of plasticizers . It also functions directly as a thermal stabilizer for Polyvinyl Chloride (PVC) resins, helping to maintain the material's integrity during processing . Furthermore, it acts as a cross-linking agent and modifier in various polymer systems, improving their performance characteristics .

  • Epoxy Resins
    Epoxy Resins

    A significant portion of BPA is used in the manufacture of epoxy resins . These resins are widely used as protective coatings for metal cans (food and beverage containers), automotive primers, industrial floorings, and as adhesives due to their excellent corrosion resistance and adhesion properties .

Why Choose Our 3-Mercaptopropionic Acid?

As a key intermediate for high‑value chemicals and advanced materials, our 3‑MPA is produced with a focus on purity, consistency, and supply security. Here is why chemists and procurement managers choose us:


1.High Assay (≥99.5%) & Low Impurity Profile – Rigorous distillation and quality control ensure minimal residual solvents, water, and metal ions, making our product ideal for pharmaceutical and electronic‑grade applications.

2.Colour Stability (APHA ≤ 20) – Our superior refining process yields a nearly colourless liquid, reducing the risk of discolouration in final polymer or nanoparticle formulations.

3.Versatile Packaging Options – Available in corrosion‑resistant containers (25 kg drums, 200 kg HDPE drums, and ISO tanks) with inert gas blanketing to prolong shelf life and prevent oxidation.

4.Global Regulatory Compliance – Fully compliant with REACH, TSCA, and other regional regulations; we provide full certificates of analysis, SDS, and regulatory documentation for seamless customs clearance.

5Reliable Production Capacity – With a dedicated production line and multi‑source raw material procurement, we guarantee stable supply even during tight market conditions, with lead times as short as 7 days.

6.Application‑Tailored Grades – We offer customised grades (e.g., extra‑low heavy metals for electronics, or low‑odour for flavours/fragrances) to match your specific end‑use requirements.

Commitment to Quality and Innovation

We are committed to providing high-quality   3-Mercaptopropionic Acid that meets stringent international standards. Our focus on innovation and sustainability ensures that our products not only enhance your applications but also align with evolving environmental regulations and industry trends.

Your questions about our products