Description

3-Mercapto-1-propanol is a versatile organosulfur compound featuring both a thiol and a primary alcohol functional group, making it a valuable bifunctional building block. Its primary commercial value lies in its ability to act as a chain transfer agent, crosslinker, and precursor for synthesizing more complex sulfur-containing molecules. This chemical is essential for industries requiring precise molecular control in polymer synthesis, pharmaceutical intermediates, and specialty chemical manufacturing. We supply high-purity grades to meet the stringent demands of global research and industrial applications.

Application

• Polymer & Resin Modification: Acts as a chain transfer agent (CTA) or crosslinking agent in radical polymerization processes to control molecular weight and introduce thiol functionality.
• Pharmaceutical Intermediates: Serves as a key synthon for the production of various active pharmaceutical ingredients (APIs) and diagnostic agents.
• Ligand Synthesis: Used in the preparation of chelating ligands for metal catalysis and extraction processes.
• Surface Functionalization: Employed to modify material surfaces (e.g., gold nanoparticles, polymers) via thiol-gold or thiol-ene "click" chemistry.
• Flavor & Fragrance Industry: Utilized as a precursor for sulfur-containing flavor compounds.
• Adhesive & Sealant Formulations: Functions as a crosslinker or adhesion promoter in specialty epoxy and polyurethane systems.
• Chemical Synthesis: A versatile reagent for organic synthesis, including nucleophilic additions and protection/deprotection strategies.

Basic Information

Product Name	3-Mercapto-1-propanol
CAS No.	19721-22-3
Molecular Formula	C3H8OS
Molecular Weight	92.16 g/mol
Synonyms	3-Mercaptopropanol; 3-Mercaptopropyl alcohol; 3-Hydroxy-1-propanethiol; 1-Propanol, 3-mercapto-; 3-Thiopropanol; β-Mercaptopropanol; 3-Sulfanylpropan-1-ol; Thioglycerol (less specific)
EINECS	243-262-7

Quality Control

Our 3-Mercapto-1-propanol is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and titration methods, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with every shipment. We can supply grades tailored to meet various industry standards, including research and technical grades.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This product is easily oxidized (store under inert atmosphere). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.480 - 1.490
Density (20°C)	1.05 - 1.10 g/mL

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.