Description

Mercaptopropanediol CAS NO 38098-46-3 is a versatile sulfur-containing diol, valued for its dual functional groups which make it a key intermediate in advanced organic synthesis. Its primary commercial significance lies in its ability to act as a chain transfer agent, stabilizer, and building block for specialty polymers and pharmaceuticals. This compound is essential for manufacturers in the polymer, pharmaceutical, and personal care industries seeking to introduce thiol functionality or enhance material properties.

Application

• As a chain transfer agent (CTA) and modifier in the production of acrylic and methacrylic polymers, controlling molecular weight and polymer architecture.
• As a key intermediate in the synthesis of pharmaceutical active ingredients and diagnostic agents.
• As a cross-linking agent and monomer for specialty resins and coatings with enhanced adhesion and flexibility.
• In the formulation of epoxy curing agents and adhesives, where the thiol group enables rapid curing at low temperatures.
• As a stabilizer and antioxidant precursor in various chemical processes and formulations.
• In research and development for creating novel bioconjugates and ligands in biochemistry.

Basic Information

Product Name	Mercaptopropanediol
CAS No.	38098-46-3
Molecular Formula	C3H8O2S
Molecular Weight	108.16 g/mol
Synonyms	3-Mercapto-1,2-propanediol; Thioglycerol; 1-Thioglycerol; 3-Thioglycerol; α-Monothioglycerol; 3-Mercaptopropane-1,2-diol; Glycerol 3-mercapto-1-ether; 1,2-Dihydroxy-3-mercaptopropane
EINECS	253-768-4

Quality Control

Our Mercaptopropanediol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including assay, identity confirmation, and impurity profiling, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with each shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and easily oxidized; it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.520 - 1.530
Specific Gravity (20/20°C)	1.240 - 1.260

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