Overview
2-Mercaptoethoxyethanol is an organosulfur compound combining hydroxyl and thiol functional groups in its molecular structure. This bifunctional nature makes it valuable for various chemical transformations and industrial applications. The compound was first synthesized in the mid-20th century as part of research into sulfur-containing glycols. Its unique combination of water solubility and reactive thiol group has led to adoption in specialty chemical manufacturing processes.
Physical and Chemical Properties
As a liquid at room temperature, 2-mercaptoethoxyethanol exhibits moderate viscosity and a characteristic sulfurous odor. Its thiol group (SH) provides nucleophilic reactivity, while the hydroxyl group enables hydrogen bonding and water solubility. The compound's chemical stability is moderate, requiring protection from atmospheric oxidation. It shows good thermal stability below 200°C, making it suitable for various process conditions. The thiol group participates readily in radical reactions, substitution processes, and metal complexation.
Main Applications
In pharmaceutical synthesis, 2-mercaptoethoxyethanol serves as a building block for drug molecules containing sulfur moieties. Its ability to act as both nucleophile and hydrogen bond donor makes it versatile for constructing complex molecular architectures. Industrial applications include use as a chain transfer agent in polymerization processes and as a modifier for epoxy resins. The compound also finds niche use in specialty adhesives and as a corrosion inhibitor in certain metal treatment formulations.
Safety and Storage
Proper handling of 2-mercaptoethoxyethanol requires adequate ventilation and chemical-resistant PPE due to its irritant properties and unpleasant odor. The thiol group makes it particularly important to avoid contact with oxidizing agents. Storage should be in tightly sealed containers under nitrogen atmosphere when possible, as the thiol group can oxidize over time. Stainless steel or lined containers are preferred for bulk storage. Shelf life typically ranges 12-24 months when properly stored.
B2B Procurement Guide
When sourcing 2-mercaptoethoxyethanol, buyers should specify required purity grade (technical, purified, or analytical) and whether stabilization additives are acceptable. Bulk purchases (drum quantities or larger) typically offer better pricing but require verification of storage capabilities. Quality certifications to request include CoA (Certificate of Analysis) with HPLC purity data and residual solvent testing. For international shipments, verify compatibility with transportation regulations for sulfur-containing compounds. Lead times may vary from 2-6 weeks depending on supplier inventory.
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