Overview
Dodecanethiol, also known as lauryl mercaptan, is an organic sulfur compound with the formula C12H26S. It is a member of the thiol family, characterized by the presence of a sulfhydryl (-SH) group. This compound is widely used in industrial applications due to its ability to act as a chain transfer agent in polymerization reactions, which helps control the molecular weight of polymers. Dodecanethiol is typically a colorless to pale yellow liquid with a strong, unpleasant odor. It is insoluble in water but miscible with most organic solvents. Its primary role in industry is to modify polymer properties, but it also finds use as a corrosion inhibitor and in the synthesis of other specialty chemicals.
Physical and Chemical Properties
Dodecanethiol has a molecular weight of 202.40 g/mol and a density of 0.845 g/cm³ at 20°C. It melts at -7°C and boils between 266-283°C, depending on atmospheric conditions. The compound is hydrophobic, making it insoluble in water, but it dissolves readily in organic solvents such as ethanol, ether, and benzene. One of the key chemical properties of dodecanethiol is its reactivity as a nucleophile, owing to the presence of the sulfhydryl group. This reactivity makes it useful in various chemical reactions, including the formation of thioethers and as a reducing agent. However, it is also flammable and can form explosive mixtures with air, necessitating careful handling and storage.
Main Applications
Dodecanethiol is primarily used as a chain transfer agent in the production of synthetic rubber and plastics. By controlling the chain length during polymerization, it helps achieve desired material properties such as elasticity and strength. This application is critical in industries manufacturing adhesives, coatings, and elastomers. Beyond polymerization, dodecanethiol serves as a corrosion inhibitor in metalworking fluids and as an intermediate in the synthesis of surfactants and pharmaceuticals. Its ability to form stable bonds with metal surfaces makes it effective in protecting machinery and equipment from oxidative damage.
Safety and Storage
Dodecanethiol is classified as a hazardous substance due to its flammability and potential health effects. It can cause skin and eye irritation upon contact and is harmful if inhaled or ingested. Proper personal protective equipment (PPE), including gloves and goggles, should be worn when handling this chemical. Storage requirements include keeping dodecanethiol in a cool, dry, well-ventilated area away from oxidizing agents and sources of ignition. Containers should be tightly sealed to prevent vapor release. In case of a spill, absorbent materials like sand or vermiculite should be used to contain the liquid, and contaminated areas should be cleaned promptly to avoid environmental contamination.
B2B Procurement Guide
When procuring dodecanethiol, B2B buyers should prioritize suppliers who provide comprehensive documentation, including material safety data sheets (MSDS) and certificates of analysis (CoA). These documents ensure the product meets purity and safety standards. Buyers should also verify the supplier’s ability to handle bulk quantities and offer secure packaging to prevent leaks during transit. Price negotiation is common, with costs typically ranging between $20-$50 per kg, depending on volume and purity. Buyers should consider long-term contracts for stable pricing and supply continuity. Additionally, evaluating the supplier’s compliance with environmental and safety regulations is crucial to avoid legal and operational risks.
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