About Thionyl chloride
Thionyl chloride
Cas No.: 7719-09-7
Molecular Formula : Cl2OS
Molecular Weight : 118.97
Appearance : Colorless to yellow fuming liquid
Mp : -105°C
Bp : 79°C(lit.)
Density : 1.64 g/mL at 20°C
Fp : 105°C Hazardous Nature and Safe HandlingThionyl chloride demands careful handling due to its corrosive properties and tendency to react violently with water. Proper personal protective equipment (PPE) such as gloves, goggles, and chemical-resistant clothing is strongly advised during use. Ensure thorough ventilation in the workspace to prevent inhalation of its pungent, suffocating fumes.
Versatility in Chemical ManufacturingWidely valued for its high purity and reactivity, thionyl chloride serves as a vital intermediate for producing pharmaceuticals, pesticides, and dyes. Its function as a chlorinating and dehydrating agent makes it indispensable in chemical synthesis processes, allowing manufacturers to achieve specific reactions efficiently.
Storage and Transport GuidelinesFor safe storage, keep thionyl chloride in tightly closed containers away from any source of moisture, in a cool and dry area. It is usually packed in drums, carboys, or bottles of various sizes, and classified under Class 8 corrosives for transport. Strict observance of these guidelines ensures both product longevity and user safety.
FAQs of Thionyl chloride:
Q: How should thionyl chloride be safely stored and handled?
A: Thionyl chloride must be stored in a tightly closed container in a cool, dry place, away from all sources of moisture. During handling, use protective equipment such as gloves, eye protection, and chemical-resistant clothing in a well-ventilated area, as the compound is corrosive and releases irritating vapors.
Q: What are the main industrial applications of thionyl chloride?
A: Thionyl chloride is primarily used as a chlorinating and dehydrating agent in the manufacturing of pharmaceuticals, agrochemicals, dyes, and other chemical intermediates. Its reactivity makes it essential for creating specific synthesis pathways in chemical processing.
Q: When should thionyl chloride be avoided during a chemical process?
A: Avoid using thionyl chloride in processes involving water, alcohols, amines, or strong bases, as it reacts violently with these substances. Always ensure that your reaction environment is devoid of incompatible agents before introduction.
Q: Where does thionyl chloride find its benefits in manufacturing?
A: Thionyl chloride provides significant benefits in chemical and pharmaceutical manufacturing by facilitating efficient chlorination and dehydration. This allows for high-yield synthesis of complex molecules, contributing to the streamlined production of pharmaceuticals, dyes, and pesticides.
Q: What is the process of preparing thionyl chloride for shipment?
A: Preparation for shipment involves packaging thionyl chloride in tightly sealed drums, carboys, or bottles, ensuring the container is moisture-free. It is then labeled according to Class 8 (corrosive) transport regulations and stored or shipped in compliance with UN Number 1836 and the relevant HS Code.
Q: How long can thionyl chloride be stored, and what are the shelf-life conditions?
A: When stored in proper conditionssealed containers, away from moisture, in a cool and dry placethionyl chloride boasts a shelf life of up to 24 months. Deviation from recommended storage may affect purity and safety.