Sulfuryl dichloride

Sulfuryl dichloride is an inorganic chemical compound with the molecular formula Cl2O2S and CAS number 7791-25-5. This substance has a molecular weight of 134.97 g/mol and belongs to the family of sulfur-containing compounds. It is classified as a dangerous substance with corrosive properties (Skin Corr. 1B) and specific target organ toxicity (STOT SE 3), requiring careful handling and appropriate safety measures in industrial applications.

Sulfuryl dichloride is a colorless to pale yellow liquid at room temperature with a pungent, acrid odor. It has a molecular weight of 134.97 g/mol and reacts violently with water, producing hydrochloric acid and sulfuric acid. The compound is highly corrosive and exhibits strong oxidizing properties. It has a high vapor pressure and can release toxic fumes when heated or decomposed.

Sulfuryl dichloride is primarily used as a chlorinating agent in organic synthesis and pharmaceutical manufacturing. It serves as an intermediate in the production of various chemicals, including pesticides, dyes, and specialty chemicals. The compound is also utilized in laboratory settings for specific analytical procedures and as a reagent in organic chemistry reactions requiring selective chlorination under controlled conditions.

Sulfuryl dichloride must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods due to its corrosive nature and toxic vapor release. Avoid contact with water and moisture, as this causes violent reactions. Emergency eyewash stations and safety showers should be readily accessible when working with this substance.

Sulfuryl dichloride should be stored in tightly sealed, corrosion-resistant containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers away from water, alcohols, and organic materials to prevent violent reactions. Storage areas must be equipped with appropriate spill containment systems and should be accessible only to trained personnel wearing proper protective equipment.

Sulfuryl dichloride contact requires immediate emergency response due to its highly corrosive nature. For skin contact, immediately flush with large amounts of water for at least 15 minutes and remove contaminated clothing. In case of eye contact, rinse continuously with water and seek immediate medical attention. If inhaled, move the person to fresh air immediately and provide respiratory support if needed. Always seek professional medical treatment promptly.

Sulfuryl dichloride disposal must comply with local and international hazardous waste regulations due to its corrosive and toxic properties. The substance should be neutralized carefully by qualified personnel before disposal, typically through controlled hydrolysis followed by neutralization. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Never dispose of this chemical through regular waste streams or sewage systems.

Sulfuryl dichloride is classified under ADR Class 6.1 (toxic substances) with Packing Group I, indicating high danger level during transport. It requires specialized packaging, labeling, and documentation according to dangerous goods regulations. Transportation must be performed by certified carriers with appropriate emergency equipment and trained personnel. Vehicles must display proper hazard placards and carry emergency response information.

Sulfuryl dichloride is subject to various regulatory frameworks including REACH registration, CLP classification, and local chemical safety regulations. It carries the signal word 'Danger' with GHS pictograms GHS05 and GHS07, indicating corrosive and health hazard properties. The substance is not currently listed as an SVHC (Substance of Very High Concern) but requires compliance with standard chemical safety and workplace exposure regulations.

Sulfuryl dichloride is available through OYSI, a European distributor of technical chemicals specializing in industrial and laboratory-grade chemical products. OYSI provides reliable supply chains across Europe with proper documentation, safety data sheets, and regulatory compliance support. As a specialized chemical requiring careful handling, purchases typically require verification of end-use applications and appropriate safety infrastructure at the receiving facility.