Sulfuryl dichloride

Sulfuryl dichloride is an inorganic chemical compound with the formula Cl2O2S and CAS number 7791-25-5. This substance has a molecular weight of 134.97 g/mol and is classified as a corrosive and toxic chemical. It belongs to the sulfur oxychloride family and is considered a dangerous substance requiring special handling precautions due to its corrosive properties and potential health hazards.

Sulfuryl dichloride is a colorless to pale yellow liquid at room temperature with a pungent, acrid odor. It has a boiling point of approximately 69°C and readily decomposes in the presence of moisture, releasing toxic gases including hydrogen chloride and sulfur dioxide. The substance is highly reactive with water and alcohols, making it moisture-sensitive and requiring anhydrous storage conditions.

Sulfuryl dichloride is primarily used as a chlorinating agent in organic synthesis and pharmaceutical manufacturing. It serves as an important intermediate in the production of various chemicals, including pesticides, dyes, and specialty chemicals. The compound is also utilized in laboratory settings for specific chemical reactions requiring controlled chlorination processes and in the synthesis of sulfonyl chlorides.

Sulfuryl dichloride requires strict safety measures including wearing full personal protective equipment: chemical-resistant gloves, safety goggles, and protective clothing. Work must be conducted in well-ventilated areas or under fume hoods due to toxic vapor release. Avoid contact with skin, eyes, and respiratory system. Keep away from moisture and incompatible materials, and ensure emergency shower and eyewash stations are readily accessible.

Sulfuryl dichloride must be stored in tightly sealed, moisture-proof containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep separate from water, alcohols, bases, and metals to prevent dangerous reactions. Storage areas should be equipped with appropriate spill containment measures and maintained at stable temperatures to prevent decomposition and pressure buildup.

Skin contact with sulfuryl dichloride requires immediate removal of contaminated clothing and thorough washing with plenty of water for at least 15 minutes. For eye contact, flush immediately with water for 15-20 minutes while holding eyelids open. If inhaled, move to fresh air immediately. Seek medical attention promptly in all cases of exposure, as this substance can cause severe chemical burns and respiratory irritation.

Sulfuryl dichloride disposal must comply with local and national hazardous waste regulations as it is classified as dangerous waste. The substance should never be poured down drains or released into the environment. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities may be neutralized carefully under controlled conditions by qualified personnel before disposal through approved channels.

Sulfuryl dichloride is classified under ADR as Class 6.1 (toxic substances), Packing Group I, indicating high toxicity requiring stringent transport regulations. It must be shipped in approved UN specification packaging with proper hazard labels and documentation. Transportation requires trained personnel and vehicles equipped for dangerous goods, following strict routing and emergency response protocols established by international transport regulations.

Sulfuryl dichloride is subject to comprehensive chemical regulations including REACH registration requirements in Europe and CLP classification as STOT SE 3 and Skin Corr. 1B. It carries the 'Danger' signal word with GHS pictograms GHS05 and GHS07. While not listed as an SVHC substance, it requires compliance with occupational safety standards and may be subject to additional national restrictions regarding use and handling.

Sulfuryl dichloride is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers. As a professional chemical supplier, OYSI ensures proper handling, packaging, and documentation compliance with European regulations. Contact OYSI directly for availability, technical specifications, and regulatory documentation required for your specific application and location within Europe.