Ethyl carbonochloridate

Ethyl carbonochloridate is an organic chemical compound with the molecular formula C3H5ClO2 and CAS number 541-41-3. This chloroformate ester has a molecular weight of 108.52 g/mol and belongs to the family of carbonyl chlorides. It is classified as a highly hazardous substance with multiple danger classes including flammable liquid, acute toxicity, and skin corrosion properties, requiring careful handling in industrial applications.

Ethyl carbonochloridate is a colorless to pale yellow liquid with a pungent, irritating odor characteristic of chloroformates. It has a molecular weight of 108.52 g/mol and is highly reactive with water, decomposing to form ethanol, carbon dioxide, and hydrogen chloride. The compound is soluble in organic solvents but reacts violently with water and alcohols, making it moisture-sensitive and requiring anhydrous storage conditions.

Ethyl carbonochloridate serves as an important intermediate in organic synthesis, particularly in pharmaceutical and agrochemical manufacturing. It is commonly used as a reagent for introducing ethoxycarbonyl groups into organic molecules, in peptide synthesis as an activating agent, and in the preparation of carbamates and urethanes. The compound also finds application in the production of various esters and as a derivatizing agent in analytical chemistry.

Ethyl carbonochloridate requires strict safety measures due to its high toxicity and corrosive nature. Always wear full personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection in well-ventilated areas or fume hoods. Avoid contact with skin, eyes, and clothing, and prevent inhalation of vapors. Work with small quantities only, keep away from heat sources and ignition, and have emergency eyewash and shower facilities readily available.

Ethyl carbonochloridate must be stored in tightly sealed, moisture-proof containers in a cool, dry, well-ventilated area away from heat, sparks, and direct sunlight. Keep containers in secondary containment and separate from incompatible materials such as water, alcohols, amines, and strong bases. Store in original labeled containers under inert atmosphere when possible, and maintain storage temperatures below 25°C to prevent decomposition and pressure buildup.

Ethyl carbonochloridate exposure requires immediate emergency response due to its highly toxic and corrosive properties. For skin contact, immediately remove contaminated clothing and flush affected area with copious amounts of water for at least 15 minutes. In case of eye contact, rinse continuously with water and seek immediate medical attention. If inhaled, move to fresh air immediately and provide oxygen if breathing is difficult. Seek medical attention promptly for all exposure incidents.

Ethyl carbonochloridate disposal must comply with local and European waste regulations as a hazardous chemical waste. The compound should be treated through controlled incineration at authorized hazardous waste facilities equipped with appropriate emission controls. Never pour down drains or dispose in regular waste streams. Small quantities can be carefully hydrolyzed under controlled conditions by trained personnel, but professional hazardous waste disposal is recommended for most situations.

Ethyl carbonochloridate is classified under ADR as Class 6.1 (toxic substances), Packing Group I, indicating its high toxicity level for transport purposes. It requires appropriate UN-specification packaging, proper labeling with toxic and corrosive hazard diamonds, and transport documentation. Only authorized carriers trained in hazardous materials transport should handle shipments, and emergency response information must accompany all shipments according to ADR regulations.

Ethyl carbonochloridate is subject to comprehensive European chemical regulations including REACH registration requirements and CLP classification obligations. It carries multiple GHS pictograms (GHS02, GHS06, GHS05) indicating flammable, toxic, and corrosive hazards with 'Danger' signal word. While not currently listed as an SVHC substance, it requires strict compliance with occupational exposure limits, proper safety data sheets, and may be subject to additional national restrictions in various European countries.

Ethyl carbonochloridate is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers across Europe. As a regulated hazardous chemical, it requires proper documentation, safety data sheets, and compliance with transport regulations. OYSI provides technical support and ensures regulatory compliance for ethyl carbonochloridate purchases, offering reliable supply chain management for this critical chemical intermediate to qualified professional users.