Methyl carbonochloridate

Methyl carbonochloridate is an organochlorine chemical compound with the molecular formula C2H3ClO2 and CAS number 79-22-1. This highly reactive chemical intermediate has a molecular weight of 94.5 g/mol and belongs to the chloroformate family. It is classified as extremely hazardous due to its flammable, toxic, and corrosive properties, requiring specialized handling and safety measures in industrial applications.

Methyl carbonochloridate is a colorless to pale yellow liquid at room temperature with a pungent, irritating odor. The compound is highly reactive with water, undergoing hydrolysis to form methanol, carbon dioxide, and hydrogen chloride. It has high vapor pressure and is soluble in organic solvents but reacts violently with water and alcohols, making it moisture-sensitive and requiring anhydrous storage conditions.

Methyl carbonochloridate serves as a key chemical intermediate in pharmaceutical synthesis, particularly for introducing methoxycarbonyl protecting groups in organic chemistry. It is used in the production of carbamates, pharmaceuticals, and agrochemicals. The compound also functions as an acylating agent in various chemical reactions and is employed in the synthesis of specialized polymers and fine chemicals in controlled industrial environments.

Methyl carbonochloridate requires strict safety protocols including full personal protective equipment: chemical-resistant gloves, safety goggles, face shield, and acid-resistant 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 heat sources, sparks, and open flames as it is highly flammable (Flam. Liq. 2).

Methyl carbonochloridate must be stored in tightly sealed, chemically compatible containers in a cool, dry, well-ventilated area away from heat sources and ignition points. Keep strictly away from water, alcohols, and bases as these cause violent reactions. Storage areas should be equipped with appropriate spill containment and emergency equipment. The product should be kept in original containers with proper labeling and restricted access.

Immediate action is critical due to the corrosive nature (Skin Corr. 1B) of methyl carbonochloridate. For skin contact, remove contaminated clothing and flush with copious amounts of water for at least 15 minutes. For eye contact, rinse immediately with water for 15-20 minutes. If inhaled, move to fresh air immediately. Seek immediate medical attention in all cases and provide safety data sheet to medical personnel.

Methyl carbonochloridate disposal must comply with local and national hazardous waste regulations as it is classified as toxic and corrosive waste. Small quantities can be carefully hydrolyzed under controlled conditions by trained personnel, while larger amounts require disposal through licensed hazardous waste contractors. Never dispose of down drains or in regular waste. Consult local environmental authorities for specific disposal requirements and approved facilities.

Methyl carbonochloridate is classified under ADR Class 6.1 (toxic substances), Packing Group I, indicating maximum danger level during transport. Transportation requires specialized hazardous goods packaging, proper labeling with GHS pictograms (GHS02, GHS06, GHS05), and compliance with dangerous goods regulations. Only certified carriers with appropriate permits and emergency response capabilities should handle transportation. Shipping documentation must include proper shipping names and hazard declarations.

Methyl carbonochloridate is subject to comprehensive chemical regulations including REACH registration requirements in Europe and CLP classification showing 'Danger' signal word. The compound requires safety data sheets, proper labeling with multiple hazard pictograms, and compliance with occupational exposure limits. While not currently listed as SVHC, its high toxicity classification (Acute Tox. 2) subjects it to strict handling and reporting requirements under various national chemical safety legislations.

Methyl carbonochloridate is available through OYSI, a specialized European distributor of technical chemicals with expertise in hazardous materials. As a regulated substance requiring professional handling, it is typically supplied to qualified industrial users with appropriate safety infrastructure and permits. OYSI provides comprehensive technical support, proper documentation, and ensures compliance with European chemical regulations for professional customers across Europe.