Product Description
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Merck Chemicals (Shanghai) Co., Ltd. is the subsidiary of the globally operating group Merck KGaA, Darmstadt (Germany) and provides Chinese market with high quality life science and chemical products and services
The contact persons for the specific product groups of the Chemicals businesses are listed on the website of Merck Group in China.
AI Product Description
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Dichloromethane, commonly known as methylene chloride (DCM), is a colorless, volatile liquid with a chloroform-like odor. It serves as one of the most widely used organic solvents in industrial and laboratory settings due to its exceptional ability to dissolve a broad spectrum of organic compounds while remaining immiscible with water. Its primary applications span across pharmaceutical manufacturing, where it acts as an extraction solvent for isolating active ingredients; polymer processing, particularly in paint strippers and adhesive formulations; and chemical synthesis as a reaction medium. Additionally, DCM is utilized in the production of polyurethane foams and as a propellant in aerosol products.
Despite its versatility, handling dichloromethane requires strict adherence to safety protocols due to significant health and environmental hazards. It is toxic if inhaled, swallowed, or absorbed through the skin, potentially causing central nervous system depression, dizziness, nausea, and cardiac sensitization. Long-term exposure has been linked to liver and kidney damage, and it is classified as a probable human carcinogen by major regulatory agencies. Upon heating or combustion, DCM can decompose into highly toxic phosgene gas. Therefore, operations involving this solvent must be conducted in well-ventilated areas or fume hoods equipped with proper exhaust systems. Personnel must wear appropriate personal protective equipment, including chemical-resistant gloves, goggles, and respirators when engineering controls are insufficient. Storage should occur in tightly sealed containers away from heat sources, strong oxidizers, and direct sunlight to prevent pressure buildup or decomposition. Waste disposal must comply with local environmental regulations, as improper release can contaminate soil and groundwater. While DCM remains indispensable in modern chemistry, its use demands rigorous risk management to ensure worker safety and environmental protection.