Overview
Malonyl Chloride, also known as propanedioyl dichloride, is an organic compound with significant applications in chemical synthesis. It is a reactive acyl chloride derivative of malonic acid, often used as a building block in pharmaceuticals and agrochemicals. Due to its high reactivity, it must be handled with care, typically under inert conditions to prevent decomposition. Malonyl Chloride is primarily utilized in the synthesis of esters, amides, and other derivatives through nucleophilic substitution reactions. Its ability to introduce the malonyl group makes it valuable in the production of active pharmaceutical ingredients (APIs) and specialty chemicals.
Physical and Chemical Properties
Malonyl Chloride is a colorless to pale yellow liquid with a pungent odor. It has a molecular weight of 140.95 g/mol and a density of 1.45 g/cm³. The compound is highly reactive, especially with water, alcohols, and amines, leading to the release of hydrogen chloride gas. Its boiling point ranges between 90-92 °C at reduced pressure (20 mmHg). The compound is soluble in common organic solvents like ether, benzene, and dichloromethane but reacts violently with water. Due to its corrosive nature, it requires careful handling and storage away from moisture and incompatible substances.
Main Applications
Malonyl Chloride is widely employed in organic synthesis, particularly in the pharmaceutical industry. It serves as a key intermediate for producing malonate esters and amides, which are precursors to various drugs. For example, it is used in the synthesis of barbiturates and other central nervous system (CNS) drugs. In agrochemical manufacturing, Malonyl Chloride is utilized to create herbicides and pesticides. Its reactivity allows for the efficient introduction of the malonyl group into target molecules, enhancing the efficacy of the final products. Additionally, it finds use in specialty chemicals and research laboratories for developing novel compounds.
Safety and Storage
Due to its corrosive and moisture-sensitive nature, Malonyl Chloride requires stringent safety measures. It can cause severe skin burns, eye damage, and respiratory irritation upon exposure. Proper personal protective equipment (PPE), including gloves, goggles, and lab coats, must be worn during handling. Storage should be in a cool, dry, well-ventilated area, preferably under an inert atmosphere to prevent degradation. Containers must be tightly sealed and labeled with hazard warnings. In case of spills, neutralize with a suitable absorbent and dispose of according to local regulations. Emergency showers and eye wash stations should be readily accessible in areas where the compound is used.
B2B Procurement Guide
When procuring Malonyl Chloride, B2B buyers should prioritize supplier reliability and product quality. Verify the CAS number (1663-67-8) and request certificates of analysis (CoA) to ensure purity and consistency. Packaging should be airtight, with options for small-scale (bottles) or bulk (drums) quantities. Consider suppliers who offer technical support and safety data sheets (SDS). Pricing varies based on purity and order volume, typically ranging from $50-$100 per kg. Evaluate logistics options to ensure safe transportation, especially for international shipments. Establish long-term relationships with reputable suppliers to secure stable pricing and availability.
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