Overview
Valeric Anhydride, also known as pentanoic anhydride, is an organic chemical compound primarily used as an acylating agent in organic synthesis. It is derived from valeric acid and is characterized by its reactivity with nucleophiles such as alcohols and amines. The compound is commonly employed in the production of esters, amides, and other derivatives. Its industrial relevance stems from its role in manufacturing pharmaceuticals, fragrances, and specialty chemicals. Due to its reactive nature, it must be handled with care to avoid unintended reactions or hazards.
Physical and Chemical Properties
Valeric Anhydride is a colorless to pale yellow liquid with a characteristic odor. It has a molecular weight of 186.25 g/mol and a density of approximately 0.93-0.94 g/cm³. The compound hydrolyzes in water, releasing valeric acid, and is soluble in common organic solvents like ether and acetone. It has a boiling point around 220-225°C and a melting point near -70°C. As an anhydride, it reacts vigorously with water, alcohols, and amines, making it a versatile reagent in synthetic chemistry. Its flammability and corrosive nature necessitate careful storage and handling.
Main Applications
Valeric Anhydride is widely used in organic synthesis to introduce valeryl groups into molecules. It serves as a key intermediate in the production of pharmaceuticals, including active pharmaceutical ingredients (APIs) and prodrugs. The fragrance industry utilizes it to create esters for perfumes and flavorings. Additionally, it is employed in the synthesis of polymers and specialty chemicals. Its reactivity makes it valuable for laboratory-scale reactions and industrial processes where acylations are required. However, its applications are limited by its sensitivity to moisture.
Safety and Storage
Due to its corrosive and reactive properties, Valeric Anhydride requires strict safety measures. It can cause severe skin and eye irritation, and inhalation of vapors may lead to respiratory distress. Personal protective equipment (PPE), including gloves, goggles, and lab coats, is essential during handling. Storage should be in a cool, dry, well-ventilated area, away from moisture and incompatible substances like strong bases and oxidizers. Containers must be tightly sealed to prevent hydrolysis. Spills should be neutralized with appropriate absorbents and disposed of according to local regulations.
B2B Procurement Guide
When procuring Valeric Anhydride, B2B buyers should prioritize suppliers with verified certifications and a track record of quality. Key considerations include CAS number confirmation, purity levels (typically 95-99%), and packaging options (e.g., drums or custom quantities). Bulk orders often reduce costs, but buyers should assess storage capabilities to prevent degradation. Request safety data sheets (SDS) and technical specifications to ensure compliance with industry standards. Reliable suppliers may offer testing samples to validate product quality before large-scale purchases.
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