What Is Benzaldehyde?
Benzaldehyde, with the chemical formula C7H6O, is an aromatic aldehyde found naturally. It is the primary component of the essential oils from peach and apricot kernels, known for its almond-like fragrance.
This compound is prone to oxidation, transforming into benzoic acid upon exposure to air. Classified as a hazardous substance, Class 4, flammable liquid, petroleum No. 2, hazardous rank III under various regulations, it poses a flammability risk.
Uses of Benzaldehyde
Benzaldehyde’s almond scent makes it popular in soaps and cosmetics. It is industrially produced from benzal chloride, derived from toluene chlorination, making it cost-effective for widespread use. Beyond fragrances, its reactivity as an aldehyde makes it valuable in synthesizing dyes, pharmaceuticals, and other chemicals.
Properties of Benzaldehyde
With a molecular weight of 106.12 and CAS number 100-52-7, benzaldehyde is a colorless to light yellowish-brown liquid with a distinctive odor. It has a melting point of -26°C, a boiling point of 180°C, and a flash point of 62°C. Its vapor pressure is 150 Pa, and it has a density of 1.041-1.050 g/mL.
Chemical Properties
Highly soluble in ethanol and diethyl ether, it barely dissolves in water. It’s stable under normal conditions but sensitive to light. When stored, it should be kept away from heat, light, and oxidizing agents to prevent hazardous conditions.
Other Information on Benzaldehyde
Safety Measures
Benzaldehyde can irritate eyes and respiratory systems and is harmful if ingested. Long-term exposure may affect the central nervous system, blood, liver, and lungs, and it is toxic to aquatic life. Immediate medical attention is advised if exposure occurs.
Handling and Storage
Appropriate protective gear and ventilation are crucial when handling benzaldehyde. Storage should be in a cool, ventilated area away from light and oxidizers. Special precautions, like a yellow card, are necessary for transportation to avoid contamination with food or feed.
Disposal Guidelines
Disposal should minimize hazard levels through detoxification and neutralization, adhering to relevant laws and regulations. Containers must be thoroughly emptied and properly disposed of or recycled.