Benzaldehyde, also known as benzaldehyde, is an organic compound formed after the hydrogen of benzene is replaced by an aldehyde group Benzaldehyde is the simplest, and it is also the most commonly used aromatic formaldehyde in industry. At room temperature it is a colorless liquid with a special almond odor.Benzaldehyde is an important raw material for the pharmaceutical, dye, fragrance and resin industries, and can also be used as a solvent, plasticizer and low-temperature lubricant. In the fragrance industry, it is mainly used to mix edible flavors, and a small amount is used in daily chemical flavors and tobacco flavors.