Benzaldehyde, also known as benzoin aldehyde, is an organic compound formed by replacing the hydrogen of benzene with an aldehyde group. Benzaldehyde is the simplest and most commonly used aromatic aldehyde in industry. At room temperature, it is a colorless liquid with a unique almond odor. Benzaldehyde is a compound formed by directly connecting an aldehyde group with a phenyl group. Due to its aroma similar to bitter almonds, it was once called bitter almond oil.The chemical properties of benzaldehyde are similar to those of fatty aldehydes, but there are also differences. Benzaldehyde cannot reduce Fehling reagent; When using the reagents used for reducing fatty aldehydes to reduce benzaldehyde, in addition to the main product benzyl alcohol, some tetrasubstituted adjacent diol compounds and isophenylethylene glycol are also produced. In the presence of potassium cyanide, two molecules of benzaldehyde generate benzoin by donating and receiving hydrogen atoms. Benzaldehyde can also undergo electrophilic substitution reactions on aromatic nuclei, mainly producing meta substituted products, such as meta nitrobenzaldehyde, which is the main product during nitration. Currently, benzaldehyde is mainly prepared from toluene through different pathways.
Application: Benzaldehyde is an important raw material for the pharmaceutical, dye, fragrance, and resin industries. It has a wide range of uses, such as being used as a solvent, plasticizer, and low-temperature lubricant, and plays an important role in the pharmaceutical, dye, fragrance, and resin industries.
1. Spice industry application: Mainly used to mix food essence, a small amount of it is used in daily chemical essence and tobacco essence, and can be used as a special head fragrance, which can be used in lilac, white orchid, jasmine and other flower fragrance formulations in trace.
2. Application in the food industry: As a food spice temporarily allowed by GB2760-1996, Chemicalbook is mainly used to prepare almond, cherry, peach and other essence, and can also be used as a flavoring agent for canned sweet cherries.
3. Agricultural application: It is an intermediate of herbicide Wild Swallow Wasp and plant growth regulator Anti Down Amine, used in the agricultural field.
4. Chemical raw materials: Important chemical raw materials used for the preparation of cinnamaldehyde, lauric acid, phenylacetaldehyde, benzyl benzoate, etc.
5. Laboratory use: Used to determine reagents such as ozone, phenols, alkaloids, and methylene groups located next to carboxyl groups. In summary, benzaldehyde has important applications in multiple fields and is a multifunctional compound.
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