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[Chemical Knowledge]：Properties and uses of m-hydroxybenzaldehyde

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m-Hydroxybenzaldehyde (m-Hydroxybenzaldehyde, also known as 3-hydroxybenzaldehyde) is an important organic compound, which is widely used in the field of chemical production raw materials. It has unique physical and chemical properties and can be used to synthesize a variety of functional materials and drugs. This article will detail the properties and uses of m-hydroxybenzaldehyde.

1. m-Hydroxybenzaldehyde Properties

1. Physical Properties
m-Hydroxybenzaldehyde is a colorless to pale yellow crystalline solid with a strong pungent odor. It is soluble in hot water, ethanol, ether and other organic solvents, slightly soluble in cold water. The melting point is about 122-125°C and the boiling point is 245°C.

2. chemical properties of
hydroxybenzaldehyde molecules in the aldehyde group and phenolic hydroxyl so that it has a lively chemical properties, can occur a variety of reactions, such as aldol condensation, aldol condensation, Claisen ester condensation. In addition, it can also be nucleophilic addition reaction with amine compounds to form Schiff base, and metal ions to form complexes.

2. the use of hydroxy benzaldehyde

1. synthetic spices and flavor
hydroxy benzaldehyde can be used to synthesize a variety of spices and flavors, such as vanillin, vanillic acid, widely used in food, beverage and cosmetics and other industries.

2. synthesis of pharmaceutical intermediates
hydroxybenzaldehyde can be used as pharmaceutical intermediates for the synthesis of antibacterial drugs, anti-inflammatory drugs, anticancer drugs and other drugs. For example, it can be used to synthesize the drug aspirin for the treatment of cardiovascular diseases.

3. Synthesis of fluorescent dyes
m-hydroxybenzaldehyde can be used as a precursor of fluorescent dyes, and by reacting with other compounds, fluorescent dyes with excellent optical properties are synthesized, which are widely used in biological fluorescent labeling, fluorescent probes and other fields.

4. Synthesis of metal complexes
m-hydroxybenzaldehyde can form stable complexes with metal ions. These complexes have good catalytic properties, optical properties and magnetic properties, and can be used in the fields of catalysts, optical materials and magnetic materials.

In conclusion, m-hydroxybenzaldehyde, as an important organic compound, has a wide range of uses in the field of chemical production raw materials. The continuous research and development of its nature and use will bring more possibilities for the development of the chemical industry and the advancement of technology.

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