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[Chemical Knowledge]：Properties and uses of isononanoic acid

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Isononanoic acid is an important organic chemical raw material, which is widely used in chemical, pharmaceutical, pesticide and other fields. It has special properties and uses, and is of great significance to the development of raw materials for chemical production.

1. the nature of isononanoic acid

isononanoic acid is a saturated fatty acid, molecular formula C9H18O2, structural formula CH3(CH2)6COOH. It is a colorless or yellowish transparent liquid with a characteristic odor. Isononanoic acid is insoluble in water, but soluble in ethanol, ether and other organic solvents. It has a melting point of -7.5°C, a boiling point of 225°C and a density of 0.866g/cm3. Isononanoic acid has strong acidity and corrosion, can react with alkali, metal and so on.

2. the use of isononanoic acid

1. plastic plasticizer
isononanoic acid can be used as a plastic plasticizer, can improve the processing performance and the use of plastic performance. It has good compatibility with plastics such as polyvinyl chloride, which can reduce the glass transition temperature of plastics, increase the flexibility and ductility of plastics, and improve the processing performance of plastics. At the same time, isononanoic acid can also improve the heat resistance, cold resistance and weather resistance of plastics, and extend the service life of plastics.

2. Surfactant
isononanoic acid can be used as a surfactant raw material for the production of detergents, emulsifiers, etc. It reacts with alcohols to generate ester surfactants, which have good foaming, wetting and emulsifying properties, and can be used for cleaning clothes, tableware, etc.

3. pharmaceutical intermediates
isononanoic acid can be used as pharmaceutical intermediates for the production of some drugs. For example, it can react with alcohols to form esters, and then further synthesize some compounds with pharmaceutical activity.

4. lubricating oil additives
isononanoic acid can be used as lubricating oil additives, can improve the performance of lubricating oil. It can form a chemical adsorption film with the metal surface, improve the wear resistance and extreme pressure of lubricating oil, and extend the service life of mechanical equipment.

In conclusion, isononanoic acid, as an important organic chemical raw material, has broad application prospects in the field of chemical production raw materials.

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