Ethyl Cinnamate

Ethyl cinnamate has a wide range of uses. It is often used as an important ingredient in the field of fragrances. Because of its unique aroma, fragrant and rich, it has the fragrance of hyacinth and rose, so it is added to daily fragrances, such as perfumes, cosmetics, detergents and other categories, which can increase the elegance and charm of the aroma of the product.
In the food industry, it also has its own shadow. Because of its pleasant aroma, it can be used as a edible fragrance and is used to prepare various food flavors, such as soft drinks, candies, baked goods, etc., which can give the food a unique flavor, improve its taste and quality, and bring a different taste experience to diners.
Furthermore, in the field of pharmaceutical and chemical industry, ethyl cinnamate also has certain uses. It can be used as an intermediate in organic synthesis, participating in the synthesis process of various drugs and fine chemicals, and contributing to pharmaceutical research and development and chemical production. In chemical synthesis reactions, it plays a key role in promoting the development of related industries by virtue of its own chemical structure and properties. In short, ethyl cinnamate is indispensable in many fields such as fragrances, food, pharmaceutical and chemical industries, and is of great significance to improving product quality and promoting industry progress.

The physical properties of ethyl cinnamate are quite important. Looking at its properties, at room temperature, it is a colorless to light yellow oily liquid, like a glittering gold liquid, flowing with a charming luster under the light.
Its aroma is unique and rich, exuding a warm and sweet fragrance like cinnamon, and also contains a little floral charm, just like the smell of spring flowers and warm wood, which is refreshing to smell.
When it comes to the melting point, the melting point is about -18 ° C, which is similar to the low temperature limit hidden in cold nights, while the boiling point is around 271 ° C, which requires high temperature to make it boil and transform. The characteristics of this melting boiling point determine that it is a stable liquid in ordinary environments.
As for the density, it is about 1.045 - 1.050g/cm ³, which is slightly heavier than water. If it is mixed with water, it will quietly settle at the bottom.
In terms of solubility, it is difficult to dissolve in water, just like the difficulty of oil and water; but it can be soluble in organic solvents such as ethanol and ether, just like a wanderer finding a suitable place to live, it can be compatible with these organic solvents and integrate with each other.
In addition, the refractive index of ethyl cinnamate also has its specific value, about 1.559 - 1.563. This property makes it exhibit a unique optical effect in light refraction. Viewed from different angles, light and shadow change, giving it a unique scenery. These many physical properties together outline the unique physical features of ethyl cinnamate.

Ethyl cinnamate (ethyl cinnamate) is an organic compound. It has unique chemical properties and is worth exploring.
Looking at its physical properties, it is a colorless to light yellow oily liquid under normal conditions, with a fragrant smell like fruit and flowers. Its boiling point is quite high, about 271 ° C. Due to the interaction of van der Waals forces and hydrogen bonds between molecules, the molecules are closely maintained, and more energy is required to vaporize them. The melting point is about -4 ° C, and it is liquid at room temperature, with good fluidity.
In terms of its chemical properties, ethyl cinnamate contains two important functional groups: carbon-carbon double bonds and ester groups. The carbon-carbon double bond gives it the characteristics of olefins, and an addition reaction can occur. In case of bromine water, the double bond can be added with it, causing the bromine water to fade. This is a typical addition reaction. It can also hydrogenate with hydrogen under the action of a catalyst and convert it into a saturated compound. This reaction can change the unsaturation of the molecule and affect its physical and chemical properties. The existence of the
ester group allows the hydrolysis of ethyl cinnamate. Under acidic or basic conditions, the ester group can be hydrolyzed with broken bonds. When acidic hydrolysis, cinnamic acid and ethanol are formed. This reaction is a reversible reaction, and conditions need to be controlled to obtain suitable yields. Alkaline hydrolysis is more thorough, resulting in cinnamate and ethanol. In this process, hydroxide ions interact with the ester group to promote the reaction forward. In addition, due to its benzene-containing ring structure, it has certain aromaticity and can undergo substitution reactions on the benzene ring, such as halogenation, nitrification, etc. It has important uses in the field of organic synthesis. It can be used to introduce different functional groups, expand the types of its derivatives, and lay the foundation for the preparation of various organic compounds.

The preparation of ethyl cinnamate (Ethyl Cinnamate) has been through the ages, and various methods have their own wonders. Common ones are as follows:
First, cinnamic acid and ethanol are used as the quality, and the reaction of esterification is carried out by the catalysis of concentrated sulfuric acid. In this method, cinnamic acid and ethanol are mixed in an appropriate proportion, and concentrated sulfuric acid is added dropwise to catalyze the reaction. It is heated to a suitable temperature and refluxed. The reaction mechanism is that the carboxyl group and the hydroxyl group of the alcohol in the acid are catalyzed by concentrated sulfuric acid to remove a molecule of water and form an ester bond to obtain ethyl cinnamate. However, there are also disadvantages in this way. Concentrated sulfuric acid is highly corrosive and has many side reactions, so the purification of the product is slightly difficult. < Br >
Second, cinnamyl chloride and ethanol are used as raw materials. First, cinnamyl chloride is prepared, and it is slowly dripped into ethanol. There is an acid binding agent to remove the hydrogen chloride generated by the reaction. In this process, the acyl group of cinnamyl chloride is combined with the hydroxyl group of ethanol to form ethyl cinnamic acid ester. The reaction in this way is relatively fast and the yield is good. However, the preparation of cinnamyl chloride is slightly more complex, and it is corrosive and irritating, so it needs to be handled with caution.
Third, the phase transfer catalysis method is used. Cinnamic acid and ethanol are used as the starting materials, and the reaction is carried out smoothly with the help of the phase transfer catalyst. The phase transfer catalyst can effectively transfer the reactants between the two phases, promote the rate of reaction, and improve the yield. This way, the conditions are mild, the operation is convenient, and the impact on the environment is small. It is one of the best methods for preparing ethyl cinnamate at present.
All preparation methods have their own advantages and disadvantages. According to the actual situation, such as the availability of raw materials, the cost, and the purity of the product, choose the good one and follow it to achieve the purpose of preparing ethyl cinnamate.

The price range of fuethyl cinnamate in the market often varies due to factors such as quality, source, supply and demand. Generally speaking, if it is an ordinary commercial grade, the price per kilogram is about tens to hundreds of yuan. If its purity is very high, it reaches the experimental or special purpose level, the price is often higher, or it can reach thousands of yuan per kilogram.
There are many factors in the market that affect its price. First, the cost of raw materials. If the price of raw materials such as cinnamic acid and ethanol is high, the price of ethyl cinnamate will also rise. Second, the difficulty of the production process. Complex and cost-intensive processes will lead to higher product prices. Third, the market supply and demand situation. If the demand exceeds the supply, the price will often rise; if the supply exceeds the demand, the price may appear to be falling.
There are also differences in the prices sold by different merchants. Large regular manufacturers, because of their strict product quality control and good brand reputation, their prices may be relatively high. And some small factories or traders, in order to compete, their prices may be slightly lower. However, it should be noted that if the price is too low, the quality may be difficult to guarantee, and there are many impurities in it, which will affect the use effect. Therefore, when buyers consider the price, they should also take into account the quality of the product in order to obtain a suitable choice.