Triacetin（TR-01-F0102）

Triacetin (TR-01 - F0102) has a wide range of uses. In the field of medicine, it is often used as a drug excipient. Because of its good solubility and stability, it can help the drug to disperse evenly, increase the stability of the drug, and facilitate the release and absorption of the drug, so it is mostly relied on by the preparation of the drug. In the food industry, it can be used as a fragrance solvent. Because of its mild smell, it does not disturb the original flavor of the fragrance, which can better integrate the fragrance into the food system, increase the emission and durability of food aroma, and is used in the production of candies, beverages, etc. In the field of daily chemicals, it is also useful. Can be used in cosmetics, skin care products, as a humectant and plasticizer. It can make the texture of the product smoother, improve the feeling of use, and help the active ingredients penetrate the skin. In the plastics industry, it is one of the plasticizers. Added to some plastic products, it can improve its flexibility and plasticity, make plastic products easier to process and shape, and enhance its physical properties, making plastic products durable. In addition, in the ink and coating industries, triacetin is also used. It can be used as a solvent and co-solvent to help uniformly disperse resins, pigments, etc., to improve the leveling and gloss of inks and coatings, so that printing and coating effects are better.

First appearance, triacetin is a colorless and transparent oily liquid, clear and clear, like jade liquid, without impurities, and it is pleasing to watch. Second and its smell, with a weak and pleasant aroma, non-pungent smell, just like the faint fragrance of flowers, slowly dissipating in the air, giving people a sense of comfort. As for solubility, triacetin can be miscible with organic solvents such as ethanol, ether, and chloroform. However, the solubility in water is limited, only slightly soluble, just like a drop of ink in water, which can only make the water slightly dyed. Its boiling point is quite high, about 258-259 ° C, and a higher temperature is required to boil it into steam. This property allows it to maintain liquid stability within a certain temperature range. The melting point is lower, about -78 ° C, which means that it will solidify when the temperature is extremely low. Under normal temperature, it is a flowing liquid. In terms of density, it is about 1.16g/cm ³, which is slightly higher than the density of water. Therefore, if it is placed in the same place as water, it will sink to the bottom of the water. In addition, the refractive index of triacetin also has its specific value, about 1.429-1.431. This property is related to the refraction of light when passing through, which is of great significance in optical related applications. All these physical properties together constitute the unique characteristics of triacetin, which has its uses in many fields, such as as as solvents, or for fragrance preparation, etc., all depend on its unique physical characteristics.

Triacetin (TR - 01 - F0102) is an organic compound. Its properties are colorless, transparent and aromatic oily liquid, with a slightly sweet and then bitter taste. In terms of solubility, it can be miscible with organic solvents such as ethanol, ethyl ether, chloroform and benzene, but its solubility in water is limited. This is because although the molecular structure contains polar ester groups, its carbon chain is affected by the large acetyl group, resulting in limited hydrophilicity. In terms of stability, triacetin is quite stable at room temperature and pressure. When exposed to open flames and hot topics, it can burn because its molecules contain hydrocarbons and are flammable. And under acid or alkali catalysis conditions, hydrolysis will occur. This property is derived from the chemical activity of ester groups. Its melting point is about -78 ° C, and its boiling point is 258-259 ° C. The lower melting point makes it liquid at room temperature, and the higher boiling point indicates that it has a certain thermal stability, and it will only vaporize at higher temperatures. The relative density is about 1.155 - 1.160 (20 ° C), which is slightly higher than that of water. Due to the arrangement of atoms and structures in the molecule, the density is different from that of water. The refractive index is about 1.429 - 1.431, reflecting its ability to refract light, which is closely related to the molecular structure. The specific structure causes the specific refraction effect of light when passing through.

1) Feeding: The mass ratio of acetic acid to glycerol is about 3.2:1. If the acid ratio is too high, the temperature of the reaction system will be low, resulting in a slow reaction rate. If the acid ratio is too low, the reaction rate will be fast, the by-product reaction will increase, and the product color will become darker. The feed ratio of catalysts and dehydrating agents varies depending on their varieties. Start heating after the feeding is completed. 2) Esterification: The water generated by the reaction of the water-carrying agent at the top of the esterification tower forms an azeotrope. After condensation by the condenser, the layers are separated. The water-carrying agent on the upper layer still flows back to the top of the tower, and the water layer on the lower layer is continuously removed. When the speed of generating water is slow, the esterification ends. 3) Pre-deacidification: Control the temperature to evaporate most of the excess acetic acid, and pull the vacuum if necessary. 4) Acylation: Add the fore fraction pulled out of the previous batch of high deacidification and the low-boiling product pulled out of the refining kettle, add acetic anhydride at 100~120℃ for acylation, and heat at the same time. 5) High deacidification: After the acylation is completed, add alkali for neutralization (no neutralization is required when H3PO4 is used as a catalyst). Heat and open the vacuum for deacidification. The concentration of the small amount of acid removed in the initial stage is very high and can be directly used for feeding the esterification section. The front fraction removed later can be fed before the next batch of acylation section starts. When the acidity of the effluent is less than 1%, it is collected as a crude product. The above process operations can be completed in the same reactor or in different reactors.

I have heard that you are inquiring about the market price range of Triacetin (TR - 01 - F0102). However, the price of this product often varies according to time, place, quality and supply and demand conditions, so it is difficult to determine its fixed number. In the past, the price of Triacetin fluctuated within a certain range according to the quality and quantity of the market. If its quality and quantity are abundant, and there are many buyers, the price may be slightly higher; if the quality and quantity are small, and there are few applicants, the price will be lower. In normal times, the price per kilogram may be between tens and hundreds of yuan. If the purchase volume is large, you may get a little discount, and the price may be reduced to a lower area; and when it is scarce, the price may also rise sharply, far exceeding the usual number. And the market in various places, due to the difference in transportation, taxes, and operating costs, the price is also different. In a prosperous city, the price is higher, and the price is more expensive in a remote place. To know the exact price, welcome to contact us for inquiries about the products you are interested in, and our experts will reply you within 24 hours!