37 results about "Ethanol / Salicylic Acid" patented technology

The invention belongs to the field of chemical engineering, and particularly discloses a synthetic method of ethyl salicylate with high purity and conforming to drug use. The method comprises the steps of using sulfuric acid for catalytic synthesis of the ethyl salicylate, washing a product and purifying the product; a mixture of ethanol and water is collected while ethanol with high concentration is added to a reaction system in the synthesis process, forward esterification reaction can be effectively promoted, and the improvement of the reaction yield is facilitated; the obtained ethyl salicylate product is high in purity, no unknown impurities are introduced, the requirements of the drug use are met, the quality is guaranteed from raw materials, and the unknown risk of the product during clinical use is reduced.

The invention discloses a synthesis process of carbasalate calcium. The production process is as follows: add a certain amount of ethanol, salicylic acid, and acetic anhydride into a three-necked flask, start stirring, add calcium carbonate in batches, and heat up to a certain level. After a period of reaction, the temperature is lowered to a certain temperature, and then a certain amount of water, ethanolamine and urea are added, and the temperature is kept for 2 hours. After the reaction is completed, the temperature is lowered, centrifuged, rinsed, and dried to obtain high-quality carbasalate calcium.

The invention discloses a fiber penetrating swelling agent which comprises the compositions in weight portion: 0.00016 to 0.0006 portion of laurocapram, 1 to 5 portions of N-methyl pyrrolidone, 5 to 10 portions of diacetone alcohol, 5 to 15 portions of ethyl salicylate, and 5 to 10 portions of isopropyl salicylate. The invention also discloses a method for dyeing by the fiber penetrating swelling agent, comprising the following steps that: a reducing agent and sodium hydrate are used for reducing the dye by a vatting method; the weight ratio of a reducing solution to the dye is 37.5: 0.8 to 2.0; a leveling agent and the fiber penetrating swelling agent are added to dye or a buffering agent is added to adjust the pH value and is dyed by vat acid, the temperature is reduced and the mixtureis washed; the mixture is subjected to oxidizing to develop color, fixing, reducing temperature and washing; the fresh water bath is performed, the fiber penetrating swelling agent is reduced and washed, and the temperature is reduced and the fiber penetrating swelling agent is produced. The fiber penetrating swelling agent ensures that the dye insoluble in water is effectively moistened and penetrated, and the fiber crystallizing area is effectively swelled to receive the dye; the fiber penetrating swelling agent ensures that a suspended solid is dyed evenly, has good homochromatism, improves the degree of dyeing, and solves the 'white core' problem of fiber.

The invention belongs to the field of food safety and standard product synthesis, and discloses a deuterium-labeled D 3 ‑Synthetic method of salbutamol. In this method, ethyl salicylate is used as a raw material, and deuterium-labeled D 3 ‑Albuterol. The method has the advantages of simple operation, reasonable reaction route, simple processing method, easy purification of the product, a chemical purity of more than 98%, and an isotope abundance of more than 98%, and can be used for clenbuterol residue detection in the field of food safety.

The invention discloses a formula of a foot-washing liquid, which comprises the following components in percentage by weight: 1-5% of lauryl sodium sulfate, 2-8% of cocamidopropyl betaine, 1-3% of ethyl salicylate, 1-5% of glycerol, 1-5% of white oil, 0.1-1% of Chinese wolfberry extract, 0.1-1% of ginger extract, 0.1-1% of rutin and the balance of deionized water. The foot-washing liquid adopting the formula disclosed by the invention has a good decontamination effect, can be used for moistening the foot skin, and has deodorization and sterilization functions.