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490 results about "Disodium Edetate" patented technology

Environment-friendly air conditioner detergent and preparation method thereof

The invention belongs to the field of chemical detergents, and particularly relates to an environment-friendly air conditioner detergent and a preparation method thereof. Raw materials of the environment-friendly air conditioner detergent include sodium metasilicate, sodium lauryl sulfate, disodium edetate, sulphamic acid, sodium chloride, formic acid, ethanol, dibromo-3-nitrilo-propionyl, ethylene glycol polyoxyethylene ether, carboxymethyl cellulose, 2-bromo-5-chlorothiophene and purified water. According to the air conditioner detergent, a weak-acidity solution formed by sulphamic acid and formic acid is matched with substances such as carboxymethyl cellulose and sodium lauryl sulfate, so the air conditioner detergent is improved in decontamination efficiency and free of pungent smells; the chemical substances such as disodium edetate can form a chelate layer on the surface of a metal member so as to play an anti-corrosive protective effect; besides, the compounds such as dibromo-3-nitrilo-propionyl have a sterilization function, so the air conditioner detergent also has a sterilization effect and is applicable to washing and sterilization of automobiles or domestic air conditioners, simple to operate and capable of being used for cleaning the air conditioners by one step.
Owner:周莉莉

Famotidine injection and preparation method thereof

InactiveCN101716136ADecrease in the marked amount of feedingHigh yieldOrganic active ingredientsDigestive systemDisodium EdetateUltraviolet lights
The invention discloses a preparation method of a famotidine injection. 1000ml of injection contains the following raw materials: 20.0g of famotidine, 3.5g of aspartic acid, 0.2g of natrium adetate, 0.5g of medicinal carbon and the balance of injection water. The preparation method comprises the following steps: (1) adding fresh injection water which accounts for 80% of the preparation liquid to aspartic acid and natrium adetate and stirring to be thoroughly dissolved; (2) adding a formula amount of medicinal carbon and allowing to stand to absorb for 20 minutes; (3) filtering, feeding 102% of famotidine and stirring to be dissolved; (4) adjusting a pH value to 5.2-5.4 with 10% aspartic acid solution, adding injection water to a full amount and uniformly stirring; (5) sequentially filtering by a filter element of 0.45 microns and a filter element of 0.22 microns until clarity is qualified, obtaining a half finished product of famotidine injection and adopting an ultraviolet light-visible light photometry to control the quality of the half finished product; (6) finally, filtering the half finished product by a filter membrane of 0.22 microns after the half finished product is detected to be qualified, filling 2ml of nitrogen and encapsulating; and (7) sterilizing in flowing steam at 100 DEG C for 30 minutes, detecting leakage and lamps, airing, printing characters and packaging to obtain the famotidine injection.
Owner:HENAN FUREN HUAIQINGTANG PHARMA

Temperature-resistant and salt-resistant oil displacing polymer containing nano particles

The invention discloses a temperature-resistant and salt-resistant oil displacing polymer containing nano particles. A preparation method of the polymer comprises the following steps that 1, the surface of nanosilicon dioxide is inoculated with amidogen, and modified nanosilicon dioxide is obtained; 2, modified nanosilicon dioxide, water-soluble monomers and water are mixed, the pH of the mixed system is adjusted to range from 4 to 8, nanosilicon dioxide is completely dispersed in the water, disodium edetate dehydrate, ferrous sulfate and tetramethylethylenediamine are added into the mixed system obtained after the pH is adjusted, then azobis(isobutylamidine hydrochloride), ammonium persulfate and hydrogen peroxide are added, the reaction I is carried out in the nitrogen atmosphere, the reaction II is carried out after temperature rise, the pH of the reaction product of the reaction II is adjusted to range from 8 to 9, constant-temperature ageing is carried out, and the polymer can be obtained after drying and smashing are carried out. The dispersing performance and high temperature stability of modified nanosilicon dioxide are utilized, through interaction between nanosilicon dioxide and the polymer, the rigidity of polymer molecules is improved, a network structure among the polymer molecules is formed, and excellent temperature resisting, salt resisting and ageing resisting performance and the like are generated.
Owner:CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +1

Adrenaline hydrochloride injection and preparation process thereof

The invention discloses an adrenaline hydrochloride injection and a preparation process thereof. The preparation process comprises the following steps: (1) adding water for injection in a container and inserting CO2 for 15 min, wherein, the volume of the water is 90% of the total volume, and the temperature of the water is less than 30 DEG C; (2) dissolving sodium chloride in proper amount of water for injection having a temperature of below 30 DEG C; (3) dissolving disodium edetate with boiled water for injection; (4) dissolving sodium chloride solution, disodium edetate solution, sodium pyrosulfite and epinephrine respectively in water for injection; (5) measuring the pH value of the solution, regulating the pH value to 3.6-4.0 with 1 mol/L hydrochloric acid, adding water for injection to reach the total amount, and uniformly stirring; (6) filtering; and (7) carrying out aseptic filling and sealing, and inserting N2 in ampoules when filling and sealing; or carrying out filling and sealing according to operating procedures of filling and sealing, inserting N2 in the ampoules when filling and sealing , and carrying out disinfection for 30 min at the temperature of 100 DEG C. The process realizes aseptic production, and products produced by the preparation process satisfy the national medicine quality standards.
Owner:上海禾丰制药有限公司

Process for preparing pantoprazole sodium for injection

The invention relates to a preparation process (preparation method) for pantoprazole sodium for injection, overcomes the defect of the traditional preparation process for the pantoprazole sodium for injection, and provides a preparation process with low cost, high yield and more stable finished product quality. The process comprises the following steps of: (1) feeding materials according to 100 percent of formula quantity, adding mannitol into injection water in an amount which is about 15 percent of preparation quantity, dissolving the materials with stirring, adding medicinal carbon in an amount which is 0.2 percent (weight/volume) of preparation quantity into the solution, boiling the solution for 30 minutes, removing carbon and filtering the solution, cooling the filtered solution to between 10 and 20 DEG C, and introducing nitrogen (the pressure of the nitrogen is 0.3 to 0.5MPa) into the solution for later use; (2) introducing the nitrogen (the pressure of the nitrogen is 0.3 to 0.5MPa) into the 10-20 DEG C injection water in an amount which is about 60 percent of preparation quantity, adding the medicinal carbon in an amount which is 0.1 percent (weight/volume) of preparation quantity into the solution, stirring the solution uniformly, standing the solution for 20 minutes, removing carbon and filtering the solution; and (3) mixing the filtered solution, introducing the nitrogen (the pressure of the nitrogen is 0.3 to 0.5MPa) into the solution for protecting, adjusting the pH value of the solution to between 10.0 and 10.8 by using 10 percent sodium hydroxide solution, adding 10-20 DEG C injection water to the preparation quantity, stirring the solution uniformly, retesting the pH value which should be between 10.0 and 10.8, filtering the solution by using filters with a 0.45mum filter element and a 0.22mum filter element respectively, and filling the product after the submitted semi-finished products are qualified.
Owner:HENAN FUREN HUAIQINGTANG PHARMA
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