37 results about "Ethylenediamine tetra-acetate" patented technology

The invention provides an environment-friendly rustproof cleaning agent prepared from the following raw materials in percentage by weight: 2-5% of one or mixture of multiple of phosphoric acid or phosphate, 2-5% of one or mixture of multiple of boric acid or borate, 0-5% of strong base, 0.5-1% of anionic surface active agent, 0.5-1% of nonionic surface active agent, 0.5-1% of one or more than one of edetic acid or ethylenediamine tetraacetates and the balance of water. According to the invention, the raw materials are added into water in sequence to obtain the rustproof cleaning agent. The environment-friendly rustproof cleaning agent provided by the invention is safe and environment-friendly and has good dustproof cleaning capability.

The invention discloses a reverse osmosis cleaning agent for seawater desalination equipment, a preparation method and a use method, and belongs to the technical field of seawater desalination. The reverse osmosis cleaning agent comprises an acidic agent A and a multifunctional agent B; wherein the acidic agent A is composed of citric acid, hydrochloric acid, formic acid, nitrilotriacetic acid trisodium salt and deionized water, and the multifunctional agent B is composed of inorganic base, ethylenediamine tetraacetic acid salt, polyethyleneimine, alcohol amine organic base and the like; According to the invention, the acidic agent A and the multifunctional agent B are cooperatively used for cleaning the reverse osmosis membrane, during use, the multifunctional agent B is firstly used for removing various organic impurities, micro-plastics and acidic substances in the reverse osmosis membrane, then the multifunctional agent B in the reverse osmosis membrane is washed away through water washing, and then the acidic agent A is used for removing various metal salts, metal ions and metal oxides. Finally, thereverse osmosis membrane is washed with a multifunctional agent B to fully remove a small amount of organic impurities, and meanwhile, a certain repairing effect on the reverse osmosis membrane is achieved.

The invention relates to a low-odor scratch-resistant polypropylene composite material, which is prepared from the following raw materials by mass: 44.6-96.6% of polypropylene, 0-40% of talcum powder,0.4-4% of an antioxidant, 1-5% of a deodorant 1, 1-5% of a deodorant 2 and 1-5% of a scratch-resistant aid, wherein the deodorant 1 is one or a plurality of materials selected from water, hexamethyldisilane, hexamethyldisiloxane, triethylsilanol and octamethyltrisiloxane, and the deodorant 2 is mesoporous silica or a 13X type zeolite molecular sieve loading at least one selected from ethylenediamine tetraacetic acid salt, methylene triamine pentamethylene phosphoric acid, ethylenediamine tetramethylene phosphoric acid and 2,4-dinitrophenylhydrazine. According to the invention, the product hasexcellent low-odor and excellent scratch resistance, reduces the antagonism among odor, diffusivity and scratch resistance, and finally realizes the balance of odor, diffusivity and scratch resistance of the product.

The invention discloses a cyanide-free silver plating solution and a silver plating layer and a preparation method thereof. The cyanide-free silver plating solution provided by the invention comprisessilver nitrate, a multiple complexing agent, conductive salt, a buffering agent and an additive, wherein the multiple complexing agent takes triethylene tetramine or/and the soluble salt of the triethylene tetramine as a main complexing agent, takes one or more of triethylenetetramine hexaacetic acid or triethylenetetraamine hexaacetic acid salt, ethylene diamine tetraacetic acid or ethylenediaminetetraacetic acid salt, citric acid or citrate as an auxiliary complexing agent; the concentration of the silver nitrate is 0.1- 0.7mol/L, the concentration ratio of the main complexing agent to thesilver nitrate is 1- 6:1, the concentration of the auxiliary complexing agent is 0.05- 1mol/L, the concentration of conductive salt is 0.2- 1.2mol/L, and the bufferring agent is used for adjusting thepH value of the cyanide-free silver plating solution to 2- 7; the additive is a rare earth salt or a mixture of the rare earth salt and benzotriazole or/and surfactant, the concentration of the additive is 0.0001- 0.035mol/L. The cyanide-free silver plating solution provided by the invention has good stability, and the prepared cyanide-free silver plating layer has a dense structure.

The invention provides an alkaline cleaner special for a reverse osmosis membrane. The alkaline cleaner special for the reverse osmosis membrane comprises nitrilotriacetic acid salt, complexonate, hydroxyethyl ethylene diamine, (2-Hydroxyethyl) ethylenediaminetriacetic acid salt, alcamines, a dispersant, a pH conditioning agent and deionized water, wherein the mass ratio of nitrilotriacetic acid salt, complexonate, hydroxyethyl ethylene diamine, (2-Hydroxyethyl) ethylenediaminetriacetic acid salt, alcamines, the dispersant to the pH conditioning agent is 1-10 to 2-10 to 2-15 to 10-40 to 10-30 to 2-10 and the balance is deionized water. The invention further provides an application method for the alkalinity cleaning agent special for the reverse osmosis membrane. The alkaline cleaner is convenient to use and excellent in effect, and causes no harm to membrane components.

An injection of compound xylazine for the anesthesia of wild animal is prepared through dissolving xylazine and EDTA in distilled water, adding the solution of dihydroetorphine hydrochloride, stirring, filling it in ampules, and sterilizing.

The invention relates to a pepsinogen I, pepsinogen II and gastrin-17 composite quality control product. The composite quality control material comprises a protein preserving solution, and pepsinogenI, pepsinogen II and gastrin-17 which are dissolved in the protein preserving solution, wherein the total volume of the protein preserving solution is calculated; wherein the protein preserving solution contains 0.8 to 3.5 g/L of AEP-HBC, 0.002 to 0.006 g/L of fibrinogen, 0.05 to 0.15 g/L of gelatin, 2 to 8 g/L of trehalose, 0.05 to 0.25 g/L of tetrapolyphosphate, 5-25 mmol/L of 2-(N-morpholine) ethanesulfonic acid, 0.5-4 g/L of ethylenediaminetetraacetic acid or ethylenediaminetetraacetic acid salt, 1-20 mmol/L of cysteine, methionine or arginine and 0.05-0.10% of a preservative,. The pepsinogen I, pepsinogen II and gastrin-17 composite quality control product is initiated at home, and can be stably stored for 14 months at the temperature of 2-8 DEG C. The invention further discloses a preparation method of the pepsinogen I, pepsinogen II and gastrin-17 composite quality control product. The invention also provides a detection kit containing the composite quality control product, andthe detection kit can be used for clinical detection of gastric functions.

The invention relates to a citric acid discoloration incrustation cleaning agent and a preparation method and application thereof. The cleaning agent is prepared from the following components in massconcentration: 15%-25% of organic acid, 1.6%-2.0% of ammonium salt, 0.03%-0.05% of ethylenediamine tetraacetic acid salt, 0.003%-0.005% of a surfactant, 0.4%-0.7% of a corrosion inhibitor and 0.00003%-0.00005% of an indicator. The cleaning agent is applied to removing incrustation of boilers, cooling towers or circulating water pipelines, and when effective components of the cleaning agent are consumed, the cleaning agent can be turned into purple from orange to indicate that the cleaning agent fails. Compared with the cleaning agents in the prior art, the cleaning agent has the advantages oflow corrosion to equipment, high cleaning capacity, safety, no pollution, low maintenance cost and the like.

The invention relates to a nelarabine injection, which is characterized by consisting of nelarabine, EDTA or EDTA salt, sodium chloride, and water for injection, wherein the nelarabine accounts for 0.25 to 0.625 percent of the total weight of the injection, the EDTA or the EDTA salt accounts for 0.001 to 0.01 percent of the total weight of the injection, the content of the sodium chloride is 0 or the dose is used for regulating the osmotic pressure, and the balance is the water for injection. The preparing process comprises the following steps: taking 80 percent of the water for injection, adding raw supplementary materials into the water for injection, stirring the mixture to fully dissolve the raw supplementary materials and mixing the mixture evenly, adjusting the pH value, adding 0.02 percent of needle activated carbon into the mixture, keeping the water temperature at 70 DEG C, stirring the mixture for 30 minutes, filtering the mixture to remove the activated carbon when the mixture is hot, cooling the mixture to room temperature, measuring the contents and the pH value of the solution, adding the water for injection with full dose into the solution, mixing the mixture evenly, filtering the mixture through 0.22 mu m of microfiltration membrane until the mixture is clear, packaging the filtrate into infusion bottles after intermediates are measured to be qualified, plugging the bottles, and rolling the mouths of the bottoms to obtain the nelarabine injection after hot pressing sterilization.

The invention belongs to the technical field of concrete admixtures, and relates to graphene modified concrete retarder and a preparation method thereof. The retarder disclosed by the invention is prepared from the following components in parts by weight: 10 to 40 parts of graphene, 5 to 35 parts of ethylenediamine tetraacetic acid salt, 10 to 30 parts of formate, 10 to 35 parts of calcium bromideand 10 to 20 parts of urea. The retarder has the characteristics that the concrete setting time is delayed, the concrete strength increasing speed is increased, and the strength of concrete at all ages is improved.

The present invention provides compositions containing efinaconazole, butylated hydroxytoluene, a salt of ethylenediaminetetraacetic acid, and optional citric acid. The compositions exhibit stable color profiles and are useful in the treatment of fungal infections.

The invention discloses a metal surface cleaning agent and a preparation method thereof. The cleaning agent is prepared by mixing alkylphenol polyvinyl ether, a defoaming agent, alcohol ether, hydrogen peroxide, ethylene diamine tetraacetic acid salt, pearl powder, sodium hydroxide and deionized water. The preparation method comprises the following steps: 1, weighing alkylphenol polyvinyl ether, the defoaming agent, alcohol ether, hydrogen peroxide, ethylene diamine tetraacetic acid salt, pearl powder, sodium hydroxide and deionized water; 2, mixing the alkylphenol polyvinyl ether, alcohol ether, ethylene diamine tetraacetic acid salt, sodium hydroxide and deionized water, stirring and heating for 2-6 minutes, and naturally cooling to obtain a mixed liquid I; 3, adding the pearl powder into the mixed liquid I, and stirring for 12-16 minutes to obtain a mixed liquid II; and 4, adding hydrogen peroxide into the mixed liquid II, stirring, and finally adding the defoaming agent to obtain the cleaning agent. The cleaning agent has strong oil stain removing capability and little foam, and can be normally used at low temperature.

The invention discloses a method of extracting body fluid of a crab, which belongs to the field of biotechnology and includes puncturing a living body of the crab with a needle of a syringe to slightly extract body fluid of the living body of the crab, immediately putting the extract into a container in which ethylenediaminetetraacetic acid anticoagulant solution or oxalate anticoagulant solution is added preliminarily, adjusting addition amount of the anticoagulant solution to control concentration of the coagulant in the extract to be within a certain range, fully mixing the anticoagulant solution with the extract prior to filtering by means of a filter medium, centrifuging the mixture at a rotation speed of 4000rpm/min-8000rpm/min to obtain clear liquor, finally adding phosphate buffer with a pH range from 5.5 to7.5 into the clear liquor to obtain the stored body fluid of the crab, and temporarily reserving the stored body fluid of the crab in a refrigerating chamber of 0 DEG C to 4 DEG C or reserving the stored body fluid of the crab for a long time at -80 DEG C to -20 DEG C. The method is simple in operation and free of expensive equipment, and the body fluid of the crab is high in protein content and has fewer impurities.

The invention relates to a ketamine-containing pharmaceutical composition as well as a preparation method and application thereof. The ketamine-containing pharmaceutical composition comprises the following components in parts by weight of 16000 to 16500 parts of ketamine; 120 to 180 parts of citric acid; 5 to 15 parts of ethylene diamine tetraacetic acid salt; 40 to 100 parts of an adsorbent; 2 to 8 parts of Tween 80; 0.1-4 parts of a preservative; and the absorbent is a cellulose adsorbent. The ketamine-containing pharmaceutical composition disclosed by the invention can realize a very good drug effect through nasal administration.

The invention relates to a preparation method of environment-friendly plant energy liquid. The energy liquid is prepared from saccharomycetes, lactic acid bacteria, bacillus licheniformis, photosynthetic bacteria, ethylenediamine tetraacetic acid salt, inorganic salt, an additive, water and the like. The energy liquid is non-toxic and harmless, and can be directly sprayed on plants when in use. The energy liquid can significantly promote healthy growth of plants, increase the yield by 15-20%, significantly reduce plant diseases and insect pests, improve the quality of agricultural products and improve the taste. In addition, the energy liquid also can improve the soil, enhance the water retention capacity of the soil and solve the problems of soil acidification or hardening and the like. In addition, the preparation process of the energy liquid is simple, the whole preparation process is green and environment-friendly, and no three wastes are discharged.