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271 results about "Edetic Acid" patented technology
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A chelating agent that sequesters a variety of polyvalent cations such as CALCIUM. It is used in pharmaceutical manufacturing and as a food additive.
Organic liquid fertilizer containing chitosan
ActiveCN103011988AImprove the environmentPromote growthFertilizer mixturesAdditive ingredientInsect pest
The invention relates to an organic liquid fertilizer containing chitosan. The organic liquid fertilizer comprises the chitosan, humic acid, fulvic acid, phosphorus pentoxide, potassium hydroxide, boric acid, edetic acid, zinc sulphate, manganese sulfate monohydrate, glycine, glutamic acid, serine and lysine. Aqueous extract of traditional Chinese medicines is added into the organic liquid fertilizer. As various marine bioactive ingredients such as the chitosan are added into the organic liquid fertilizer, the organic liquid fertilizer can be used for culturing a great quantity of effective microbial communities of actinomycetes and the like within short time after being applied to soil. Antibiotics and other substances secreted from the effective microbial communities can inhibit harmful microbial communities of pythium aphanidermatum, rhizoctonia and the like, and thus a microbial environment of the soil can be improved rapidly. The chitosan also can be used for accelerating the growth of root systems and the combination of the root systems and the soil. In addition, as the aqueous extract with insecticidal efficacy of the traditional Chinese medicines is added into the organic liquid fertilizer, plant diseases and insect pests of leaf surfaces can be effectively reduced when the fertilizer is applied to the leaf surfaces.
Owner:QINGDAO JINGLING OCEAN TECH
Novel environment-friendly reagent for reducing leaching concentration of various heavy metals
InactiveCN103555340AReduce usage ratioSimplify the restoration construction processWater contaminantsOrganic fertilisersPhosphatePotassium manganate
The invention discloses a novel environment-friendly reagent for reducing leaching concentration of various heavy metals. The formula of the environment-friendly reagent comprises 0-30wt% of sodium polysulfide, 1-25wt% of sodium silicate, 0-15wt% of organic sulfur TMT-15, 0-20wt% of hydrazine hydrate, 1-20wt% of phosphate, 1-10wt% of sodium sulphide, 0-15wt% of ferrous sulfate, 0-5% of potassium permanganate, 0-5wt% of citric acid and 0-5wt% of edetic acid (EDTA). The novel environment-friendly reagent can be applied to ex-situ remediation of the traditional hazardous waste containing the heavy metals, and can also be applied to in-situ remediation of pollution site soil and underground water containing the heavy metals.
Owner:SHAOXING ENVIRONREM ENVIRONMENTAL TECH CO LTD
Coal washing and desulfurizing agent composition and preparation method thereof
The invention relates to an adjuvant for coal washing and desulfurizing. The adjuvant is prepared from the following raw materials in parts by weight: 20-25 parts of sodium hypochlorite NaClO, 12-15 parts of ammonium persulfate (NH4)S2O8, 8-12 parts of sodium glycollate HOCH2COONa, 6-10 parts of sodium acetate CH3COONa, 7-12 parts of potassium citrate K3C6H5O7H2O, 5-9 parts of sodium gluconate, 5-9 parts of edetic acid, 7-12 parts of potassium permanganate KMnO4, 25-32 parts of methanol CH3OH, 22-30 parts of triethanolamine (HOCH2CH2)3N, 12-16 parts of sodium dichromate Na2Cr2O7, 3-5 parts of polyaluminum ferric chloride PAFC,1-2 parts of urea CON2H4, 1-2 parts of polyacrylamide PAM, 0.5-0.8 part of sodium dodecyl benzene sulfonate C18H29NaO3S, 0.2-0.4 part of dispersing agent JFC and 100-120 parts of water. The adjuvant disclosed by the invention is simple to use, stable in performance and free of large investment and transformation equipment; the removal rate of inorganic sulfur and organic sulfur is more than 70 percent; and the removal rate of nitric oxides is more than 70 percent.
Owner:LANZHOU XINXING NEUTRAL CLEANING TECH
Citric acid gold potassium for gilding and preparation method thereof
The invention relates to citric acid gold potassium for gilding and a preparation method thereof. The molecular formula of the citric acid gold potassium is KAu2N4C12H11O8. The citric acid gold potassium is prepared by dissolving auric chloride in water, concentrating and diluting for several times, and reacting the obtained liquid with sodium potassium, edetic acid and malononitrile in a reactor.The citric acid gold potassium has the advantages of low toxicity and no free cyanogens in the product. Compared with gold potassium cyanide, the total CN<-> content of the citric acid gold potassiumis 5-6 percent in case of the same gold content, and is above 50 percent lower than that in the gold potassium cyanide. The waste liquid after gilding only contains the micro-free CN<->, thereby thewaste water processing cost in electroplating enterprises is reduced.
Owner:HENGSHENG TECH R&D CO LTD
Hair cosmetic composition
ActiveUS20050201966A1Improve hair qualityCosmetic preparationsHair removalEthylenediamineCarboxylic acid
Provided is a leave-on hair cosmetic composition, which contains the following components (A), (B) and (C): (A) an organic C2-8 dicarboxylic acid or salt thereof, (B) at least one or more of an organic solvent selected from the group consisting of aromatic alcohols, N-alkylpyrrolidones, alkylene carbonates, polypropylene glycols, lactones and cyclic ketones, wherein the organic solvent has a ClogP of from −2 to 3, and (C) an edetic acid or a salt thereof, wherein the cosmetic composition has a pH of from 2 to 5 at 25° C. when diluted to 20 times the weight with water. The present invention also relates to a hair quality improving method which includes treating the hair with the hair cosmetic composition. The hair cosmetic composition of the present invention can provide benefits such as luster, manageability, pliability and elasticity to the hair which is apt to be dry, having lost water therefrom owing to damage by coloring, permanent waving, or repetitive excessive blow drying.
Owner:KAO CORP
Textile dye
The invention relates to a textile dye. The textile dye is made of the following raw materials in parts by weight: 6-11 parts of polyvinyl alcohol, 3-6 parts of methylcellulose, 7-9 parts of polydimethylsiloxane diquaternary ammonium salt, 2-8 parts of polymethylcyclotetrasiloxane, 4-6 parts of dimethicone, 4-9 parts of alkyl glycoside, 1-5 parts of edetic acid, 2-5 parts of citronellyl nitrile, 1-2.5 parts of malic acid, 3.5-6 parts of sodium dihydrogen phosphate, 2-6 parts of alcohol, 4.3-6 parts of diphenylmethane and 4-11 parts of sodium sulphamidate. The textile dye has the beneficial effects that the textile dye provided by the invention has very good adhesive force, very good dyeing can be realized under high temperature, the color is not easily faded and the dyeing is uniform.
Owner:QINGDAO DONGCHANGRUI TEXTILE
Preparation method of gourmet powder industrial waste water treatment membrane cleaning agent
InactiveCN102029113AGuaranteed uptimeRestore fluxSemi-permeable membranesCleansing AgentsFatty alcohol
The invention relates to a preparation method of a gourmet powder industrial waste water treatment membrane cleaning agent. The preparation method comprises the following steps of: mixing inorganic salt, a coupling agent, a function monomer with surface activity, a stabilizer, an addition agent, an organic solvent and deionized water, placing the materials in a reactor, and stirring at normal temperature and normal pressure to prepare the gourmet powder industrial waste water treatment membrane cleaning agent. The gourmet powder industrial waste water treatment membrane cleaning agent is prepared by using ethanol water as the medium and comprises the following components in percent by weight: 20-33% of sodium hydroxide, 0.5-5% of sodium triphosphate, 2.5-5% of sodium alkyl benzene sulfonate, 0.1-0.5% of alkyl polyglucoside, 1-5% of kieselguhr, 1-5% of sodium hypochlorite, 1-6% of sodium silicate, 0.3-0.8% of fatty alcohol polyoxyethylene ether sulfate, 0.1-0.5% of zirconium aluminum acid ester coupling agent, 0-5% of sodium sulfate, 0-8% of sodium carbonate, 0-7% of edetic acid disodium slat, 5-10% of ethanol and 35-45% of water. The gourmet powder industrial waste water treatment membrane cleaning agent is prepared by the step of stirring the components for 4-8h at room temperature and normal pressure in a reactor.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Water quality detecting agent for residual chlorine
InactiveCN103207158ALow priceEasy to carryColor/spectral properties measurementsWater qualityMonopotassium phosphate
The invention discloses a water quality detecting agent for residual chlorine, which relates to a scene quantitative detection technology for residual chlorine concentration in a water body. The water quality detecting agent is mainly formed by mixing an N,N-diethyl-1,4-phenylenediamine, disodium hydrogen phosphate, monopotassium phosphate, edetic acid disodium and the like. In use, the water quality detecting agent is directly dissolved in a 10-milliliter water sample and then is mixed with the sample for 1-2 minutes to be dissolved, and a spectrophotometer or a liquid chromometer is utilized to measure. The water quality detecting agent provided by the invention is convenient to carry and easy to store, any other reagent is not needed when the detecting agent is in use, the result is exact and reliable, and the water quality detecting agent is suitable for scene quantitative detection on residual chlorine concentration of surface water, life and hospital wastewater, ground water, tap water, drinking water, swimming pool water and the like.
Owner:上海绿帝环保科技有限公司
Lipid emulsion with low anisidine value and preparation method thereof
InactiveCN102805727AAchieve antioxidantReduce the value of methoxyanilineEmulsion deliveryOil/fats/waxes non-active ingredientsEdetic AcidDisodium Edetate
The invention relates to a lipid emulsion with a low anisidine value, which contains oily constituents, water, an emulsifying agent and an osmotic pressure regulator, wherein the lipid emulsion contains a metal ion chelant but not an antioxidant. The content of the metal ion chelant is below 100mg / ml. The metal ion chelant is one or more of sodium calcium edentate, edetate disodium, edetate sodium and edetic acid. The invention relates to a method for preparing the lipid emulsion with the low anisidine value as well. According to the invention, in the process of preparing the lipid emulsion, other antioxidants are not needed to add, such as Vitamin E (VE), the antioxidation can be implemented only by using the metal ion chelant, and the low anisidine value can be greatly reduced. The low anisidine value of the lipid emulsion cannot be reduced by adding other antioxidants.
Owner:JIANGSU JIUXU PHARMA +1
Novel jade powder mask and preparation method thereof
InactiveCN102885713AImprove the inconvenienceThe formula is scientific and reasonableCosmetic preparationsToilet preparationsVitamin CGlycerol
The invention belongs to the field of medicinal beauty treatment and especially relates to a novel jade powder mask and a preparation method thereof. The novel jade powder mask is used for beauty treatment on the face. The novel jade powder mask comprises: by weight percentage, jade powder, collagen having a concentration of 20%, sodium hyaluronate, allantoin, disodium edetate, glycerol, butanediol, xanthan gum, bis(hydroxymethyl)imidazolidinyl urea, nonoxynol-14, vitamin B5, vitamin B3, vitamin E, vitamin C, essence and deionized water. The preparation method mainly comprises preparation of a jade powder suspension, dissolution of components of urea and the like, mixing, and addition of a non-refractory component. The preparation method realizes the combination of the modern beauty treatment technology and the traditional medical view that jade has health maintenance effects, adopts a scientific and reasonable formula, and solves the problem that traditional jade is not convenient for beauty treatment. The novel jade powder mask obtained by the preparation method can be used by a relatively cheap, effective, simple and feasible method, and has no toxic or side effect, clear effects and a wide market prospect.
Owner:袁暾 +1
Silkworm chrysalis active polypeptide after-sun repairing gel and preparation method thereof
ActiveCN103520058AAmino acid types are not inferiorNo less biological activityCosmetic preparationsToilet preparationsTremellaPurslane extract
Owner:INST OF AGRO FOOD SCI & TECH SHANDONG ACAD OF AGRI SCI
Composition and method of treatment for urogenital conditions
The present invention is directed to a composition and method for treating uro-genital conditions. One embodiment disclosed is a pharmaceutical composition for use in the treatment of uro-genital conditions wherein said composition comprises a KPV dimer, a first preservative agent, a solvent, an alkalizer, an acrylic acid-based polymer, a second preservative agent and a gelatinizing agent. Another embodiment of the invention is disclosed wherein the composition comprises CKPV (SEQ ID NO: 5) dimer, API, Carbopol®, NF, propylparaben, NF; methylparaben, NF; propylene glycol, USP; edetic acid (EDTA), USP; 2 M sodium hydroxide solution (NaOH); and sterile water for injection, USP. Also disclosed are methods and indications for use of the disclosed composition.
Owner:MSH PHARMA INC
Microetching and roughening liquid for copper surface and preparation method thereof
The invention relates to a microetching and roughening liquid for a copper surface. The microetching and roughening liquid comprises the following components by mass concentration: 5-50 g / L bivalent copper ions from a copper ion source, 20-150 g / L organic acid, 3-105 g / L chloride ions from a chloride ion source, a 0.0005-2 g / L water-soluble polymer and a 0.001-10 g / L pyridine derivative; a solventis water; the organic acid is at least one of formic acid, acetic acid, malic acid, citric acid, tartaric acid, edetic acid, iminodisuccinic acid, monochloro acetic acid, dichloroacetic acid and trichloroacetic acid; and the water-soluble polymer is a polymer of which a molecular chain contains a Imidazole or ammonium salt structure. The microetching and roughening liquid can form uniform roughening on the copper surface, is not affected by the crystal structure of the copper surface, and in the follow-up processes, can effectively increase the adhesive force of a solder-resist coating with which the copper surface is coated.
Owner:KUNSHAN CITY BANMING ELECTRONICS SCI & TECH
Novel margarine and preparation method and applications thereof
ActiveCN106720458AReduce consumptionShorten the timeEdible oils/fats production/working-upVegetable oilMonoglyceride
The invention relates to a method for preparing novel margarine by replacing animal fat with vegetable fat and gel. The invention provides a preparation method of novel margarine, aiming at solving the safety problem caused by trans-fatty acid and saturated fatty acid in dietary life. The preparation method specifically comprises the following steps: by taking supercritical rapid extracted vegetable fat as an oil base and one or more of cinnamic acid, oryzanol, sterol and monoglyceride as gel, adding 4%-20% of the oil base and gel into vegetable oil, forming a heat solution in a form of physical heating, then adding lecithin, sucrose ester, salt, citric acid, EDTA2Na, casein, sodium sorbate and milk, stirring for 5-15min at 3000-6000rpm, performing ice bath for 30min, and storing for 24h at 4 DEG C so as to be self-assembled to form the novel margarine. The obtained novel margarine has smearing and plasticity performances, can be applied into related food products as novel margarine, and can meet demands of people on healthier and safer food.
Owner:SHANGHAI HI ROAD FOOD TECHNOLOGY CO LTD
S-pantoprazole sodium composite for injection and preparation method thereof
ActiveCN102000034AImprove uniformityInhibition releasePowder deliveryOrganic active ingredientsEthylenediamineForeign matter
The invention provides an S-pantoprazole sodium composite for injection, which is prepared through a method comprising the following steps of: (1) preparing liquid medicine: selecting S-pantoprazole sodium and edetic acid or edetate as raw materials, wherein the weight ratio of the S-pantoprazole sodium and the edetic acid or the edetate is 1:0.01-0.1; weighing a right amount of the raw materials, placing into a preparation tank, adding water for the injection till the weight of a solution is 11.82-118.2 times more than that of the S-pantoprazole sodium, stirring for dissolution, uniformly mixing, and regulating the pH value of the solution at 10.0-12.5; (2) finishing active carbon; (3) absorbing; (4) carrying out aseptic filtration and split charging; and (5) carrying out vacuum freeze drying so as to obtain the S-pantoprazole sodium composite for the injection. The S-pantoprazole sodium composite for the injection and the preparation method thereof can both ensure that product heat sources, visible foreign matters and insoluble particles meet the requirements of injections for the injections, i.e. S-pantoprazole sodium preparing liquid medicine which has higher pH.
Owner:JIANGSU AOSAIKANG PHARMA CO LTD
Nucleic acid extraction lysate for cast-off cells in human feces and preparation method and application of nucleic acid extraction lysate
ActiveCN107937391AHigh purityHigh yieldMicrobiological testing/measurementDNA preparationEthylenediamineGuanidinium thiocyanate
The invention provides a nucleic acid extraction lysate for cast-off cells in human feces. The nucleic acid extraction lysate comprises 1-8 mol / L guanidinium, a 1-20 mM metal ion chelating agent and a100 mM Tris-HCl buffer solution with the pH of 7.5-8.0, wherein guanidinium is selected from at least one of guanidine hydrochloride, guanidinium isothiocyanate and guanidine thiocyanate; the metal ion chelating agent is selected from at least one edetic acid and water soluble salt of edetic acid. Preferably, the nucleic acid extraction lysate further comprises a surfactant with the volume of 1-20%, the surfactant is a non-ionic detergent, and the non-ionic detergent is selected from at least one of Tween-20, Tween-80, Brij-35, NP40 and Triton-100. The invention further provides a related preparation method and application. The nucleic acid extraction lysate can quickly and efficiently realize cell lysis, fully releases nucleic acid, meets the consumption demand for follow-up nucleic aciddetection and is suitable for large-scale popularization.
Owner:SHANGHAI TELLGEN LIFE SCI CO LTD +1
High-alkali-resistance type textile scouring agent and preparation method thereof
InactiveCN104532556AExcellent decontaminationGood hair effectFibre treatmentPolymer scienceActive agent
The invention provides a high-alkali-resistance mild-performance safe and environment-friendly textile scouring agent. The textile scouring agent is prepared from the following components in percentage by weight: 20 to 25% of alcohol alkoxylate, 15 to 25% of alkyl glycoside, 10 to 15% of ethoxy alkyl sodium sulfate, 5% of ethylene glycol monobutyl ether, 2 to 4% of organic solvents, 0.2 to 0.8% of edetic acid, 0.5 to 1.0% of defoaming agents, and 20 to 45% of water. According to the textile scouring agent, the alcohol alkoxylate with high penetration, the alkyl glycoside with a mild performance, and the ethoxy alkyl sodium sulfate which serves as an anionic surfactant are used as active matter raw materials which almost do not irritate the skin and damage cotton, hemp, silk, leather and other high-level fabrics; the formula is basically free of harmful substance residue, high in penetration, high in cleaning capacity, and outstanding in detergency capacity, and the hand feel of a processed fabric is good.
Owner:YANSHI RANHE BIOMATERIAL
Disinfecting detergent and its production process
InactiveCN1403558AGood decontamination effectLow costInorganic/elemental detergent compounding agentsSurface-active detergent compositionsChlorine dioxideHepatitis B virus
The present invention relates to one kind of disinfecting detergent and its production process. The disinfecting detergent is compounded with chlorine dioxide, fatty alcohol polyoxythyleeneether sodium sulfate, lipoacyl diethanolameine, sodium dodecyl benzene sulfonate, EDTA, sodium tetraborate and deionized water in certain proportion. The disinfecting detergent has not only strong detergency, but also the lasting effect of killing hepatitis B virus and most of pestiferous bacteria.
Owner:GUANGZHOU UNIVERSITY
Method for detecting copper, iron and calcium in flash converting furnace slag
InactiveCN105467068AThe detection method is simpleEasy to operateChemical analysis using titrationEthylenediamineSlag
The invention provides a method for detecting copper, iron and calcium in flash converting furnace slag. The method comprises the following steps: (A) dissolving a flash converting furnace slag test sample with acid to obtain a first solution containing copper ions, iron ions and calcium ions, performing reaction on the first solution, sodium sulfide and sodium hydroxide, and filtering to obtain precipitates and filtrate; (B) dissolving the obtained precipitates with acid to obtain a second solution containing bivalent copper ions and iron ions, masking iron with ammonium bifluoride in the second solution, detecting copper by adopting an iodometry method to obtain the copper content, releasing iron in the solution subjected to copper detection with aluminium trichloride, and detecting iron by adopting the iodometry method to obtain the iron content; (C) titrating the filtrate obtained in the step (A) with edetic acid, thus obtaining the calcium content. The procedures of the detection method provided by the invention are simple, one-step sample weighing is realized, and the contents of three key elements, copper, iron and calcium, in the flash converting furnace slag can be quickly, accurately and continuously measured.
Owner:YANGGU XIANGGUANG COPPER
EDTA-2Na-modified phosphate bonding agent and preparation method and application thereof
The invention discloses a EDTA-2Na-modified phosphate bonding agent and a preparation method and application thereof. The bonding agent comprises the following raw materials including 52.46-52.94 parts of industrial phosphoric acid, 10.55-10.65 parts of aluminum hydroxide powder, 0.621-0.626 part of silicic acid, 1.863-1.879 parts of boric acid, 1.242-1.253 parts of light magnesium oxide, 31.04-31.32 parts of water, 0.039-0.31 part of copper oxide, 0.039 part of ferric sulfate and 1.25-1.87 parts of EDTA-2Na. In the preparation process, the above raw materials are added in specific sequence, heated and stirred until reacting completely and finally are discharged. The prepared modified phosphate bonding agent can obviously improve the strength of sand molds and shorten the solidifying timeof the sand molds.
Owner:HUBEI UNIV OF TECH +1
Environmental phosphating solution
InactiveCN104962893AImprove stabilityEasy to operateMetallic material coating processesEdetic AcidAluminium chlorohydrate
The invention provides an environmental phosphating solution, which belongs to the field of industrial phosphating solutions. The phosphating solution comprises Zn<2+>, Mn<2+>, Ca<2+>, nitrate, phosphate, edetic acid, citric acid, tartaric acid, phytic acid, polyhydroxy carboxylic acid compound, aluminium polychlorid and polyacrylamide. The phosphating solution prepared by adopting a method provided by the invention has the advantages of good stability, simplicity in technical operation, low difficulty of control technology, high film forming speed, uniformity and fineness of films, good corrosion resistance, wide application range, low cost and convenience in use and is favorable for industrial production, and the adhesive force of metal components and coatings is increased.
Owner:DALIAN BETRUST ENVIRONMENTAL PROTECTION TECH CO LTD
Water-saving environment-friendly cleaning agent
InactiveCN102888304AEasy to useReduce usageSurface-active non-soap compounds and soap mixture detergentsBetaineCleansing Agents
The invention discloses a water-saving environment-friendly cleaning agent which is prepared by the following components by weight: 25 to 35 parts of sodium carbonate, 6 to 8 parts of anhydrous sodium sulfate, 5 to 10 parts of edetic acid, 12 to 16 parts of peracetic acid, 10 to 20 parts of octadecyl dyhydroxy glycine betaine, 4 to 6 parts of diethanol amine soap and 30 to 40 parts of deionized water. The water-saving environment-friendly cleaning agent disclosed by the invention is convenient to use, can effectively remove stubborn dirt, and can also effectively reduce the quantity of used water during the dirt removing process.
Owner:启东市中远机械有限公司
Metal antirust agent
The invention provides a metal antirust agent. The metal antirust agent comprises, by weight, 6-10 parts of citric acid, 1-5 parts of edetic acid, 4-8 parts of binary acid, 10-20 parts of monoethaneamine benzoate, 10-20 parts of triethanolamine, 10-20 parts of diethanol amine, 20-30 parts of synthetic boric acid ester, 25-35 parts of macrogol ester, 35-45 parts of epoxy acrylate resin, 30-40 parts of N-octadecane oeoyl sarcosine acid, 0.4-1.0 part of a silicon antifoaming agent and 600-800 parts of water. The metal antirust agent is scientific and reasonable in formula and free of hazardous substances such as trichloroethane and tetrachloroethane and environment pollution, and the ozone sphere at a high altitude cannot be damaged. The degreasing and decontamination capacity is high, and no harmful effect to non-ferrous metal exists. The antirust capability is high, foam is not produced, and the overflowing phenomenon cannot occur at a high pressure.
Owner:梁红
Biomass charcoal based soil repair agent and its preparation method
InactiveCN107858151AAvoid secondary pollutionGuaranteed repair efficiencyContaminated soil reclamationOrganic fertilisersSodium BentoniteHydrolysate
The invention discloses a biomass charcoal based soil repair agent, which is prepared from, by weight, 60-80 parts of biomass charcoal, 30-50 parts of crops straw, 15-25 parts of kieselguhr, 15-25 parts of sodium bentonite, 15-25 parts of potassium humate, 8-12 parts of sodium lignin sulfonate, 8-12 parts of edetic acid, 8-12 parts of tartaric acid, 5-7 parts of enzymatic hydrolysate, 5-7 parts ofmicroorganism catalytic degrading bacteria, and 5-7 parts of fermenting agent. The invention further discloses a preparation method of the biomass charcoal based soil repair agent. The biomass charcoal based soil repair agent has the advantages of absorbing heavy metal and pollutants in the soil; for the soil repair agent applies pure natural raw material, the soil repair agent can avoid secondary pollution of soil and effectively guarantee the repair efficiency.
Owner:成都知联汇科技有限公司
Preparation method of iron-based ceramic oxygen permeation membrane capable of improving oxygen permeation stability under CO2 (Carbon Dioxide) atmosphere
ActiveCN107198973AImprove oxygen permeability stabilitySemi-permeable membranesEthylenediamineCitric Acid Monohydrate
The invention discloses a preparation method of an iron-based ceramic oxygen permeation membrane capable of improving oxygen permeation stability under a CO2 (Carbon Dioxide) atmosphere. The iron-based ceramic oxygen permeation membrane has the chemical constitution of Pr0.6Sr0.4Fe1-xXxO3-delta, wherein X is any one of Nb and Al, and the stoichiometric ratio is that x is larger than or equal to 0 and less than or equal to 0.15. According to the iron-based ceramic oxygen permeation membrane provided by the invention, with the doping of the Nb, the CO2 resistance of the material can be effectively improved; with the doping of the Al, a cubic perovskite structure material with good symmetry can be obtained. The preparation method provided by the invention comprises the steps of dissolving various metal nitrate into deionized water, mixing with edetic acid and citric acid monohydrate, using ammonium hydroxide for adjusting a PH value to 7 to 8, and after volatilizing moisture, roasting for two times, and obtaining Pr0.6Sr0.4Fe1-xXxO3-delta powder; after grinding, forming at a certain pressure, roasting at 1200 to 1400 DEG C for 8 hours, and obtaining a compact oxygen permeation membrane. The Pr0.6Sr0.4Fe1-xXxO3-delta oxygen permeation membrane keeps long-time stable at 900 DEG C under a pure CO2 atmosphere, and the stable oxygen permeation amount is around 0.11ml.min<-1>.cm<-2>.
Owner:SHANGHAI UNIV
Preparation method for ZnGa2O4 mono-crystal with octahedral structure
ActiveCN102628185ARaw materials are easy to getLow costPolycrystalline material growthFrom solid stateEthylenediamineSingle crystal
The invention relates to a preparation method for a ZnGa2O4 mono-crystal with an octahedral structure. The preparation method comprises the following steps: dissolving gallium oxide in hydrochloric acid, thereby obtaining a suspension A; adding zinc acetate into distilled water, thereby obtaining a transparent solution B; after mixing the suspension A with the transparent solution B, adding edetic acid into the mixed solution, and using sodium hydroxide for adjusting the pH of the solution to be 2-3, thereby obtaining a solution C; placing the solution C under an ultraviolet lamp for reacting; reacting in a microwave reactor till water volatizes, thereby obtaining dry gel; grinding the obtained dry gel; and placing into a muffle furnace for reacting at 400-600 DEG C, thereby obtaining the final product of the ZnGa2O4 mono-crystal with the octahedral structure. The preparation method provided by the invention has the beneficial effects that the raw materials are easily obtained, the equipment cost is low, the operation is simple and the repeatability is excellent.
Owner:江苏亿承林科技有限公司
Sea cucumber preservative and use thereof
ActiveCN105360275AControl autolysisSolve the preservation problemMeat/fish preservation using chemicalsEnvironmental chemistryEdetic Acid
The invention discloses a sea cucumber preservative and a use thereof. The sea cucumber preservative is prepared from 0.1-1% by mass of a mung bean trypsin inhibitor MBTI, 0.003-0.0075% by mass disodium EDTA, 0.1-1% by mass of modified starch, 0.01-0.03% by mass of tea polyphenol, 0.01-0.05% by mass of nisin and the balance purified water. The sea cucumber preservative is nontoxic and harmless, does not produce residues, has functions of water retention and corrosion and oxidation resistance, can effectively control sea cucumber autolysis, solves the problem that sea cucumber has strong autolysis effects and is inconvenient for preservation, storage, transport and processing, improves sea cucumber product quality, prolongs a sea cucumber product shelf life, improves a sea cucumber resource utilization rate and has a high promotion application value.
Owner:JIMEI UNIV
Tranexamic acid injection and preparation method of same
The invention provides a tranexamic acid injection and a preparation method of the same. In the preparation technology, the added active carbon for needles is preprocessed as follows: washing the active carbon for needles with acetone, alcohol and edetic acid water solution, and drying to remove residual metals and other impurities in the added active carbon for needles. The preprocessed active carbon for needles is used for preparing the tranexamic acid injection, thus, the generation of impurity-Z-isomer can be reduced, and the quality of the tranexamic acid injection is guaranteed.
Owner:SHANXI PUDE PHARMA CO LTD
Dissolving-dispersing detergent for scale in pipes of high-temperature high-pressure boiler superheater in power station
The invention belongs to the technical field of chemical cleaning and in particular relates to a dissolving-dispersing detergent for scale in pipes of a high-temperature high-pressure boiler superheater in power station. The dissolving-dispersing detergent comprises the following components in percentage by mass: 1%-4% of formic acid, 1%-6% of glycolic acid, 1%-5% of citric acid, 1%-5% of edetic acid, 0.1%-0.5% of a corrosion inhibitor, 0.1%-1% of surfactant and the balance of demineralized water. The detergent has good solubility and dispersity on iron oxide scale in the high-temperature high-pressure boiler superheater, especially has solubility and dispersity remarkably better than those of the detergent in the prior art on 12CrMoV oxide scale,. Moreover, the detergent has remarkable effects of complete cleaning and cleaning to achieve the purpose of cleaning the superheater in a circulating manner, so that the operation safety performance of the high-temperature high-pressure unit in the power station is remarkably improved, and the body safety of unit working personnel is ensured. Besides, the dissolving-dispersing detergent is suitable for cleaning a water supply system before a power station boiler, a coal saver, a water cooling wall and a superheater system.
Owner:STATE GRID CORP OF CHINA +1
Preparation method and application of magnetic hierarchical porous carbon material
InactiveCN106040167ARich sourcesLow priceOther chemical processesAlkali metal oxides/hydroxidesEthylenediaminePotassium
The invention provides a preparation method and application of a magnetic hierarchical porous carbon material. The preparation method includes following steps: weighing ferric nitrate and EDTA metal potassium salt, placing the same in a mortar for mixing, and grinding well; putting a mixture into a tubular furnace; feeding inert gas, and calcining; after natural cooling, taking out a product in the tubular furnace; using alcohol / distilled water of 1:1 in volume ratio to wash the product, and drying to obtain the magnetic hierarchical porous carbon material. The magnetic hierarchical porous carbon material prepared by the method has large specific surface area, is high in adsorption capacity to antibiotics, is applied to environment sewage treatment and is high in adsorption rate, stable in performance and good in magnetic separation performance and renewability.
Owner:JIANGSU UNIV
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