130 results about "Disodium EDTA" patented technology

The invention discloses beryllium element detection test paper as well as a preparation method, a detection method and application thereof. The beryllium element detection test paper comprises a filter paper base material, a color developing agent chrome azurol S and a shielding agent ethylene diamine tetraacetic acid disodium salt, the color developing agent chrome azurol S and the shielding agent disodium ethylene diamine tetraacetate are loaded on the filter paper base material. When the beryllium element detection test paper is used for detecting a surface beryllium pollution detection object, the detection method is simple and rapid to operate, high in sensitivity and low in cost.

The invention discloses a triiodothyronine dissociation agent, a detection kit, a preparation method of the triiodothyronine dissociation agent and application of the triiodothyronine dissociation agent and the detection kit, and the triiodothyronine dissociation agent comprises 10-100 mM of acetic acid-sodium acetate buffer solution, 0.05-1 g / L of ethylene diamine tetraacetic acid disodium salt, 1-10 g / L of perfluoroalkyl ethyl methacrylate, 0.2-1 mL / L of Tween-20 and 0.2-2 mL / L of ProClin 300, the pH (Potential of Hydrogen) of the triiodothyronine dissociation agent is 5.5 + / -1; the kit comprises a triiodothyronine dissociation agent and a reagent strip. According to the present invention, the two sites can be specifically recognized, the sensitivity and the specificity are high, the high-specificity detection on the specific antigen can be achieved, and the low-end sensitivity is high; meanwhile, the interference problem of rare earth europium during detection of triiodothyronine can be solved, and the accuracy of a detection result is further improved.

The application discloses a polishing liquid and a polishing method for a laser gyroscope cavity, and the polishing liquid comprises a polishing liquid and acid-resistant soft abrasive particles, the polishing liquid comprises the following components in mass fraction: HF 5-20%, H2SO4 5-10%, CH3COOH 10-20%, NH4HF 10-20%, disodium ethylenediaminetetraacetate 2-5%, ammonium sulfate 2-5%, and the balance is water; the mass of the acid-resistant soft abrasive particles is 10-20% of the mass of the polishing liquid. The polishing method comprises circulating jet polishing of the polishing liquid at a flow rate of 500-600 mL / min through the laser gyroscope cavity. The polishing liquid can realize one-time polishing of the laser gyroscope cavity during polishing, not only has good polishing effect, but also greatly improves polishing efficiency and greatly reduces polishing cost, and can also avoid the uneven corrosion caused by the traditional polishing method of fixing the cavity.

The invention discloses a method for analyzing related substances and impurities in a reaction process of Mabazavir, relates to the field of medicine detection, and aims to provide a high-sensitivity and excellent-stability related substance analysis method for controlling the reaction process of Mabazavir, and the chromatographic conditions are as follows: a C18 chromatographic column (Waters Xselect CSH C18, 4.6 * 100mm, 3.5 mu m) of which the surface is charged and hybridized is adopted as a chromatographic column; a mobile phase A is a 0.05%-0.2% trifluoroacetic acid solution containing 0.1-1.0 mmol / L disodium ethylene diamine tetraacetate, a mobile phase B is acetonitrile, and isocratic elution is carried out according to the ratio of 55: 45; the column temperature is 40-60 DEG C; the flow velocity is 0.5 to 1.0 mL / min; the sample size is 5-20 [mu] l; and the operation time is 20-60 minutes. The method has the advantages of high detection sensitivity, good reproducibility, high stability and the like, and is suitable for detecting related substances controlled in the reaction process of the macavir.

The invention discloses a preparation method of nanorods, micro-nano particles and flaky mixed gold powder. The preparation method comprises the following steps: (1) taking ethylene glycol, high-purity water or a mixed solution of ethylene glycol and high-purity water as a solution a; (2) dissolving chloroauric acid in the solution a to obtain a solution b; (3) dissolving disodium ethylene diamine tetraacetate in the solution b to obtain a solution c; (4) dissolving polyvinylpyrrolidone in the solution c to obtain a solution d; (5) dissolving a reducing agent in the solution d to obtain a solution e; (6) adding sodium hydroxide into the solution e to obtain a solution f; (7) transferring the solution f into a polytetrafluoroethylene liner, and then performing hydrothermal reaction to prepare gold powder; and (8) washing, separating and drying the gold powder to prepare the gold powder with different shapes and sizes. The preparation method is simple, high-cost equipment is not needed, the batch morphology of the product is stable, and large-scale low-cost preparation of the gold powder is facilitated.

The invention relates to the technical field of production and preparation of ammonium tetramolybdate, and particularly discloses a preparation method for producing high-purity ammonium tetramolybdate from low-grade molybdenite. The preparation method for producing the high-purity ammonium tetramolybdate from the low-grade molybdenite comprises the following steps: S1, pretreating the low-grade molybdenite to obtain slag, and roasting the slag to obtain roasted slag; s2, the roasted slag and an ammonia water solution are mixed and leached, and a leaching solution is obtained; s3, an impurity removal agent and an adsorbent are added into the leachate for adsorption and purification, the impurity removal agent comprises mercaptoacetic acid and disodium ethylene diamine tetraacetate, the adsorbent is modified calcium alginate, and after purified liquid passes through an anion exchange resin column, an ammonium molybdate solution is obtained; and S4, adding a nitric acid solution into the ammonium molybdate solution, adjusting the pH value, and then crystallizing to obtain high-purity ammonium tetramolybdate. According to the preparation method, the purity of the ammonium molybdate solution is effectively improved through three procedures, and then the purity of ammonium tetramolybdate prepared from low-grade molybdenite is effectively improved.

The invention belongs to the technical field of metallurgy, and relates to a comprehensive recovery method for antimony-containing gold concentrate, which comprises the following steps: S1, mixing antimony-containing gold concentrate and an antioxidant, carrying out size mixing, then adding sodium sulfide and sodium hydroxide to obtain a size, and reacting to obtain a leaching solution and leaching residues; s2, the leachate obtained in the step S1 is subjected to electrodeposition, and crude antimony and barren liquor are obtained; wherein in the step S1, the antioxidant is a mixture of sodium ascorbate and ethylenediamine tetraacetic acid disodium salt. According to the method, the antimony-containing gold concentrate is subjected to antimony leaching through Na2S under the alkaline condition, in order to avoid gold loss caused by the fact that S < 2-> is oxidized into S < x > < 2-> and then the S < x > < 2-> and Au generate AuSx dissolved in an alkaline solution in the leaching process, an antioxidant is added in the leaching process, leaching of gold in the antimony-containing gold concentrate can be remarkably reduced, and the recovery rate of gold is increased.

The invention provides pantoprazole sodium for injection, which is prepared by dissolving 40 parts of pantoprazole sodium, 25 parts of amino-PEG-mannose, 0.5 part of disodium calcium ethylene diamine tetraacetate and water for injection to 1000 parts and freeze-drying, the redissolution time of pantoprazole sodium for injection is short, related substances in the solution are not increased, the content is not obviously reduced, and the pantoprazole sodium for injection is suitable for clinical application. The stability is good in the transportation and storage process, the compatible solution can be stored for a long time during clinical use, clinical use becomes more convenient, and the problems of medication potential safety hazards, side effects and the like brought to patients due to impurity increase, content reduction and the like are also greatly reduced.

The invention relates to the technical field of biomedical materials, in particular to silver-containing collagen sponge and a preparation method thereof.The preparation method comprises the following steps that S1, silver salt is added into a collagen solution, and a first solution is obtained; s2, glutathione and ethylene diamine tetraacetic acid disodium salt are added into the first solution, and a second solution is obtained; s3, adding sodium alginate and chitosan into the second solution, and homogenizing to obtain a homogenized solution; and S4, carrying out freeze drying on the homogenized liquid to obtain the silver-containing collagen sponge. The preparation method of the silver-containing collagen sponge provided by the invention is simple in process, good in reproducibility and suitable for large-scale production; according to the silver-containing collagen sponge, chelating is stably combined with a microcapsule coating composite system, oxygen is isolated from silver ions, the oxidation rate of the silver ions is remarkably reduced, meanwhile, slow release of silver is achieved, and therefore the antibacterial time efficiency of the silver-containing collagen sponge can be prolonged.

The invention relates to the technical field of supported catalysts, and discloses a preparation method of a supported catalyst for hydrogenation reaction of 2-methylglutaronitrile, which comprises the following steps: (1) dispersing a nickel precursor in water containing disodium ethylene diamine tetraacetate to obtain a nickel precursor solution; (2) dispersing a carrier in a nickel precursor solution, stirring, filtering, and drying to obtain an intermediate I; (3) dispersing a metal precursor in ammonia water to obtain a metal precursor solution; (4) dispersing the intermediate I in a metal precursor solution, stirring, filtering, and roasting in argon to obtain an intermediate II; and (5) reducing the intermediate II in a mixed gas of hydrogen and argon to obtain the supported catalyst. Through cooperation of the carrier and the active component and optimization of a preparation process, the load rate of the active component is improved, active center distribution inside and on the surface of the catalyst is improved, and the catalytic effect is further improved.

The invention provides a synthetic method of methyl ethyl ketazine. According to the synthetic method, a nonionic surfactant is introduced into a traditional hydrogen peroxide method reaction system; the specific reaction system comprises raw materials, a catalyst, an oxidizing agent and an auxiliary agent, wherein the raw materials comprise butanone and ammonia water, the oxidizing agent is hydrogen peroxide, the catalyst is an amide compound, the auxiliary agent is a nonionic surfactant, and preferably, EDTA disodium can be introduced into the hydrogen peroxide. By introducing the auxiliary agent to modulate the reaction system environment, the effective contact area between the reaction materials can be greatly increased, the synthesis reaction is ensured to be more uniform and rapid, the reaction temperature for synthesizing the methyl ethyl ketazine can be reduced, the energy consumption is reduced, and the effects of improving the reaction efficiency and the yield of the methyl ethyl ketazine are also achieved.

The invention relates to the technical field of water hardness detection, in particular to a water hardness detection reagent as well as a preparation method and application thereof. Comprising the following raw materials in parts by weight: 0.8-1.5 parts of ethanolamine, 5-7 parts of diethanolamine, 35-40 parts of triethanolamine, 52-57 parts of an ammonia-ammonium chloride buffer solution, 1.5-2 parts of a chrome black T indicator, 1-1.5 parts of ethylene diamine tetraacetic acid disodium magnesium salt, 0.1-0.3 part of sodium chloride and 0.1-0.3 part of a formaldehyde aqueous solution. The prepared water hardness detection reagent has the characteristics of good stability and high sensitivity.

The invention discloses a method for stably fixing sulfides in water for a long time. The method comprises the following operation steps: step 1, preparing a composite reagent; 2, fixing the water sample; 2, fixing the water sample; step 4, automatic detection; step 5, quality control; the invention has the following beneficial effects: through steric hindrance effect and electrostatic repulsion effect of sodium carboxymethyl cellulose, zinc sulfide is uniformly dispersed in the form of 50-200nm nanoscale particles, particle aggregation and sedimentation are effectively inhibited, long-acting preservation of more than or equal to 7 days is realized, pH value adjustment or addition of other chemical reagents is not needed during preservation, and the method is simple and convenient to operate. A dynamic equilibrium system is established through coordination competition of disodium ethylene diamine tetraacetate and zinc ions, and when the concentration of sulfide in a water sample changes in a range of 0.1 mg / L-50 mg / L, the release rate of the zinc ions can be adaptively adjusted, so that complete generation of zinc sulfide precipitates is ensured, and a wider concentration detection range is covered.

The present application belongs to the field of dandruff removal, and particularly relates to a dandruff removal composition, a preparation method and application thereof. The raw materials of the dandruff removal composition include a dandruff removal component and auxiliary materials, the raw materials of the dandruff removal component are Schisandra chinensis and Evodia rutaecarpa, and the auxiliary materials include phase A, phase B, phase C and phase E, phase A is selected from water and sodium laureth sulfate, phase B is selected from one or two of glycerol and polyquaternium, phase C is selected from one or more of sodium cocamphopropionate, sodium chloride, disodium EDTA, cocamide MEA, phenoxyethanol, ethylhexylglycerin, PEG-7, glyceryl cocoate and panthenol, and phase E is selected from one or more of citric acid, sodium chloride and water. It is found through repeated test research that Schisandra chinensis and Evodia rutaecarpa used in the dandruff removal component of the present application can synergistically promote the reduction of the number of dandruff of subjects with dandruff problems, not only achieving a good anti-dandruff effect, but also significantly inhibiting scalp itching.

The application provides a method for determining the content of cobalt and nickel in a plating layer, relates to the technical field of plating layer component analysis, and adopts nitric acid to heat and digest the plating layer sample, so that cobalt and nickel are completely dissolved in the form of ions, and a to-be-measured mother liquor is prepared by constant volume; a buffer color developing solution with a pH value of 8-12 and containing disodium EDTA and ammonium chloride is prepared, cobalt and nickel standard samples and the to-be-measured mother liquor are respectively combined with the buffer color developing solution to develop color, the absorbance is measured at the characteristic absorption wavelength of cobalt and the characteristic absorption wavelength of nickel, the interference correction coefficient is obtained according to a standard curve, the concentration of cobalt and nickel ions in the to-be-measured mother liquor is calculated according to the absorbance and the interference correction coefficient, and the content of cobalt and nickel in the plating layer is converted by combining the sample weight and the constant volume. The application does not need large and expensive instruments, has low reagent cost, is simple to operate, has a relative standard deviation of detection of less than or equal to 2%, a standard addition recovery of 98%-102%, high precision and high accuracy, and is suitable for batch and normal detection of electroplating enterprises and detection institutions.

The invention provides an acidic decolorizing agent. The invention relates to an adhesive which comprises the following components in parts by weight: 30-34 parts of hydrolyzed wheat starch, 28-32 parts of wheat flour, 12-16 parts of potassium persulfate, 4-8 parts of ammonium persulfate, 3.5-7.5 parts of hydroxyethyl cellulose, 1.5-5.5 parts of silicon dioxide, 1-2 parts of hydroxypropyl trimethyl ammonium chloride hydrolyzed collagen, 0.8-1.3 parts of guar gum and 0.8-1.3 parts of sodium metasilicate. The invention relates to an anti-rust agent, which is prepared from the following components in parts by weight: 0.8 to 1.3 parts of magnesium stearate, 0.8 to 1.3 parts of magnesium carbonate, 0.8 to 1.3 parts of disodium ethylene diamine tetraacetate, 0.08 to 0.12 part of hydrolyzed keratin, 0.4 to 0.8 part of sodium laureth sulfate, 0.3 to 0.5 part of titanium dioxide, 0.3 to 0.5 part of glucose and 0.1 to 0.3 part of mineral oil.

The invention discloses a compound antioxidant and a preparation method thereof. The compound antioxidant comprises the following raw materials: 50-100g of copper sulfate; 150 to 200 ml of sodium sulfite; 15 to 20g of disodium ethylene diamine tetraacetate; 5-10 g of sodium dodecyl benzene sulfonate; and 500 to 1000 ml of deionized water. The composite antioxidant is prepared by the following process steps: fully dissolving 50-100g of copper sulfate in 1L of deionized water, and uniformly stirring. Slowly adding 150-200ml of sodium sulfite into the copper sulfate solution, controlling the reaction temperature within 30-50 DEG C, and continuously stirring for 1-2 hours until the reaction is complete. Adding 15-20g of disodium ethylene diamine tetraacetate into the solution, and stirring for 1 hour to improve the stability of the antioxidant. And then adding 5-10g of sodium dodecyl benzene sulfonate, and stirring for 1 hour. And finally, removing impurities in the solution in a suction filtration or filtration manner to obtain the composite antioxidant. The composite antioxidant is safe, environmentally friendly and high in applicability, oxidation reaction of copper can be effectively inhibited to a certain extent, and the shelf life of the product is prolonged.

The present invention belongs to the field of mineral processing technology, and specifically relates to a cascade comprehensive recovery process for low-grade polymetallic sulfide ores. A new cascade separation process of "copper priority flotation-sulfur-cobalt mixed flotation-sulfur-cobalt flotation separation" is adopted, and a sulfur combination inhibitor (composed of tannin, citric acid and ammonium silicate in a mass ratio of 1:1:1 to 2:1:1), a collector (ethylthiocarbamate), a foaming agent (propylene glycol ethyl ether), a combination collector (amyl xanthate and butyl ammonium black medicine in a mass ratio of 5:1 to 2:1), and a sulfur-cobalt separation inhibitor (sodium bisulfite and disodium ethylenediaminetetraacetic acid in a mass ratio of 2:1 to 4:1) is used to obtain a stable flotation effect under weakly alkaline conditions of the ore pulp, thereby realizing the green and low-carbon cascade comprehensive recovery of low-grade copper polymetallic sulfide ores, especially the effective recovery of associated cobalt minerals in the ore.

The present invention relates to the technical field of element content detection, and in particular to a method for determining the gold content and other element contents in a gold alloy product. The method comprises the following steps: 1) dissolving a sample, adding hydrochloric acid, disodium ethylenediaminetetraacetic acid, tartaric acid, oxalic acid, and perchloric acid to prepare a stable sample solution; 2) preparing a calibration solution composed of the main element contents; 3) measuring calibration samples of gold, silver, copper, zinc, nickel, iron, manganese, and chromium with known concentrations to determine the test conditions for the above elements; and 4) testing the calibration solution samples to construct a calibration working curve showing the relationship between X-ray fluorescence spectrum intensity and the gold, silver, copper, zinc, nickel, iron, manganese, and chromium content. The calibration curve is then used to test the sample to determine the gold, silver, copper, zinc, nickel, iron, manganese, and chromium contents in the gold alloy product to be tested. This method can quickly and accurately determine the gold, silver, copper, zinc, nickel, iron, manganese, and chromium contents in gold alloy products with a gold content of 0.15% to 99.9%.

The invention discloses a synthesis method of nickel-aluminum catalyzed quinary lactam containing a quaternary carbon chiral center, which comprises the following steps: in a nitrogen atmosphere, sequentially adding a secondary phosphine oxide ligand, a metal catalyst Ni (cod) 2, a formamide compound and a solvent into a reaction flask, then adding Lewis acid, stirring at a specified reaction temperature, cooling to room temperature after the reaction is completed, and filtering to obtain the quinary lactam containing the quaternary carbon chiral center. And adding 2mL of a 5wt% ethylene diamine tetraacetic acid aqueous solution for washing, separating liquid, drying an organic phase by using anhydrous sodium sulfate, and carrying out column chromatography separation to obtain the quinary lactam containing the quaternary carbon chiral center. According to the method, atom loss does not exist in the reaction process, no other waste is generated, the reaction yield is high, and the selectivity is high.

The application relates to the technical field of water hardness detection, in particular to a water quality hardness detection reagent, a preparation method and application thereof, the water quality hardness detection reagent comprises the following raw materials in parts by weight: ethanolamine 0.8-1.5 parts, diethanolamine 5-7 parts, triethanolamine 35-40 parts, ammonia-ammonium chloride buffer solution 52-57 parts, chrome black T indicator 1.5-2 parts, ethylenediaminetetraacetic acid disodium magnesium salt 1-1.5 parts, sodium chloride 0.1-0.3 parts and formaldehyde aqueous solution 0.1-0.3 parts. The water quality hardness detection reagent prepared by the application has the characteristics of good stability and high sensitivity.

The invention provides a glutathione reductase assay kit. The kit comprises a reagent 1 and a reagent 2, wherein the reagent 1 comprises the following main components: a tris (hydroxymethyl) aminomethane buffer solution (pH 7.8), disodium ethylene diamine tetraacetate (EDTA-2NA), oxidized glutathione (GSSG) and a preservative; the reagent 2 comprises the following main components: a tris (hydroxymethyl) aminomethane buffer solution (pH 9.6), reduced coenzyme II (NADPH) and a preservative. According to the invention, the enzyme reaction accelerator is added into the reagent 1, so that the maximum dilution multiple of the glutathione reductase determination kit is improved; a compound enzyme stabilizer is added into the reagent 2, so that the opening stability of the reagent is better; a diethylenetriamine pentaacetic acid (DTPA) metal chelating agent is added into the reagent 2, and the blank absorbance of the reagent is reduced and slowed down after long-term storage.

The application discloses a copper strip surface cleaning agent, which is composed of the following components in percentage by mass: 10-20% of citric acid, 5-10% of ammonium oxalate, 5-10% of disodium ethylenediaminetetraacetate, 1-5% of polyhydroxy alcohol, 0.5-2% of persulfate, 0.5-1.5% of surfactant, and the balance of water. Compared with traditional strong acid cleaning, the copper strip surface cleaning agent is safe and environmentally friendly, has no damage to human body and clothes, has no irritating odor, has no pollution to the environment, and has the removal effect of the oxide on the surface of the copper strip reaching the effect of the strong acid cleaning. In the case that degreasing is not complete, the cleaning effect is even better than that of the strong acid cleaning. The copper strip surface is not damaged, the strip surface is not corroded by over pickling, and the copper strip surface has a certain passivation effect.

The present invention relates to the field of biomedicine, and in particular to a gel separation buffer for capillary electrophoresis detection, characterized in that it comprises: tris(hydroxymethyl)aminomethane (Tris), 3.1-4.6% (w / w) boric acid, disodium ethylenediaminetetraacetate (EDTA), glycerol, a surfactant, 8.0-12.0% (w / w) dextran, wherein the surfactant is sodium dodecyl sulfate (SDS) or sodium hexadecyl sulfate (SHS). The present invention provides a gel separation buffer with good separation, stable baseline and good durability.

The invention discloses a method for measuring the content of cyanide in sodium nitroprusside by potentiometric titration, which comprises the following steps: taking a cyanide ion selective electrode as an indicator electrode, adding disodium ethylene diamine tetraacetate into a solution to be measured, and measuring the content of cyanide in sodium nitroprusside under an alkaline condition. The method is easy to operate, high in safety, high in sensitivity, good in precision and high in accuracy, and the content of cyanide in sodium nitroprusside and related preparations of sodium nitroprusside can be rapidly and accurately measured.

The application discloses a kind of iron silver diatomic catalyst based on ligand complexation effect construction and its preparation method and application, belong to material science and environmental engineering technical field;The method utilizes the difference between iron, silver atom and o-phenanthroline, ethylenediamine tetraacetic acid disodium ligand complexing rate and capacity, optimizes the adding order of ferric nitrate and silver nitrate, accurately controls the complexation mode of metal atom and ligand oxygen / nitrogen atom;And further with the directional assembly and melting point reduction effect of intermolecular hydrogen bond, successfully prepare the diatomic catalyst that iron silver atomic spacing and coordination configuration can be controlled;The design essentially strengthens the synergistic catalysis of iron silver double site, realizes the cascade activation of peroxymonosulfate internal oxygen atom, and then generates singlet oxygen with high yield and high output;The application provides an efficient new material and feasible new technical scheme for the advanced treatment of typical phenolic and antibiotic wastewater.

The present invention provides a room temperature stable solution for injection comprising Abaloparatide and stabilizer selected from L – methionine, disodium EDTA, D-ɑ-tocopheryl polyethylene glycol succinate, hydroxypropyl betadex, mannitol, S- methyl-L- cysteine or a mixture thereof, wherein the solution is stable for at least 6 months when stored at 25 °C temperature and 60 % relative humidity Further, the present invention provides a process for the preparation of the said solution. The invention provides an injectable solution that is stable at room temperature which overcomes the limitations of the currently marketed formulation.

This invention discloses an environmentally friendly descaling and cleaning agent for subsea pipelines, its preparation method, and its application method. The descaling and cleaning agent comprises the following components by mass percentage: Agent A: 50%–90% tetramethylolphosphine sulfate; balance water. Agent B: 1%–12% disodium ethylenediaminetetraacetate; 1%–8% thiourea; 1%–5% ammonium chloride; 0.1%–8% alcohol ether carboxylates or alcohol ether sulfates; 0.8%–11% alkylphenol polyoxyethylene ether; balance water. The descaling and cleaning agent of this application consists of two agents, has a near-neutral pH, and is an environmentally friendly descaling agent. Furthermore, this descaling and cleaning agent can effectively prevent the generation of sulfides and high-valence ferric ions, effectively controlling corrosion.

The invention discloses a water-soluble quenching medium and a preparation method thereof, and mainly relates to the technical field of quenching water aqua. The water-soluble quenching medium is prepared from the following components in parts by weight: 40 to 50 parts of polyalkylene glycol, 8 to 12 parts of polyacrylamide, 15 to 25 parts of antirust agent, 4 to 10 parts of sodium polyacrylate, 4 to 8 parts of carboxymethylcellulose, 2 to 4 parts of polypropylene glycol, 1 to 2 parts of Tween 80 and 0.2 to 0.6 part of ethylene diamine tetraacetic acid. Compared with the prior art, the water-soluble quenching medium prepared by the invention takes the polyalkylene glycol as a main component, has good heat conduction performance, can adjust the fluidity of a solution, can quickly transfer heat and ensure uniform dispersion, and realizes excellent quenching performance by utilizing the synergistic effect of various assistants. Meanwhile, a specific antirust agent is added, potassium phosphate and borax are wrapped by sodium silicate or modified sodium silicate to act on the metal surface, a compact and stable protective film is formed, and the antirust performance and the quenching speed of the water-soluble quenching medium are improved.

The invention discloses a deodorization composition, a preparation method thereof and application of the deodorization composition in deodorization of cat excrement. The deodorization composition is prepared from the following components in parts by weight: 15 to 30 parts of compound enzyme, 5 to 35 parts of N, N '-bis (3-picolyl) thiourea, 5 to 10 parts of chitosan / pectin embedded lactobacillus plantarum, 2 to 3 parts of zinc ions, 0.01 to 0.1 part of citric acid, 0.02 to 0.2 part of disodium ethylene diamine tetraacetate and 19.7 to 78.97 parts of water, the pH value of the deodorization composition is 5 to 6. The deodorization composition has a uniform and stable system, and the conditions of layering, flocculent precipitation and the like are avoided. The deodorant composition not only has an excellent short-term removal rate for cat excrement such as cat urine and cat excrement, but also can take effect quickly, and has an excellent long-term removal rate.