162 results about "Potassium acetate" patented technology

The invention relates to the technical field of biological detection, and discloses a mycoplasma pneumoniae nucleic acid rapid detection method, which comprises the following steps: mixing a sample to be detected with a multifunctional pretreatment buffer solution containing tris (hydroxymethyl) aminomethane, potassium acetate, polyethylene glycol, saponin, spermine tetrahydrochloride and tris (2-carboxyethyl) phosphine hydrochloride, and carrying out cracking treatment; a cracking mixed solution is obtained; redissolving the enzymatic isothermal amplification basic reagent, the specific primer and the probe to obtain a redissolving amplification system; sucking the supernatant of the cracking mixed solution, adding the supernatant into a redissolving amplification system, and adding a magnesium acetate solution to obtain a reaction mixed solution to be detected; and carrying out isothermal amplification and signal acquisition to obtain a detection conclusion. The multifunctional pretreatment buffer solution is used for cracking the to-be-detected sample, sample liquefaction, cracking and nucleic acid release are completed in a single system, the nucleic acid extraction and purification step of centrifugal column adsorption or magnetic bead elution is avoided, and the operation process is simplified.

The invention discloses an environment-friendly hydrate compound inhibitor as well as a preparation method and application thereof, and relates to the technical field of hydrates. The compound inhibitor is prepared from potassium acetate serving as a main inhibitor, glycine serving as an auxiliary agent and water, can synergistically achieve the inhibition effect on hydrate generation in the two aspects of thermodynamics and dynamics, and has a good inhibition effect on hydrate formation and blocking. Meanwhile, the compound inhibitor has the characteristics of low use cost, no toxicity, no corrosion and environmental friendliness, has wide application prospects in the field of oil and gas transportation, and is easy to popularize and use.

The invention relates to a liquid detergent composition comprising a first surfactant selected from fatty alcohol ether sulfates, a second surfactant selected from betaines, optionally at least one solvent selected from ethanol, propanol, isopropanol, ethylene glycol, butyl glycol, propylene glycol, polypropylene glycol, alcoholamine, monoethanolamine, glycerol and mixtures thereof, wherein the salt concentration in the composition is about 0.2 to about 10 wt.-% and wherein the salt is selected from the group consisting of sodium salts such as sodium chloride, sodium sulfate, sodium formate, sodium acetate or sodium propionate, potassium salts such as potassium chloride, potassium sulfate, potassium formate, potassium acetate or potassium propionate, magnesium salts such as magnesium chloride, magnesium sulfate, magnesium formate, magnesium acetate or magnesium propionate, and calcium salts such as calcium chloride, calcium sulfate, calcium formate, calcium acetate or calcium propionate, and mixtures thereof, and wherein the composition is a concentrate that can be diluted with water while maintaining or increasing the viscosity.The present invention further relates to the use of such a cleaning composition for cleaning hard surfaces, in particular dishes, and to a process for preparing a cleaning composition, the process comprising diluting the concentrated liquid cleaning composition with water.

The invention relates to the technical field of epoxy resin coatings, and particularly discloses a low-corrosion snow-melting and deicing coating and a preparation method thereof. The low-corrosion snow-melting and deicing coating comprises a component A, a component B and a component C in a mass ratio of 100: (40-50): (90-100), and the component A comprises the following raw materials: 100 parts of epoxy resin, 15-25 parts of a polyurethane elastomer, 2-5 parts of an epoxy reactive diluent, 0.5-1 part of a defoaming agent, 2-5 parts of a silane coupling agent and 30-50 parts of a microcapsule snow-melting agent; the component B comprises the following raw materials in parts by weight: 40-60 parts of a polyamide curing agent and 5-10 parts of phytic acid; the component C comprises a reinforcing filler; the microcapsule snow-melting agent comprises a core material and a polyurethane wall material wrapping the core material, wherein the core material comprises potassium acetate and sodium molybdate in a mass ratio of 100: (2-4). According to the invention, the slow release effect of the snow-melting agent in the snow-melting and deicing coating can be improved, and the coating has excellent low corrosion and cracking resistance.

The invention belongs to the technical field of solar cells, and particularly relates to a triphenylamine-containing conjugated polymer hole transport layer material and a preparation method thereof. The preparation method of the triphenylamine conjugated polymer comprises the following steps: reacting aniline with bromobenzene under the action of a catalyst to generate a compound 1; reacting the compound 1 with NBS (N-bromosuccinimide), and performing bromination reaction to obtain a compound 2; reacting the compound 2 under the action of bis-pinacol diboron, potassium acetate and a catalyst to obtain a compound 3; the method comprises the following steps: dissolving a monomer 1, a monomer 2 and a catalyst in an organic solvent, and carrying out polymerization reaction under the protection of nitrogen to obtain the triphenylamine conjugated polymer. The synthetic route is simple, the yield is high, conditions are easy to realize, and the hole transport layer material prepared from the conjugated polymer of triphenylamine is high in transport efficiency and can be popularized in a large range.

The invention discloses an environment-friendly anti-icing and deicing coating as well as a preparation method and application thereof, and aims to solve the problems of low efficiency, high corrosivity, serious environmental pollution and the like in the traditional anti-icing and deicing technology. The coating material is prepared from the following components: deionized water, polyvinylpyrrolidone, propylene glycol, glycerol, fumed silica, granular silica, ethanol, potassium acetate and a waterborne polyurethane coating. The invention further provides a preparation method of the coating material, and the coating material is applied to anti-icing of metal and plastic substrates and has dual functions of preventing icing and rapidly removing ice. The coating has the advantages of being good in durability, environmentally friendly, free of corrosion to base materials and the like, is particularly suitable for anti-icing protection of equipment such as rails, wind power blades and cables, remarkably improves the operation and maintenance efficiency of key facilities and equipment, reduces the maintenance cost and has important economic and social benefits.

The invention relates to a tubular incision enzyme premixed solution and application thereof, and belongs to the technical field of biology. The invention provides a tubular endonuclease premixed solution. The tubular endonuclease premixed solution is prepared from a solvent, restriction endonuclease, potassium acetate, magnesium acetate, NaCL, KCL, Triton X-100, bovine serum albumin, dithiothreitol, glycerol and trehalose. The tubular endonuclease premixed solution has the functions of buffering and enzyme digestion, and when the tubular endonuclease premixed solution is used for enzyme digestion reaction, the tubular endonuclease premixed solution is mixed with a DNA substrate and then incubated, so that an enzyme digestion product can be recycled, and additional calculation and component addition are not needed. Moreover, when the tubular endonuclease premix liquid is used for enzyme digestion reaction, the tubular endonuclease premix liquid containing different restriction endonuclease can simultaneously perform enzyme digestion on the same enzyme digestion object, the compatibility is strong, and normal enzyme digestion can be performed on the enzyme digestion objects with different volumes and different masses.

Disclosed herein are clay swelling inhibitor compositions and methods for using them to treat oil and gas wells and subterranean formations. In a specific embodiment, the clay swelling inhibitor composition includes: calcium chloride from about 40 wt % to about 60 wt %; potassium bicarbonate from about 15 wt % to about 25 wt %; potassium formate from about 25 wt % to about 35 wt %; and additives. In another specific embodiment, the clay swelling inhibitor composition includes: potassium citrate from about 50 wt % to about 60 wt %; cesium formate from about 20 wt % to about 30 wt %; potassium acetate from about 15 wt % to about 25 wt %; and additives.

The invention discloses an environment-friendly snow melting agent which is mainly prepared from the following raw materials in percentage by mass: 20-50% of potassium acetate, 10-16% of potassium chloride, 4-10% of calcium chloride and calcium acetate, 3-7% of magnesium chloride, 10-30% of an ice-resistant binder, 11-17% of a soil protective agent, 5-6% of cellulose and 3-9% of a plant protective agent. The ice-resistant binder is one or a combination of more of calcium acetate, magnesium acetate, potassium acetate and potassium formate, the mass ratio of calcium acetate to magnesium acetate is 3: (7.5-8.5), and the soil protective agent comprises 5-15% of diatomite and 10-20% of bentonite. Compared with the prior art, the environment-friendly snow melting agent disclosed by the invention can reduce the freezing point, prevent adhesion of an ice layer and a road surface and accelerate melting of an ice surface, so that a melted ice-snow-water mixture is easier to remove, effective recycling of resources is realized, pollution to the environment is reduced, and meanwhile, the treatment pressure of wastes is reduced.

The invention discloses a magnetic bead method endotoxin-free plasmid extraction kit, relates to the technical field of plasmid extraction and endotoxin removal, including: solution I, solution II, solution III, magnetic bead liquid I, magnetic bead liquid II, cleaning solution and eluent; solution I includes: sucrose, EDTA, Tris-HCl, NaCl; solution II includes: KO H, SDS, EDTA; solution III includes: potassium acetate, sodium acetate, trehalose, pH is 5-5.6; magnetic bead liquid I includes: NaCl, sodium citrate, magnetic beads I, pH is 5.0-5.5; magnetic bead liquid II includes: guanidine hydrochloride, urea, anhydrous ethanol, isopropanol, magnetic beads II, pH is 5.5-6.5. The present invention prepares an endotoxin-free plasmid extraction kit based on a double magnetic bead method, which has the advantages of convenience, low cost and good safety, can remove endotoxins in the plasmid extraction process, and can also be used to directly remove endotoxins in plasmids, and the obtained plasmids can meet the requirements of molecular biology experiments and cell experiments such as enzyme cutting, sequencing, transfection and virus packaging. At the same time, full automation of endotoxin-free plasmid extraction can be achieved.

The invention relates to a catalyst for preparing allyl acetate through acetylation of propylene and a preparation method of the catalyst. The catalyst comprises a carrier, active components and an auxiliary agent, the average pore size of the carrier is 20-100 nm, the active components are bimetallic palladium Pd and antimony Sb, and the auxiliary agent is potassium acetate. The invention mainly solves the problems of low conversion rate, low selectivity, short service life and the like of the catalyst used in the current acryl acetylation reaction. Compared with the prior art, the catalyst provided by the invention has the advantages of high conversion rate and high selectivity on the acetylation reaction of the propylene, and solves the problem of poor stability of the existing catalyst.

This invention relates to the field of wastewater treatment and discloses a method for treating saline wastewater. The method includes: 1) evaporating the wastewater to be treated to obtain a concentrated liquid; 2) separating the concentrated liquid into solid and liquid phases, and cooling the liquid phase obtained from the solid-liquid separation to crystallize it, obtaining a crystalline liquid; 3) separating the crystalline liquid into solid and liquid phases and evaporating the liquid phase obtained from the solid-liquid separation to obtain a concentrated liquid; 4) cooling the concentrated liquid to crystallize it, obtaining a crystalline liquid; 5) separating the crystalline liquid into solid and liquid phases, wherein, relative to the CH3COO content in 1 mol of the wastewater to be treated... ‑ The wastewater to be treated contains Cl ‑ The concentration is 0.4-5 mol. The method according to this invention is environmentally friendly and can separately recover potassium chloride and potassium acetate from wastewater, maximizing the reuse of resources in the wastewater.

This invention discloses a process for preparing ultrafine glass powder using a spray pyrolysis method in the field of glass encapsulation materials. The process first prepares a homogeneous solution A using boric acid, aluminum nitrate nonahydrate, alkaline earth metal nitrates, lithium acetate, sodium acetate, and potassium acetate. Tetraethyl orthosilicate is dissolved in anhydrous ethanol to obtain solution B. A rare earth transition metal composite oxide nanoclusters encapsulated with a silica shell hybrid inorganic modifier is dispersed in anhydrous ethanol to obtain suspension C. Solution B and suspension C are mixed, and deionized water and hydrochloric acid are added to adjust the pH. After pre-hydrolysis and cooling, triethyl borate is added dropwise for co-condensation, and then mixed with solution A. After adjusting the pH and aging, the mixture is ultrasonically atomized and spray pyrolyzed to obtain ultrafine glass powder. The glass powder obtained by this invention has small particle size, high sphericity, and can be continuously produced.

The invention discloses a synthesis method of triene acetate, which comprises the following steps: adding a compound A-1, potassium acetate, a catalyst and a solvent into a reaction container, and carrying out reflux reaction in an inert gas atmosphere until complete reaction to obtain a target compound A-2, namely the triene acetate, the solvent is an ether organic solvent; the catalyst is quaternary ammonium acetate, the molecular formula of the catalyst is R1R2R3R4NOAc, and R1, R2, R3 and R4 are respectively and independently selected from C1-C18 alkyl groups. According to the invention, the target product can be generated in the low-boiling-point organic solvent, the yield and the purity are high, the use of a high-boiling-point solvent with difficulty in post-treatment is avoided, the reaction temperature is reduced, the side reaction is reduced, and the pollution to the environment is reduced. # imgabs0 #

The invention discloses a dicarbazole bipyridine compound as well as a preparation method and co-sensitization application thereof, and the specific preparation process comprises the following steps: dissolving a compound as shown in a formula II and 4-pyridylboronic acid in a solvent, adding an alkaline substance and a catalyst, carrying out heating reflux reaction under stirring, and after the reaction is finished, carrying out post-treatment to obtain a compound as shown in a formula DSB-6; the preparation method comprises the following steps: dissolving 4-bromophenylpyridine, bis (pinacolato) diboron, PdCl2 (dppf) and potassium acetate in 1, 4-dioxane, heating and refluxing, then adding a compound as shown in a formula II, an alkaline substance aqueous solution and a catalyst, heating and refluxing to react while stirring, and after the reaction is finished, carrying out post-treatment to obtain a compound as shown in a formula DSB-7, and using the compound as a dye sensitizer to prepare the dye sensitizer. According to the preparation method disclosed by the invention, an alkyl chain is connected with dicarbazole and bipyridine, and benzothiadiazole or phenyl benzothiadiazole is introduced into carbazole, so that the dicarbazole and bipyridine compound is synthesized, and a new applicable substance is added for screening dye sensitizers.

The invention provides a bio-based composite environment-friendly snow melting agent. The bio-based composite environment-friendly snow melting agent comprises the following components in parts by weight: 20-50 parts of a bio-based component, 15-30 parts of a chlorine salt component, 5-10 parts of calcium oxide, 10-20 parts of urea, 20-40 parts of potassium acetate, 2-8 parts of a composite corrosion inhibitor and 2-8 parts of an anti-skid adsorption component. According to the bio-based composite environment-friendly snow-melting agent disclosed by the invention, a renewable bio-based material is used for partially replacing a traditional snow-melting component and is compounded with conventional chlorine salt and non-chlorine salt snow-melting components, and a composite corrosion inhibitor and an anti-skid adsorption component are added, so that the aims of efficiently melting snow, being low in corrosivity and being harmless to the environment can be fulfilled.

The invention relates to the technical field of poultry breed conservation biology, and discloses application of a protein acetyl donor in ultralow-temperature cryopreservation of poultry semen. According to the application of the protein acetyl donor in ultralow-temperature cryopreservation of the poultry semen, the protein acetyl donor comprises but is not limited to magnesium acetate, potassium acetate and sodium acetate. Tests prove that the protein acetyl donor can improve the acetylation modification level of poultry sperms and improve the fertilization ability of frozen-remelted poultry sperms; therefore, the protein acetyl donor can be used as an effective component for ultralow-temperature cryopreservation of poultry semen, and plays an important role in improving the ultralow-temperature cryopreservation efficiency of poultry.

The invention belongs to the technical field of preparation of anti-inflammatory drugs, and particularly discloses a tryptanthrin derivative and a preparation method and application thereof.The structural formula of the tryptanthrin derivative is # imgabs0, R is one of R1, R2 and R3, and when R is R1, # imgabs1 # reacts with H-R1, Pd (PPh3) 2Cl, copper iodide, triethylamine and an organic solvent to prepare the tryptanthrin derivative; when R is R2, the catalyst is prepared by reacting # imgabs2 # with H-R2, Pd2 (dppf) Cl2, potassium acetate and methylbenzene; when R is R3, the PdCl (PPh3) 4 is prepared by reacting with H-R3, silver carbonate, PdCl (PPh3) 4 and acetonitrile. The tryptanthrin derivative disclosed by the invention has high biological activity and solubility and low toxicity, and has the potential of being developed into a medicine for treating ulcerative colitis.

Compositions comprising Certified Organic potassium salts derived from plant ash are described herein. The compositions described herein include potassium acetate derived from acetic acid and sunflower ash. Such compositions can be used as a fertilizer component in organic farming and result in higher plant yields compared to plants treated with inorganic forms of potassium alone.

The invention belongs to the technical field of biology, and particularly discloses a chicken semen cryopreservation solution and a preparation method thereof. The chicken semen cryopreservation liquid comprises a cryoprotection liquid I and a cryoprotection liquid II. The freezing protection liquid I is prepared from the following components: glucose, sodium glutamate, potassium acetate, dipotassium phosphate, magnesium acetate, N, N-bis (2-ethoxyl)-2-aminoethanesulfonic acid and an antibiotic solution. And the freezing protection liquid II comprises dimethylformamide and nano zinc oxide. The invention discloses a chicken semen cryopreservation solution and a preparation method thereof, by applying the chicken semen cryopreservation solution, the fertilization and incubation performance of frozen semen is remarkably improved, centrifugation-free and direct semen deposition of the frozen semen are realized, and physical damage and activity reduction caused by the centrifugation process to sperms are avoided.

The present invention provides flexible and integral skin-containing polyurethane foams and two-component foam forming compositions for making them that comprise an aromatic polyisocyanate component, such as a methylene di(phenyl isocyanate), and a polyol component of an autocatalytic aliphatic polyether polyol and a melt modifying catalyst, such as potassium acetate, that exhibit excellent inherent flame retardant properties, passing exacting tests prescribed by the UN / ECE 118.02, Annexes 6, 7 and 8. The foam forming compositions may be all liquid and thus readily processible. Further, the two-component foam forming compositions and the polyurethane foams therefrom are halogen and melamine free and exhibit low emissions and low odor.

The invention belongs to the technical field of snow melting and deicing, and discloses an environment-friendly cleaning snow-melting agent for a road surface and a preparation method thereof. The snow-melting agent is composed of 40-80 parts of a chlorine salt solution, 10-20 parts of potassium acetate, 1-10 parts of sodium gluconate, 1-10 parts of urea, 80-100 parts of glycerin and 1-10 parts of a corrosion inhibitor. Wherein the chlorine salt solution comprises 20-40 parts of calcium chloride, 10-20 parts of magnesium chloride and 100 parts of water, and the corrosion inhibitor comprises 1-10 parts of zinc dihydrogen phosphate, 1-10 parts of sodium tungstate, 1-5 parts of thiourea and 1-10 parts of sodium dodecyl benzene sulfonate. The preparation method comprises the steps of raw material pretreatment, mixing and dissolving, corrosion inhibitor adding and the like. The snow melting agent disclosed by the invention has the advantages of good snow melting effect, low corrosivity, small environmental influence, long acting time and low cost, and can reduce the spraying frequency and protect the surrounding environment.

The invention discloses environment-friendly green casting clay molding sand and a preparation method thereof, and belongs to the technical field of casting molding materials. The invention discloses a high-temperature-resistant coating which is prepared from the following components in percentage by mass: 5 to 8 weight percent of sodium bentonite, 0.2 to 1.5 weight percent of alpha-starch, 0.5 to 1.5 weight percent of rice husk powder, 0.1 to 0.4 weight percent of potassium acetate, 0.1 to 0.2 weight percent of red mud, 0.1 to 0.5 weight percent of rare earth oxide powder, 0.1 to 1 weight percent of ethyl silicate, 2.7 to 3.5 weight percent of water and the balance of silica sand. No pulverized coal is added into the molding sand, through the synergistic effect of all the components, a flake graphite layer of the nodular iron casting is eliminated, the adhesion capacity of clay colloid and the strength of the molding sand are improved, the high-quality nodular iron casting can be obtained, waste sand and waste gas emission in the casting process can be reduced, and the molding sand meets the requirements for energy reduction, emission reduction, quality improvement and efficiency improvement.

The invention discloses an N-acylamino acid surfactant and a preparation method thereof, and belongs to the technical field of surfactants, the N-acylamino acid surfactant is prepared by the following steps: adding potassium anilinoacetate, fatty aldehyde and deionized water into a supercritical reactor according to a certain molar ratio, then adding a certain amount of triethylamine phase transfer catalyst, reacting for a period of time under the condition of supercritical nitrogen, and separating out the N-acylamino acid. And filtering the product in the reactor, standing and layering the obtained filtrate, and taking the subnatant to obtain the amino acid surfactant. The fatty aldehyde and the potassium anilinoacetate are subjected to dehydrogenation reaction under the action of the triethylamine phase transfer catalyst to prepare the amino acid surfactant, the reaction is carried out under the condition of supercritical nitrogen, and the supercritical nitrogen not only provides a high-pressure condition for the dehydrogenation reaction, but also has high solubility and high diffusivity, so that the amino acid surfactant is prepared. The raw materials can be fully dissolved, mixed and reacted, and the yield of the amino acid surfactant is high.

This application discloses a method for using a synergistic enhancer in SNCR system denitrification, relating to the field of flue gas denitrification technology. The method includes the following steps: S1, preparation of the synergist composition: including potassium acetate, sodium carbonate, and water, the above raw materials are placed in a synergist preparation tank and stirred to prepare a synergist solution; S2, ammonia water delivery: the ammonia water solution is delivered through an ammonia water delivery pipeline; S3, delivery and mixing of the synergist solution for denitrification: the synergist solution is delivered to the ammonia water delivery pipeline through a synergist delivery device, so that the synergist solution and the ammonia water solution are mixed to obtain a mixed solution, which is then sprayed into the incinerator furnace for denitrification reaction. This application uses potassium acetate and sodium carbonate in a specific ratio to form a denitrification enhancer, which has a simpler structure, is easier to prepare, and requires a lower synergist dosage, effectively reducing the raw material and preparation costs of denitrification operations in incinerators, and significantly improving denitrification efficiency and reducing NOx emissions.

The invention relates to the technical field of snow-melting agents, and particularly discloses an environment-friendly snow-melting and deicing composition and a preparation method thereof. The environment-friendly snow-melting and deicing composition comprises organic acid salt sustained-release microspheres, the organic acid salt sustained-release microsphere comprises a core material and a shell layer wrapping the core material, and according to the total weight of the organic acid salt sustained-release microsphere, the core material comprises the following raw materials in parts by weight: 30-45 parts of calcium magnesium acetate, 10-20 parts of sodium formate, 15-25 parts of potassium acetate, 8-15 parts of urea, 1-3 parts of a surfactant and 2-5 parts of a corrosion inhibitor; the shell layer is prepared from the following raw materials in parts by weight: 5 to 8 parts of sodium alginate, 3 to 6 parts of chitosan, 2 to 4 parts of calcium chloride, 1 to 3 parts of carboxymethyl cellulose and 1 to 2 parts of nano silicon dioxide. The snow melting and deicing speed of the environment-friendly snow melting and deicing composition in a severe cold environment can be increased.

This invention relates to the field of fine chemical catalysis technology, specifically to an improved ion-gel confined palladium-on-carbon catalyst, its preparation method, and its applications. The catalyst uses N,N-dimethylacetamide (DMAc) as a solvent and potassium acetate as a base, with the addition of a catalytic amount of antioxidant 168 [(tris(2,4-di-tert-butylphenyl) phosphite)], and the reaction is carried out under milder CO pressure (1.0-1.6 MPa) and temperature (90-110 °C). This improved catalyst, in synergy with the optimized process, unexpectedly enables the high conversion and selectivity of 4-bromobenzyl sulfone derivatives to 4-methylsulfonylbenzoic acid derivatives, while maintaining the catalyst's excellent recyclability and stability. This invention provides a highly efficient, green, and easily industrialized synthetic route for the target product.

The invention discloses an anti-aging highlight veneer shaving board and a preparation method thereof, and belongs to the technical field of wood board production. The manufacturing method comprises the steps of eucalyptus wood shaving preparation, primary drying, potassium acetate treatment, secondary drying, acetic anhydride treatment, tertiary drying, gluing, assembly, pre-pressing and hot pressing, and the acetylated eucalyptus wood shaving board is manufactured. And then sanding, melamine paper pasting, hot pressing, colored paint roller painting, varnish and UV paint curing are conducted, and the anti-aging highlight veneer shaving board is obtained. The product has lasting highlight on the surface, solves the problem of reflection imaging sawtooth waves of a common shaving board, and is suitable for high-end furniture and indoor decoration.

The contact lens treatment solution comprises: (a) one or more potassium salts selected from the group consisting of potassium chloride, potassium citrate, potassium hydroxide, potassium borate, potassium ethylenediaminetetraacetate, and potassium phosphate; (b) an antimicrobial agent comprising alexidine or a salt or free base thereof; and (c) optionally, one or more sodium salts selected from the group consisting of sodium chloride, sodium citrate, sodium hydroxide, sodium phosphate, sodium ethylenediaminetetraacetate, and sodium borate, wherein, when one or more sodium salts are present, the one or more potassium salts are present in an amount greater than the amount of the one or more sodium salts.

The present invention is applicable to the technical field of chemical drug synthesis, and provides a preparation method of halcinonide intermediate, comprising the following steps: adding acetic acid to anecortave acetate in an organic solvent, reacting under the common catalysis of p-toluenesulfonic acid and trifluoroacetic anhydride, adjusting the pH value with ammonia, separating, washing, concentrating under reduced pressure, beating, filtering, and drying to obtain D-1; adding D-1 to dimethyl sulfoxide, reacting under the catalysis of potassium acetate, cooling, precipitating a solid, filtering, and drying to obtain D-2; adding an aqueous solution of sodium hydroxide or lithium hydroxide to D-2 in a reaction solvent, and hydrolyzing the reaction to obtain D-3; reacting D-3 with an acyl chloride in an aprotic solvent under alkaline conditions to obtain D-4; adding D-4 to DMF, and reacting with lithium chloride under nitrogen protection to obtain D-5. The raw material anecortave acetate used in the present invention is easily available and cheap, and the method for preparing D-5 is efficient, green, safe, and has a high yield.