2095 results about "Sodium dihydrogen phosphate" patented technology

The invention discloses a method for preparing sodium dihydrogen phosphate by utilizing phosphoric acid by wet process. The method comprises the steps of carrying out reaction on carbamide and the phosphoric acid by the wet process to obtain intermediate, and then carrying out a reaction on the intermediate and sodium hydroxide to obtain the sodium dihydrogen phosphate product. The method is short in process route, low in energy consumption, stable in product quality, low in production cost, convenient to operate and safe in production; the by-product slurry can be completely recycled; the whole production process is environment-friendly, clean and free from pollution as well as emission of waste gas, waste water and waste residue; therefore, the method responses to the policy of energy conservation and emission reduction as well as clean production, and solves the problems of complicated technology, unstable product quality, high energy consumption, environmental pollution and the like in the prior art; the obtained sodium dihydrogen phosphate product has the purity of more than or equal to 98%.

The invention discloses a high-efficiency graphene / silver phosphate composite visible light photocatalyst and a preparation method thereof, belonging to the technical field of composite materials and environmental management photocatalysis. The preparation method comprises the following steps: dissolving graphene oxide in water, and carrying out ultrasonic treatment to obtain a graphene oxide dispersed liquid; dissolving silver nitrate in deionized water, gradually and dropwisely adding into the graphene oxide dispersed liquid while stirring to obtain a mixed solution, uniformly stirring, and aging; dropwisely adding a prepared disodium hydrogen phosphate or sodium dihydrogen phosphate solution into the graphene oxide-silver nitrate mixed solution, continuing stirring, transferring into a hydrothermal reaction kettle, carrying out hydrothermal reaction, and cooling to room temperature; and washing the reaction product, and carrying out vacuum drying to obtain the visible light photocatalyst. The invention has the advantages of wide material sources and simple preparation process; and the obtained composite material has the advantages of controllable structure and regular pattern, and has high-efficiency degradation effect on organic dyes rhodamine B and methylene blue with certain concentration under the visible light irradiation.

Colonic evacuation, treatment of small bowel bacterial overgrowth or irritable bowel syndrome or treating acute or chronic bacterial bowel infection comprises administering an osmotic colonic evacuant in solid form, preferably a mixture of sodium dihydrogen phosphate and disodium hydrogen phosphate or a sulfate based laxative comprising a picosulfate, together with a diluent.

Colonic evacuation, treatment of small bowel bacterial overgrowth or irritable bowel syndrome or treating acute or chronic bacterial bowel infection comprises administering an osmotic colonic evacuant in solid form, preferably a mixture of sodium dihydrogen phosphate and disodium hydrogen phosphate or a sulfate based laxative comprising a picosulfate, together with a diluent.

A preparation method of a microecological culture feed additive belongs to the technical field of livestock and poultry feed additive. A solid fermentation medium comprises 40% of wheat bran, 10% of corn, 9% of soybean meal, 0.5% of urea, 0.1% of potassium dihydrogen phosphate, 0.1% of sodium dihydrogen phosphate, 0.1% of manganese sulfate, 0.2% of calcium chloride and 40% of water. fermentation strains include plant lactobacillus, bacillus subtilis and saccharomyces cerevisiae in a ratio of 1:2:2. The method comprises the following steps: crushing, sieving, mixing, disinfecting, preparing fermentation bacteria liquid, inoculating fermentation strains and obtaining a finished product. The microecological culture feed additive provided by the invention combines functions of nutrition and health care, has no toxic or side-effect or pollution, and can improve antioxidation capability and immunization function of a weaning pigling, increase daily weight gain of the pigling and forage conversion rate, reduce diarrhoea rate, reduce or prevent pigling weaning stress syndrome and substitute antibiotic additive in forage.

The present invention provides a freeze-dried medicine composition containing methylprednisolone sodium succinate and its preparation method. Said medicine composition includes 1-3000 mg of methylprednisolone sodium succinate as main component and auxiliary component including 1-1000 mg of sodium hydrogen carbonate or other alkaline medicinal auxiliary material 1-500 mg of lactose or other stabilizing agent. 1-50 mg of sodium dihydrogen phosphate or acid component of other pH buffering agent, 1-500 mg of disodium hydrogen phosphate or alkaline component of other pH buffering agent and 1-50 ml of injection water.

A process for preparing the high-toughness alum-free long-thread vermicelli includes such steps as proportionally mixing starch, konjak starch, Arabic gum, straight-chain starch, modified soybean phosphoride, sodium dihydrogen phosphate, sodium carbonate and water, stirring, gelatinizing, cooling, ageing, cutting to become long-thread vermicelli, drying, moistening, drying again and cutting short.

The present invention relates to a Pu'er tea toothpaste and a preparation method thereof. The Pu'er tea toothpaste is characterized by comprising a Pu'er tea extract, which is obtained by steps of low temperature pulverization, ultrasonic extraction, pressure filtration, separation and concentration. The Pu'er tea extract is combined with food-grade auxiliary materials comprising glycerin, sorbitol, PEG400, tetrasodium pyrophosphate, sodium dihydrogen phosphate, sodium phytate, sodium carboxymethyl cellulose, xanthan gum, sodium lauryl sulfate, calcium phosphate dihydrate, hydrated silica and essence to prepare the Pu'er tea toothpaste. The method fundamentally eliminates quality issues such as spoilage, degeneration, color changing, flavor changing and chemical safety of the tea toothpaste, and effectively prolongs a shelf period of the tea toothpaste. The tea toothpaste has multiple special efficacies, such as removing scale, decomposing residual smoke stains, tea stains and coffee stains in slits between the teeth, reducing plaque, preventing breeding of harmful bacteria, disinfecting, diminishing inflammation, stopping bleeding, eliminating odor, promoting the secretion of saliva, moisturizing mouth, recovering taste buds, improving taste sense, and enabling a user to taste better flavor of food, and is a natural healthful tea toothpaste.

An o-chloroaniline production method takes o-nitrochlorobenzene as raw material and is characterized in that the o-nitrochlorobenzene is dissolved in alcohol solvent in the presence of catalyst and additive and reacted with hydrogen at 10-120 DEG C and under 0.3-4.0 MPa; the reaction process is continuous reaction; after the completion of the reaction, the o-chloroaniline is obtained through treatment, wherein, the catalyst can be selected from one of the following: Ni / Al2O3, Raney Ni, Pt / C and Pd / C; while the additive can be selected from one, or two, or three of the following compounds: cyclohexylamine, ethylenediamine, ethanolamine, diethanolamine, triethanolamine, pyridine, liquid ammonia, ammonium bicarbonate, ammonium carbonate, sodium carbonate, sodium bicarbonate, potassium bicarbonate, potassium carbonate, potassium hydrogen phosphate, potassium dihydrogen phosphate, sodium hydrogen phosphate and sodium dihydrogen phosphate; the dosage of the catalyst takes up 0.05% to 20% of the mass of the o-nitrochlorobenzene; the dosage of the additive takes up 0. 5% to 20% of the mass of the o-nitrochlorobenzene; the alcohol can be methanol or ethanol; the dosage of alcohol takes up 30% to 150% of the dosage of the o-nitrochlorobenzene; the continuous reaction is realized through 1 to 6 tank reactors which are connected in series.

The invention relates to a composite phosphating solution of P-Ca-V on the surface of a magnesium alloy and a method for chemical conversion treatment. The solution is characterized in that each liter of the composite phosphating solution comprises the following compositions: 4 to 20 milliliters of 85 percent phosphoric acid of, 5 to 30 grams of sodium dihydrogen phosphate, 10 to 40 grams of calcium nitrate, 0.5 to 10 grams of benzene sulfonic acid sodium salt, 0.5 to 5 grams of ammonium metavanadate, and the balance being water. The method comprises the following steps: pre-degreasing, degreasing, secondary water washing, acid washing, secondary water washing, alkaline etching, secondary water washing, chemical transformation, secondary water washing, pure water washing, and drying. Taking an AZ91D magnesium alloy as an example, 48 hours after a corrosion resistance salt spray test after the treatment by the method of the invention, the corrosion area of the AZ91D magnesium alloy is less than 1 percent; the paint film adhesive force is at 0 level by a grid method and is obviously superior to the performance of a chromate conversion coating; and the formed chemical conversion coating does not contain crystal water. The composite phosphating solution has the synergistic reaction of Ca and V, as well as the functions of a corrosion inhibitor and a wetting agent of the benzene sulfonic acid sodium salt.

The invention relates to a preservation solution for organs, tissues or cells of human bodies or animals. The organ preservation solution comprises sodium citrate, potassium citrate, magnesium sulfate, sodium dihydrogen phosphate, sodium hydroxide, adenosine, arginine, tryptophan, mannitol, tetramethylpyrazine hydrochloride and other components. The organ preservation solution can be used for cooling, lavaging and preserving the organs of the human bodies or the animals, can effectively preserve human in vitro kidneys for 48 hours and animal in vitro kidneys for 72 hours, can prevent ischemia-reperfusion injury, and has great value for clinical application.

The invention discloses boilproof alumen-free sheet jellies and a processing method thereof. The boilproof alumen-free sheet jellies comprise the raw materials of starch, oxidized starch, sodium alginate, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium carbonate, salt and water. The boilproof alumen-free sheet jellies have the advantages that: the oxidized modified starch is applied to the process for preparing the sheet jellies for the first time; the paste liquid of the oxidized starch is transparent; the paste strip is short; and gelatinous property and film-forming property are high. The oxidized starch has a coordinated compatible and complementary action with the sodium alginate, the sodium dihydrogen phosphate, the disodium hydrogen phosphate, the sodium carbonate and the salt to form a good network structure. Therefore, the prepared sheet jellies have the characteristics of good mouthfeel, boiling resistance, no turbid soup, no broken strips and high transparency. The used oxidized starch has the advantages of simple preparation, eating safety and low cost.

The invention discloses a complex enrichment medium used for salmonella, listeria monocytogenes and staphylococcus aureus and a method for preparing the same. The complex enrichment medium comprises the following components in weight portion: 15 to 19 portions of tryptone, 2 to 4 portions of peptone, 2 to 3 portions of sodium dihydrogen phosphate, 2 to 3 portions of glucose, 0.5 to 1.5 portions of aesculin, 1, 000 portions of distilled water, 1 to 2.5 portions of sodium pyruvate, 3 to 10.0 portions of mannitol, 1.0 to 25.0 portions of sodium chloride, 1 to 2.5 portions of lithium chloride, 0.0001 to 0.0002 portion of potassium tellurite, and 0.005-0.015 portion of nalidixic acid, wherein the pH value is between 7.1 and 7.5. The complex enrichment medium can inhibit the growth of other pathogenic microorganisms while performing enrichment on three target pathogens, thus the complex enrichment medium can be directly applied to the isolation culture and the biological assay test of target bacteria, and can also be directly applied to a detection technology of a plurality of pathogens based on one detection platform for multiple PCR and the like to make a diagnostic report.

The invention relates to a composition with the efficacies of whitening, moisturizing, repairing and caring the skin, as well as a preparation method and applications of the composition. The skin care composition is prepared from the following raw materials: water, sodium hyaluronate, sodium dihydrogen phosphate dihydrate, potassium chloride, sodium hydroxide, calcium chloride, glutamine, benzalkonium chloride, magnesium sulfate, aminobutyric acid, sodium ascorbate, alanine, arginine, lysine hydrochloride, valine, histidine, leucine, taurine, coenzyme A, alcohol, polysorbate 80, thiamine, disodium diphosphate, recombinant human epidermal cell growth factors and the like. The skin care composition disclosed by the invention can permeate the muscle bottom for replenishing water for the skin from the deep layer, so that the skin is full of elasticity, the color of the skin is brightened, the fine wrinkles are reduced, the skin is clean and watery, the balance of water and oil is regulated, the pores are shrunk, meanwhile, the brightness of the face can be increased, the injured epidermal layer is effectively repaired, the activity of tyrosinase is inhibited, the generation of skin melanin is reduced, so that the skin is healthy, natural and white.

The invention discloses a culture medium for cultivating cordyceps militaris, a preparation method of the culture medium, a culture method of cordyceps militaris and a preparation method of an oral cordyceps militaris tablet. The culture medium for cultivating cordyceps militaris is an aqueous solution and comprises 130 to 140g / L of dry silkworm chrysalis meal, 60 to 65g / L of rice flour, 1.2 to 1.5g / L of potassium dihydrogen phosphate and 0.8 to 1.2g / L of sodium dihydrogen phosphate. The culture method of cordyceps militaris comprises the following steps of inoculation, culture and harvest re-culture. The preparation method of the oral cordyceps militaris tablet comprises the following steps of drying, multiple cold sterilization treatment, crushing, wet granulation and tabletting. Cordyceps militaris cultured by the culture medium provided by the invention has nutrient content far higher than nutrient content of cordyceps militaris cultured by other culture methods, has a golden color, a luster and a heavy fragrance. In the preparation of the dried oral cordyceps militaris tablet, multiple cold sterilization treatment is carried out after drying. Through low-temperature superfine crushing, a cordyceps militaris spore wall breaking effect is guaranteed and a nutrition constituent loss is reduced.

The invention relates to a method for preparing fatty acid phytosterol esters, which comprises the following step of: esterifying fatty acid and phytosterol in the presence of one or more catalysts such as alumina, aluminum hydroxide, aluminum salt (such as aluminum chloride, aluminum sulfate, aluminum silicate and the like), oxide of other elements in IIIA family, phosphorus pentoxide, phosphoric acid, phosphate (such as sodium dihydrogen phosphate, dipotassium phosphate and the like), a molecular sieve and silica gel in effective catalysis amount. The invention also relates to the fatty acid phytosterol esters prepared by the method, and foods, soft capsules and cosmetics containing the phytosterol esters.

A preparation method of kaolin antibacterial agent loaded with silver ion and copper ion pertains to the technical field of chemical function material. The method is characterized in that firstly silver salt, sodium dihydrogen phosphate, copper salt and water are mixed into solution, and then mixed with kaolin when stirring and finally added with ammonia chloride and ammonium dihydrogen phosphate, so as to obtain the kaolin antibacterial agent loaded with silver ion and copper ion after drying, grinding, calcining and regrinding. The method of low-temperature calcining kaolin loaded with silver ion and copper ion provided by the present invention has the advantages of simple process, good effect, being easy for realizing industrialization and no environment pollution.

The invention provides a graphene oxide / silver phosphate composite visible light catalyst and a preparation method of the graphene oxide / silver phosphate composite visible light catalyst, belonging to the technical field of nano-composite material and photocatalysis. The preparation method comprises the following steps of: dissolving graphene oxide in water, and ultrasonically treating to obtain graphene oxide dispersing liquid; adding silver acetate into the graphene oxide dispersing liquid, and evenly stirring, to obtain mixed solution; slowly dropping prepared disodium hydrogen phosphate or sodium dihydrogen phosphate solution into the mixed solution of the graphene oxide and the silver acetate to continuously stir for a while; and repeatedly washing products obtained by reaction with deionized water and absolute ethyl alcohol, and carrying out vacuum drying to obtain the graphene oxide / silver phosphate nano-composite visible light catalyst. The invention has the advantages that the invention is wide in raw material source, and simple in preparation process, the obtained composite material is better in structure and feature, and the prepared nano-composite light catalyst is high-efficiency in degradation effect to the organic dyestuff rhodamine B and the methylene blue under the irradiation of visible light due to the structural advantage.

A process for degradating the agar polyose to obtain agar oligose includes such steps as dissolving the agar powder or agar strips in the solution of sodium hydrogen phosphate and sodium dihydrogen phosphate, adding H2O2 for degradating under existance of Fe ions, adding VC for triggering reaction, adding hydrogen peroxidase for stopping reaction, high-speed centrifugal treating, depositing in alcohol, taking supernatant, evaporating and freeze drying. The resultant product has the molecular weight of about 3000 and the action and function of alpha-glucosidase inhibitor. Its advantages are high output rate (more than 85%) and low cost.

The invention relates to the technical field of sewage treatment, particularly an industrial sewage treating agent. The industrial sewage treating agent is composed of the following components in parts by mass: 1.2-2.8 parts of polyacrylamide, 30-50 parts of alum, 4-6 parts of iron trichloride, 1.2-3 parts of polyferric sulfate, 1.2-2.5 parts of coagulant aid, 3-8 parts of potassium persulfate, 12-28 parts of starch, 1.2-2.5 parts of urea, 5-10 parts of hydrogen peroxide, 5-20 parts of solvent-type lignin, 10-15 parts of sodium phosphate-sodium dihydrogen phosphate buffer system and 10-20 parts of bentonite. The industrial sewage treating agent has the advantages of wide pollutant treatment range, favorable effect, wide production raw material sources, environment friendliness, no toxicity, good effluent water quality, short technical process and high technical operation safety. The treating agent can treat various types of sewage, such as chemical wastewater in oilfields, mines, iron and steel, electroplating, dyes, pesticides, wine making, chemical industry and the like, and domestic sewage, paper mill wastewater, rivers and lakes, garbage seep water, tanning wastewater and the like. The treating agent has favorable treatment effect.

The invention relates to the field of functional materials, particularly a preparation method of an adsorbent for acid dye wastewater treatment. The invention mainly solves the technical problem that dyeing wastewater can not be easily decolorized, can not achieve the discharge standard and the like in the prior art. The preparation method comprises the following steps: putting 8-10g of beta-cyclodextrin into 1-2g of citric acid monohydrate, and adding 1g of PEG-400 and 0.25g of sodium dihydrogen phosphate to obtain a beta-cyclodextrin polymer by polymerization; adding a silane coupling agent into a chitosan solution; and cross-linking the beta-cyclodextrin polymer with the chitosan to obtain a beta-cyclodextrin-chitosan porous membrane, wherein the mol ratio of the chitosan to the beta-cyclodextrin polymer is 1:3..

The invention discloses sand sticking-resistant precoated sand. The sand sticking-resistant precoated sand comprises raw sand, a binder, urotropine, calcium stearate, a silane coupling agent and an additive A. The raw sand comprises, by weight, 76 to 90 parts of river sand, 16 to 20 parts of graphite powder, 3 to 5 parts of lignin, 4 to 6 parts of asphalt and 20 to 25 parts of loess coated particles. The loess coated particles are prepared by mixing 20 to 26 weight parts of loess, 2 to 5 weight parts of sodium dihydrogen phosphate and an appropriate amount of water into block mass and carrying out calcinations and crushing. The loess coated particles have the particle sizes of 0.3 to 0.6mm. The sand sticking-resistant precoated sand has good anti-wettability, low roughness and high temperature resistance and is not sticked to a casing easily.

The invention discloses a preparation method of a halloysite loading phosphoric acid Silverlight catalyst. The preparation method comprises the following specific steps of adding halloysite in a salpeter solution so as to obtain the halloysite after acid treatment, placing the 4-8g halloysite after acid treatment into a vacuum filtration bottle, mixing the halloysite and a silver nitrate ethanol solution under a vacuum state, enabling the silver nitrate to fully enter a halloysite pipe, sequentially stirring 2-5h, carrying out solid-liquid separation, and vacuum drying at 70-80 DEG C; adding the obtained product after drying in a 50 mL of sodium dihydrogen phosphate solution the concentration of which is 0.5-1.5mol / L, stirring for 4-5h, carrying out solid-liquid separation, washing, drying at 100-105 DEG C so as to obtain the halloysite loading phosphoric acid Silverlight catalyst. The preparation method provided by the invention has the advantages that the air and moisture in a halloysite pipeline are discharged, the silver nitrate enters a pipeline, an aluminum oxide of the inner wall of the halloysite is removed, the effects of increasing light penetrating degree and aperture property action can be achieved, the obtained silver phosphate particles are arranged in a halloysite pipe and are prevented from birdnesting and falling.

The invention discloses a preparation method of a Z-type g-C3N4@Ag@Ag3PO4 composite photocatalyst. The preparation method comprises the following steps of firstly, putting urea into a ceramic crucible with a cover, putting into a muffle furnace, and calcining under air atmosphere, so as to obtain a g-C3N4 semiconductor material; by using the g-C3N4 as a carrier, respectively using silver nitrate and sodium dihydrogen phosphate as a silver ion source and a phosphate ion source, respectively using glucose and sodium borohydride as reduction agents, and using iron nitrate nonahydrate as an oxidant, finely preparing the Z-type g-C3N4@Ag@Ag3PO4 composite material with Ag nanoparticles between the g-C3N4 and Ag3PO4. The preparation method of the Z-type g-C3N4@Ag@Ag3PO4 composite photocatalyst has the advantages that the method is simple, the control is easy, the operation is convenient, the cost is low, the green and non-pollution effects of raw materials are realized, and the like; the spectrum absorbing range is effectively widened, the compounding of photon-generated carriers is effectively decreased, and the application prospect and potential practical value are good.

The invention discloses a chromogenic medium of a coliform group and a quick detection card thereof. The medium contains peptone, yeast extract, lactose, common salt, sodium pyruvate, SDS, sodium dihydrogen phosphate, a specific enzyme chromogenic substrate and IPTG. The quick detection card consists of, in a bottom-up order: a negative film, a water absorption and moisture retention layer, a medium layer and a covering membrane, with the above medium adsorbed on the medium layer. The chromogenic medium of a coliform group and the detection card that are provided in the invention can detect coliform groups in drinking water, surface water or foodstuff, with short detection time and high efficiency. The chromogenic medium and the detection card of the invention can conduct qualitative detection to coliform groups, and simultaneously can carry out quantitative analysis. And a positive result has obvious color development and is convenient for observation, odds for emergence of false positive and false negative can be reduced, and the detection result is accurate.

A nontemplated method for producing Alpha-ferric oxide nanotubes comprises the steps of collecting 9-50 mmol / L ferric trichloride aqueous solution, adding equivoluminal 0.3-2.5 mmol / L sodium dihydrogen phosphate aqueous solution, stirring, placing into a sealed reaction vessel, sealing, performing constant temperature treatment at 180-270 DEG C for 12-72 hours, taking out of the reaction vessel, air cooling, separating red precipitate in the vessel, water washing for 2-5 times, and oven-drying in the air at 60-80 DEG C to obtain Alpha-ferric oxide nanotubes. The inventive method has the advantages of narrow size distribution of Alpha-ferric oxide nanotube particles, uniform tube diameter, simple production process and operation, good product reproducibility, and applicability to large-scale production.

The invention relates to the field of gypsum building materials, and discloses a calcium sulfate retarder. The calcium sulfate retarder is prepared from the following components in percentage by mass: 20-30 percent of a protein component raw material, 3-5 percent of an alkaline substance, 7.5-15 percent of sodium dihydrogen phosphate, 3.75-7.5 percent of organic acid, anhydride or ester, 0.01-0.05 percent of phenethyl acetate, 0.05-0.1 percent of sodium benzoate, 0.2-0.8 percent of diisopropylethylamine and 50-65 percent of water. The invention further discloses a method for preparing the calcium sulfate retarder. The calcium sulfate retarder is used for regulating the coagulation of building gypsum, and has the characteristics of low cost, good delayed coagulation effect and small strength loss.

The present invention provides a flame retardant environmentally friendly adhesive, and the raw materials comprise magnesium sulfate, magnesium chloride, water, magnesium oxide, sodium dihydrogen phosphate, boric acid, and methyl cellulose. The flame retardant environmentally friendly adhesive is a formaldehyde-free environmentally friendly inorganic adhesive, not only has flame-retardant effect, but also can make a plant fiberboard highly stable in fiber structure and high in mechanical properties, and also allows the plant fiberboard to have waterproof, moistureproof, fireproof, rot-resistant, pest control and other functions; in addition, the flame retardant environmentally friendly adhesive has readily available raw materials, and cheap in price, so that the production cost of the flame retardant environmentally friendly adhesive is relatively low. The present invention also provides a producing method of the plant fiberboard by use of the flame retardant environmentally friendly adhesive.

The invention discloses iodine disinfection liquid and a preparation method thereof. The iodine disinfection liquid comprises the following medical raw materials in proportion by weights: 4-65 g of povidone iodine, 0.05-0.15 g of potassium iodate, 4-8 g of sodium dihydrogen phosphate, 1-3 g of disodium hydrogen phosphate, suitable amount of 10% sodium hydroxide and purified water added to 1000 mL. The iodine disinfection liquid disclosed by the invention is suitable for skin disinfection and mucous membrane (oral cavity and the like) disinfection, disinfection of surgical hand washing and healthy hand washing, disinfection of fire burn and wound and disinfection of surfaces of common objects. The iodine disinfection liquid disclosed by the invention has the advantages of low skin irritation, low toxicity, action durability, safety, convenience and simpleness for use as well as steady quality.