320 results about "Disodium phosphate" patented technology

The invention discloses an inorganic phase-change material and a preparation method thereof. The inorganic phase-change material comprises at least one of a thickening agent and a water-retaining agent, and main thermit, nucleating agent, pH regulator, heat conducting agent, and water, wherein the main thermit is eutectic salt of sodium sulfate decahydrate and sodium hydrogen phosphate docecahydrate. The preparation method comprises the following steps: adding the main thermit in water, stirring in 40-45 DEG C water bath until completely fusing, adding the nucleating agent, the pH regulator, and the heat conducting agent and fully stirring to completely dissolve the nucleating agent and the pH regulator and uniformly disperse the heat conducting agent, then adding at least one of the thickening agent and the water-retaining agent and stirring to uniformly disperse the thickening agent or completely expanse the water-retaining agent, so as to obtain the inorganic phase-change material. The inorganic phase-change material of the invention has the characteristics of noninflammability and no toxicity, the phase change temperature is 21-27 DEG C, the latent heat of phase change is 214 kJ/kg, and the inorganic phase-change material has no attenuation of performance after 1000 weeks of the solidification-fusing cycle.

Aqueous oral care compositions containing hydrogen peroxide and having improved stability, such compositions containing at least 35%, by weight of the composition, of water and further including a peroxide compatible abrasive such as fused silica, calcium pyrophosphate and/or dicalcium phosphate, a gel network, and a protection system containing sodium acid pyrophosphate, disodium phosphate, and/or phosphoric acid.

The invention relates to a medical material for surgery, in particular to a chitosan polymer capable of being used as a medical bioengineering scaffold and a carrier carrying active growth factors and a preparation method thereof. In the preparation method, the raw materials comprise natural chitosan powder, gelatin powder, genipin solution and glycerol-2-disodium phosphate powder; the preparation method comprises a preparation stage of the raw materials before synthesis and a synthesis stage; and in the synthesis stage of the chitosan polymer, the natural chitosan is subjected to chemical cross-linking and ion cross-linking with the genipin and the glycerol-2-disodium phosphate respectively, and the gelatinous chitosan polymer is obtained. The method is simple in operation, the adopted materials are natural and nontoxic and are conveniently obtained, and the chitosan polymer produced by using the method has good stability and can be used as the medical bioengineering scaffold and thecarrier carrying the active growth factors.

The present invention refers to cleaning and bleaching procedures, in which it is used bleaching solutions containing water, disodium phosphate dodecahydrate and/or diphosphonic-1,1-hydroxyethane-1 acid and/or phosphoric acid at the 75% of nutritional value, said solutions can be used for both, household and industrial purposes.

Disclosed is a method for removing green algae in the middle and late culture stages of Porphyra yezoensis. The method is characterized by comprising (1) preparing 50-100ml of 10% sodium hypochlorite solution, adding cleaned and disinfected seawater to reach a volume of 1L, adding trisodium phosphate and disodium phosphate at molar ratio of 3:1 to the above solution, and adjusting pH to 9.0-9.5 for later use; (2) during the culture process after nori mesh screens are placed into the sea (i.e. from September 21 to April of the next year), performing smear operation in the sea; (3) during the process to clear green algae, adding analytical grade citric acid to the solution of step (1) to allow pH value of the solution to be about 5.0-5.5; (4) smearing the solution obtained in step (3) in batches every day to green algae attached to mesh screens, raft frames and cables so that the damaged green algae break under the effect of seawater flow and enter the sea; and (5) smearing with the solution obtained in step (3) once every two months. The method of the invention can remove green algae attached to mesh screens, raft frames and cables in the middle and late culture stages of Porphyra yezoensis.

The present invention discloses a sodium pyrophosphate production technology, taking a wet-process phosphoric acid as the material. The steps are as following: A. Vitriol is added to a phosphorite to produce the wet-process phosphoric acid. B. A sodium hydroxid or a sodium salt is added to the wet-process phosphoric acid to produce a ground paste containing a sodium dihydrogen phosphate. C. The ground paste produced from the step B is filtrated and a clear liquid is collected. D. Ammonia is added to the clear liquid to produce the ground paste containing a composite NaH2PO4.NH3. E. The ground paste is cooled and concentrated to make the composite be crystal. F. The concentrated ground paste is filtrated to collect the composite crystal. G. The composite crystal is heated to make the NH3 in the composite volatilize. The sodium dihydrogen phosphate crystal is produced. H. The sodium dihydrogen phosphate crystal and the sodium hydroxid react, which produces a disodium phosphate. I. The disodium phosphate is converged, which produces the sodium pyrophosphate. The present invention has the advantages of low integrative energy consumption and low production cost.

The invention discloses an extraction method of ginger essential oil. The method comprises the following steps: preparing ginger powder: slicing fresh ginger, soaking the sliced ginger in a 0.5-0.9wt% starch solution for 10-15min, drying and grinding the sliced ginger, and filtering obtained powder through a sieve of 60-80 meshes; preparing enzymatic hydrolysate: adding a de-ionized liquid 1-ethyl-3-methyl imidazole acetate ([Emim]OAc) to a disodium hydrogen phosphate-citrate buffer solution to obtain an ionic liquid system; adding the ginger powder to the ionic liquid system, controlling a material-to-liquid ratio at (1: 10)g/ml-(1: 20)g/mL, adding cellulase which is 2000-4000U/g in enzyme activity ratio and enzymatically hydrolyzing for 3-5h at 40-50 DEG C; and 3) essential oil extraction: and implementing enzyme deactivation to the system in a water bath after the reaction, ultrasonically extracting for 5-10min, conducting microwave treatment, filtering through gauze, centrifuging, standing and taking the de-ionized liquid on lower layer, spin-steaming, collecting oily matters having intense fragrance and drying the oily matters through anhydrous sodium sulfate to obtain the ginger essential oil.

The invention provides a toilet deodorizing scale inhibitor. The toilet deodorizing scale inhibitor comprises polyethylene glycol, polyacrylamide, polyoxyethylene nonylphenyl ether, propanediol, octadecanoic acid, sodium bicarbonate, p-dichlorobenzene, disodium phosphate, an essence (lemon essence) and deionized water. Sodium bicarbonate easily reacts with ammonia to produce an odorless carbonate substance which has the function of deodorizing; the anti-static surfactant can avoid the occurrence of new dirt; polyethylene glycol can form a film on the surface of water to seal and cover residual stink; and propanediol is a good adsorbent to harmful gases such as hydrogen sulfide.

The invention discloses a method for treating waste water generated in ionic rare earth production. The method includes (1) feeding sodium carbonate into the waste water, keeping the pH (potential of hydrogen) value to range from 7.5 to 8.5, mixing the sodium carbonate with the waste water for 10 to 25 minutes, settling the mixture for 15 to 35 minutes, separating sediment and enabling calcium ion removal rate to reach 98% at least; (2) regulating the pH value of the mixture to range from 8.5 to 9.5 by supernate after sedimentation, simultaneously feeding magnesium chloride and sodium hydrogen phosphate into the mixture according to a ratio of n(Mg):n(N):N(P) of (1.5-2):(1-1.5):(1.2-2), mixing and stirring the mixture for 20 to 30 minutes, settling the mixture for 15 to 30 minutes, separating mud from water; and (3) repeating the step (2) once, regulating the pH value to range from 6 to 9 by the aid of hydrochloride acid after settling and water draining are performed in a secondary MAP (magnesium ammonium phosphate) method, then removing salt by a reverse osmosis membrane, and recycling drained water for production. The quantity of the fed sodium carbonate ranges from 105% to 120% of the molar concentration of calcium ions. Reveres osmosis concentrated liquor is used as an industrial salt raw material to be recycled after being dried. The method has the advantages of low cost, thorough and short reaction process, small size of reaction device, simple equipment and the like.

The invention provides a method for preparation of Combretastatin A-4 disodium phosphate. The method carries out the synthesis according to the synthesizing route shown on the right, wherein X is chlorine or bromine; are selected from tert-butyl, triphenyl methyl, 2-cynaoethyl, benzyl, phenyl, 4-nitrophenyl, 4-nitrobenzyl and 2-nitrobenzyl, R1 and R2 can be identical or different substituting groups. The method adopts bis-alkoxyl phosphoryl halide as the phosphorylation reagent, which is inexpensive and easy to acquire. Catalyst DMAP is added in the reaction to milden the reaction condition and stabilize the reaction temperature. The reaction time is short and the operation is simple. The phosphorylation intermediate needs no purification. The invention also has the advantages of high yield and quality of product and easy industrial production.

The invention discloses an anti-wrinkle antibiotic finishing agent as well as a preparation method and application thereof. The anti-wrinkle antibiotic finishing agent comprises 0.8-2.6wt% of azelaic acid, 1.6-3.2wt% of sodium hydrogen phosphate, 2.5-4wt% of carboxymethyl chitosan, 3.3-5.6wt% of hydroxypropyl-beta-cyclodextrin, 3-6wt% of a perilla frutescens ethyl acetate extract, 3.5-7wt% of a rhizoma kaempferiae ethanol extract, 6-12wt% of polyglycerol monooleate and the balance of water. The preparation method comprises the following steps: (1) preparing the perilla frutescens ethyl acetate extract; (2) preparing the rhizoma kaempferiae ethanol extract; and (3) mixing and stirring the components according to the percentage by weight, and shearing, thereby obtaining the anti-wrinkle antibiotic finishing agent. The anti-wrinkle antibiotic finishing agent has the advantages of good anti-wrinkle effect, good antibiotic effect and wide application range.

The invention discloses a preparation method of modified starch for wastewater treatment, and belongs to the field of starch. According to the preparation method, a water treatment agent is provided through modification with the modified starch as a natural high-molecular carbohydrate; the modified starch is obtained by modifying potato starch by utilizing a potassium hydroxide and urea mixed solution, a disodium phosphate oxygen and citric acid buffer solution, a cross linking agent; carbon bisulfide and the like; carbon bisulfide is utilized for acting on the starch, so that precipitation is easy; the modified starch has an efficiency of metal ion displacement, so as to remove copper, chromium, zinc, and lots of heavy metal ions in the industrial wastewater; not only can heavy metals be recovered, but also the modified starch is nontoxic and harmless to environments, and is free of secondary pollution to the environments.

The invention relates to a stable parecoxib sodium pharmaceutical composition for injection. The pharmaceutical composition specifically comprises parecoxib sodium and an additive for injection, wherein disodium hydrogen phosphate and sodium dihydrogen phosphate are used as buffer agents, and phosphoric acid/sodium hydroxide is used as a pH regulator. The medicine composition is feasible in production process, stable and controllable in quality, low in irritation on the skin, convenient to transport and store and capable of providing reasonable preparation prescription and preparation process for clinical medication, and easily realizes industrialization.

The invention relates to a rapid measurement reagent for manganese concentration in water and a use method thereof. The rapid measurement reagent for the manganese concentration in water comprises a reagent A and a reagent B in a mass ratio of 1:1, wherein (1) the reagent A comprises the following components in percentage by weight: 5.0-15.0 anhydrous potassium pyrophosphate, 10.0-30.0 disodium hydrogen phosphate, 0.5-5.0 citric acid and 60-80 anhydrous sodium sulphate; (2) the reagent B comprises the following components in percentage by weight: 5-25 potassium periodate and 75-95 potassium chloride. The use method of the rapid measurement reagent comprises the following steps: adding the reagent A to a water sample to be measured, adding the reagent B after the reagent A is dissolved; standing for 10 minutes; and comparing colors with a standard colorimetric card, a colorimetric disc or a colorimetric meter, and reading the manganese concentration. The invention has the advantages ofsimple and convenient operation, accurate results, low price, convenient transportation and carrying, on-site measurement suitability, and the like.

The invention discloses a method for dilution crystallizationelution and crystallization of cytidine 5'-disodium phosphate. An organic solvent of 0.5-3.0 time(s) of aqueous solution of cytidine 5'-disodium phosphate is added as an anti-solvent into the aqueous solution of cytidine 5'-disodium phosphate with the pH value of 7.0-9.0 and the concentration of 10-300g/L, mixing is performed at temperature of 10-40 DEG C and at a controlled speed of 50-230rmp, suction filtration is performed after complete crystallization, the crystal is washed with ethanol, and vacuum drying is performed to obtained the cytidine 5'-disodium phosphate crystal. By adopting the method, the final product quality can be improved significantly, and the yield of the crystalline product can be increased stably. Moreover, the particle size of the crystal can be controlled by changing the mixing speed or temperature for crystallization. The method has the advantages of simpleness in operation and good repeatability and is suitable for industrial production of the cytidine 5'-disodium phosphate.

The invention relates to anti-shakeout foundry molding sand, which is prepared from the following raw materials by weight: 10-15 parts of yellow loam, 4-6 parts of shell powder, 15-20 parts of vermiculite, 13-17 parts of magnesite fine powder, 1-1.5 parts of zinc dialkyl dithio phosphate, 3-4 parts of sulfurized calcium alkyl phenolate, 2-3 parts of aluminum silicate ceramic fibers, 7-10 parts of organic bentonite, 2-3 parts of disodium phosphate dodecahydrate, 1-2 parts of citric acid monomethyl ester, 200-220 parts of clay, a proper amount of water, and 20-30 parts of an auxiliary agent. According to the anti-shakeout foundry molding sand of the present invention, the clay is used so as to provide advantages of suitable particle size, good gas permeability, good fluidity and good dispersion, and the casting surface is smooth, such that the recycling can be achieved; and the aluminum silicate ceramic fibers are used, such that the strength of the clay particles is increased, and advantages of breaking resistance, good collapsibility and shakeout preventing are provided.

A process for preparing sodium tripolyphosphate includes adding waste phosphoric acid to neutralizing reactor, steam heating while adding sodium carbonate under stirring until 82 deg.C and pH=8+/-1, adding liquid sodium hydroxide until 90 deg.C and pH=12+/-1, stirring for 5-20 min, depositing, transferring it to another neutralizing reactor, adding waste sodium carbonate, adding phosphoric acid and sodium hydroxide while regulating K=3.0+/-0.1, adding ammonium nitrate, filtering and dewatering polymerization.

Shelf stable cheeses, especially shredded cheeses, and the manufacture thereof. Cheeses of the invention have good melting properties, are microbiologically safe and resistant to the growth of mold and pathogens when stored at room temperature, and can maintain physical integrity when subjected to temperature abuse. The cheese may be comprised of a mixture of salts (e.g., sodium chloride, disodium phosphate, sodium hexametophosphate, sodium alginate, titanium dioxide, sorbic acid, and the like), starch (e.g., waxy maize and the like), water, cheese, and cheese for manufacture.

This invention relates to a high cell density cultivation mehtod of a lactic acid bacterium for pickles, wherein: the conventional Lactobacillus plantarum being applied as the seed strain, activated by routine method for enlarging cultivation, inoculated into fermentating culture media prepared by routine method with the characteristic composition of 0.2-0.3% sodium citrate, 0.2-0.3% disodium phosphate, 0.1-0.2% monosodium orthophosphate and pH 6.3-6.6, during the cultivation process, keeping the pH stable between 5.8-6.2 by flowing ammonia soluthion, after 20h post cultivation, adding 500ml-700ml fresh culture meida, centrifuging, adding recombinant protective agent comprising 10-15% skimmed milk, 5-7% glutavene, 2-3% glycerin and 7-8% maltose, and lyophilizing. This method is characterized of high performance and liability, high concentration of active lactic acid bacteria in the culture, and overcoming the damage and death problems of part of microorganism cells during the lyophilizing process.

The invention relates to a preparation method of a high-viscoelasticity injection composed of glucosamine and sodium hyaluronate. The injection mainly includes the components of glucosamine sulfate/sodium chloride double salt and the sodium hyaluronate with sodium dihydrogen phosphate and disodium hydrogen phosphate, as auxiliary materials, being used as a pH regulator. Sodium chloride is employed as an osmotic pressure regulator. The injection is greatly reduced in hygroscopicity and enhanced in flowability, is improved in stability, has good treatment effects, low drug resistance rate and less adverse reaction, and can be used in intra-articular injection therapy on arthritis.

The invention relates to an antifreeze liquid film for pulverized coal transport and a preparation method and the application thereof. Industrial calcium chloride, sodium benzoate, sodium hydrogen phosphate, sodium nitrite, triethanolamine and ethanol are used as raw materials to prepare an antifreeze liquid component A. Anionic emulsified petroleum asphalt, anionic emulsified neoprene latex, anionic emulsified styrene-butadiene latex, defoaming agent and industrial water are used as raw materials to prepare asphalt polymer film forming agent component B. The component A and the component B are respectively sprayed on wall faces of a carriage by a spray gun, the component B meeting the component A can automatically precipitate to form a solid asphalt polymer film attached onto an antifreeze liquid layer of the component A, so that the antifreeze liquid film for pulverized coal transport is formed. The antifreeze liquid film effectively prevents antifreeze liquid from flowing from the wall surface of the carriage to the bottom, moisture in transported coal is prevented from dispersing to the carriage wall, and gathering and the like of a great quantity of antifreeze liquid at the carriage bottom can be reduced. Further, utilization of the antifreeze liquid film saves energy resources, shortens wagon transfer time and lowers transport cost.

The invention relates to a stabilized recombinant human interferon alpha1b water solution, where the water solution with a total volume of 1000ml contains, therapeutic effective dose of interferon alpha1b, 2.5-27.0g of sodium chloride, 0.15-0.60g of citric acid, 1.5-6.0g of dodecahydro-disodium phosphate, and 5-20g of human blood albumin.