571 results about "Disodium EDTA" patented technology

Disclosed is a topical skin care composition that includes water, silymarin, hydrolyzed algin, palmitoyl tripeptide 8, ceramide 2, pomegranate extract comprising pomegranate sterols, glycerin, disodium EDTA, caprylic / capric triglyceride, shea butter, C12-15 alcohols benzoate, dimethicone, glyceryl stearate and PEG 100 stearate, cetyl alcohol, stearyl alcohol, stearic acid, butylene glycol, caprylyl glycol, and (s) a mixture of acrylamide / sodium acryloyldimethyl taurate copolymer, isohexadecane, and polysorbate 80.

The invention discloses a trace element solution, which comprises at least one metal selected from the group comprising selenium, copper, zinc, manganese and chromium and which comprises a concentration of the metal(s) of at least 60 mg / ml. The solution further comprises at least one compound selected from the group comprising iodine, potassium iodide, sodium iodide, iron, iron chloride, zinc oxide, manganese sulphate, sodium selenite, copper carbonate, sodium carbonate, anhydrous disodium EDTA and sodium hydroxide. The trace element solution is prepared by a method consisting essentially of the steps of preparing a MnCO3 mixture in a container; adding an EDTA / NaOH mixture to the container and subsequently adding at least one metal compound; and adding Na2SeO3 to the container to obtain the trace element solution. The method also comprises the step of adding CrCl3.6H2O to the trace element solution.

The invention relates to an aqueous culture method of anoectochilus. In the method, anoectochilus germchits are cleaned and sterilized, transplanted in a culture dish and cultured in a culture groove filled with an aqueous culture solution; each 10L of aqueous culture solution contains the following components: 650 to 800mg of calcium nitrate tetrahydrate, 50 to 60mg of ammonium nitrate, 280 to 350mg of potassium nitrate, 100 to 130mg of potassium dihydrogen phosphate, 350 to 380mg of magnesium sulfate, 0.5 to 0.8mg of potassium iodide, 2 to 5mg of manganese sulfate, 0.2 to 0.3mg of sodium molybdate, 0.1 to 0.2mg of cobalt chloride, 2 to 4mg of boric acid, 0.5 to 1mg of zinc sulfate, 0.3 to 0.5mg of copper sulfate and 3 to 5ml of iron salt solution, wherein the iron salt solution is prepared by mixing water, green vitriol and ethylenediamine tetraacetic acid disodium. The method has the advantages of lowering production cost, simplifying production process, improving the growth of anoectochilus plants and improving the survival rate of anoectochilus plants.

The invention relates to foaming agent type shampoo which comprises (30 percent) 20 percent to 40 percent of lauryl alcohol polyoxyethylene ether sulpho succinate monoester disodium salt, (30 percent) 20 percent to 40 percent of lauroyl sodium sarcosinate, 0.1 to 0.5 percent of disodium EDTA, 1 to 5 percent of sodium lactate, (40 percent) 1 to 5 percent of polyquat-7, (30 percent) 2 to 5 percent of acrylate copolymer, 1 to 6 percent of PEG-12 dimethyl silicone, 0.1 to 1 percent of aromatic oil or essence, 0.01 to 0.3 percent of citric acid, and 0.04 to 1 percent of preservative agents, and the rest is deionized water. the foaming agent type shampoo is characterized in that foam is squeezed out through a mousse pump head, and the shampoo is not centralized at the top of the head but applied and diffused to other parts, so that the contact of chemical substances and the scalp can be reduced, the probability of furfur, calvities and balding can be reduced, and the effects of economy, environmental friendliness and no side effect can be achieved.

The invention discloses a skin barrier repairing preparation. The preparation is prepared from the following components: deionized water, sucrose stearate, phytosteryl isostearate, vitamin E, glycerinum, butylene glycol, 1,2-pentylene glycol, octyldodecanol, polydimethylsiloxane, hydrogenated polyisobutene, oleic acid, linoleic acid, ceramide 2, ceramide 3, ceramide 6II, sodium hyaluronate, xanthan gum, disodium EDTA, acrylates C10-30 alkyl acrylate crosslinked polymer, allantoin and sorbitan caprylate. The invention further provides a method for preparing the skin barrier repairing preparation. According to the preparation method, the problem of dissolving compound ceramide can be solved, the impact of ceramide crystallization on stability under a low-temperature condition can be reduced, the stability of the preparation can be improved, and other skin repairing components can be added and compounded with the compound ceramide. The skin barrier repairing preparation has an excellent product formula stability and a multiple repairing effect on the skin barrier.

The invention discloses a leave-on facial mask with added pearl hydrolysate liposome, prepared by mixing, heating and homogenizing deionized water, pearl hydrolysate liposome, glycerol, butanediol, trimethylglyine, cyclohexasiloxane, isononyl isononanoate, polydimethylsiloxane, acrylic acid (ester) / C10-30 alkyl acrylate crosslinked polymer, triethanolamine, sodium acrylate / dimethyl propylene amine taurine multipolymer, allantoin, methyl hydroxybenzoate, propyl hydroxybenzoate, phenoxyethanol, disodium EDTA (Ethylene Diamine Tetraacetie Acid), hyaluronic acid and essence. The leave-on facial mask with added pearl hydrolysate liposome improves the nourishing effect of the facial mask on the face by effectively utilizing effective components in the pearl hydrolysate liposome, has the functions of caring the skin, keeping moisture, nourishing, whitening the skin, and the like, takes the action of effectively caring and nourishing the skin, preventing skin aging and tendering the skin, and has optimal use performance.

The invention discloses a two-in-one shampoo which comprises the following components: deionized water, ammonium laureth sulfate, ammonium lauryl sulfate, cocoamidopropyl betaine, sodium lauroamphoacetate, glycol distearate, polydimethylsiloxane, polyquaternary ammonium salt-7, essence, disodium EDTA (ethylene diamine tetraacetic acid), acrylate / C10-30 alkanol acrylate crosslinked polymer, cetanol, sodium chloride, Guar hydroxypropyltrimonium chloride, panthenol, methylisothiazolinone and methylchloroisothiazolinone. The invention also provides a preparation method of the two-in-one shampoo. According to the invention, the formula and the process are optimized; through the process of emulsifying grease in the production process, the defoaming action of the grease is reduced, the foaming efficiency of surfactant is enhanced, the consumption of the main surfactant in the formula is reduced by 10%, the preparation time is shortened, and the energy consumption is reduced; and meanwhile, better product performance is achieved.

The invention relates to foaming agent type shampoo which comprises (30 percent) 20 percent to 40 percent of lauryl alcohol polyoxyethylene ether sulpho succinate monoester disodium salt, (30 percent) 20 percent to 40 percent of lauroyl sodium sarcosinate, 0.1 to 0.5 percent of disodium EDTA, 1 to 5 percent of sodium lactate, (40 percent) 1 to 5 percent of polyquat-7, (30 percent) 2 to 5 percent of acrylate copolymer, 1 to 6 percent of PEG-12 dimethyl silicone, 0.1 to 1 percent of aromatic oil or essence, 0.01 to 0.3 percent of citric acid, and 0.04 to 1 percent of preservative agents, and the rest is deionized water. the foaming agent type shampoo is characterized in that foam is squeezed out through a mousse pump head, and the shampoo is not centralized at the top of the head but applied and diffused to other parts, so that the contact of chemical substances and the scalp can be reduced, the probability of furfur, calvities and balding can be reduced, and the effects of economy, environmental friendliness and no side effect can be achieved.

The invention discloses body lotion containing a Nostoc sphaeroids extract. The body lotion is prepared by using the following raw materials: Nostoc sphaeroids extract, glycerol, caprylic / capric triglyceride, hydrogenated polyisobutene, avocado ester, cetostearyl alcohol, glycine betaine, glyceryl polyether-26, polydimethylsiloxane, compound of cetostearyl alcohol olivate and sorbitan olivate, compound of glyceryl stearate and PEG-100 stearate, peony seed oil, tremella polysaccharide, tocopheryl acetate, compound of water, butanediol, centella extract, Polygonum cuspidatum root extract, Scutellaria root extract, tea extract, Glycyrrhiza glabra root extract, Chamomilla recutita flower extract and rosemary leaf extract, oat beta-glucan, allantoin, carbomer, triethanolamine, disodium EDTA, essence and the like, wherein the solvent is water. The body lotion disclosed by the invention can quickly replenish nutrients needed by body skins, enhance elasticity and relieve phenomena such as roughness, dry itching, chap and scurf formation caused by aridness.

The invention discloses a whitening cream and a preparing method thereof, which aims to provide a stable whitening cream with high safety, good skin whitening effect; the technical scheme is: the whitening cream is made from, by weight percentage, 0.5-0.3% of tranexamic acid, 0.5-3.5% of nicotinamide,4- 0.2-1.5% of potassium methoxysalicylate, 0.005-0.04% of glycyrrhiza glabra root extract, 0.5-2% of leucojum extract , 0.1-1.5% of saxifraga stolonifera extract, 3-6% of emulsifier, 2-5% of co-emulsifier, 10.1-23.2% of grease, 0.05-0.1% of antioxidant, 0.05-0.1% of disodium EDTA, 0.2-0.5% of allantoin, 4-10% of polyhydric alcohols, 2.25-8.55% of humectant, 0.2-0.5% of aqueous thickener, 0.5-1% of thickened stabilizer, 0.5-3% of anti-allergic conditioner, 0.8-1% of preservative, 0.5-1.2% of pigment and the margin is water; the invention belongs to the field of cosmetics technology.

The invention discloses a fish preservative. The fish preservative consists of the the following components in percentage by weight: 5-8% of trehalose, 0.1-0.5% of sodium phytate, 5-10% of pullulan, 0.2-0.5% of chitosan, 3-5% of disodium EDTA and the balance being purple perilla liquid. The fish preservative disclosed by the invention has good color protection, freshness preservation, water retention, deodorization and anti-corrosion functions, is capable of greatly prolonging the preservation time of fishes under the premise of ensuring the flavor and the mouth feel of the fishes and is high in food safety. The invention also discloses a preparation method of the fish preservative, mainly comprising the following steps: (1) preparing purple perilla liquid, namely putting perilla leaves into water to cook and filter so as to obtain filtrate which is the purple perilla liquid; (2) blending, namely uniformly mixing the trehalose, the sodium phytate, the pullulan, the chitosan, the disodium EDTA and the purple perilla liquid in a ratio to obtain the fish preservation. The preparation method disclosed by the invention is simple in processing step, low in production cost and easy to operate.

The invention discloses a tuna fresh keeping method to solve a problem that present tuna fresh keeping methods reduce the quality of tuna. The method mainly comprises the following steps: 1, preprocessing tuna bodies; 2, immersing tuna in a composite fresh keeping agent; 3, carrying out surface air drying; and 4, packaging, and refrigerating. The composite fresh keeping agent comprises, by mass, 5-10% of mycose, 0.03-0.05% of nisin, 0.05-0.1% of konjak mannan, 0.1-0.3% of sodium phytate, 2-3% of calcium chloride, 0.2-0.5% of chitosan, 3-5% of disodium EDTA, 0.3-0.5% of sodium erythorbate, 0.3-0.5% of sodium citrate, and the balance of a propolis water extraction liquid. The fresh keeping method has the advantages of easy implementation, high efficiency, low cost, good fresh keeping effect, great prolongation of the fresh keeping time of tuna, maintenance of the original eating quality of tuna, good safety, facilitation of improvement of the economic benefit of ships, and suitableness for being popularized and applied.

The invention provides a sun-blocking and moisturizing composition and a preparation method thereof. The composition is composed of following components including, by weight, 4-6% of propylene glycol laurate / ethyecellulose / propylene glycol isostearate, 1-2% of shea butter, 0.2-0.3% of tocopheryl acetate, 2% of ethylhexyl methoxycinnamate, 2.5% of butyl methoxydibenzoylmethane, 3-4% of isononyl isononanoate, 2% of decamethylcyclopentasiloxane, 1% of polydimethylsiloxane, 0.3-0.4% of an acrylic acid (ester) / C10-30 alkanolacrylate crosslinking polymer, 0.1% of xanthan gum, 0.02% of disodium EDTA, 0.02% of sodium hyaluronate, 3-4% of butanediol, 3-4% of glycerin, 3% of glyceryl polyether-26, 0.15-0.2% of an aminomethyl propanol / water premixed substance, 3% of water / butanediol / purslane extract, 0.5% of a bacteriostatic agent, 2% of a water / glycerin / phenoxyethanol / [beta]-glucan premixed substance and the balance deionized water. The sun-blocking and moisturizing composition is suitable for sensitive skin, has a touching-melt texture, can form a compact and soft residual film on a skin surface and enable active components to be absorbed better by the skin.

The invention provides a phosphorus-free graphene-oxide-containing metal surface pretreatment solution and an application method thereof. The phosphorus-free graphene-oxide-containing metal surface pretreatment solution comprises the following components in percentage by weight: 1-2% of fluosilicic acid, 0.2-1% of sodium molybdate, 1-2% of sodium nitrate, 0.6-1.2% of metal surface oxidizer, 1-2% of disodium edetate, 0.8-1.5% of tartaric acid, 0.1-0.3% of graphene oxide and the balance of water, totaling 100%. The product has the advantages of stable and excellent properties and wide application range. The added graphene oxide can effectively enhance the paint film adhesion of the conversion coating.

The invention relates to the field of polluted soil repair, particularly to a method for repairing organic polluted soil by intensifying Fenton oxidation. The method comprises the following steps: (1) selecting organic pollution soil to be repaired, grinding and crushing, and screening by using a 10-mesh steel screen; (2) adding an enhancer powdery active carbon, sodium oxalate and disodium EDTA (ethylene diamine tetraacetic acid), uniformly mixing and maintaining soil; (3) adding a catalyst ferrous sulfate, uniformly mixing and maintaining soil; (4) adding diluted industrial hydrogen peroxide, uniformly mixing, and maintaining soil. The method provided by the invention has the benefits that the active carbon powder is added to absorb organic matters so as to enhance the reaction probability of the organic matters and hydrogen peroxide; sodium oxalate is added to provide a continuous hydrogen peroxide source; ferrous sulfate is added to catalyze and enhance the oxidizing ability of hydrogen peroxide, so that the Fenton repair effect is improved; disodium EDTA is added and Fe<2+> form is controlled and maintained by virtue of a chelating effect. By virtue of the above intensifying measures, the polluted soil can be quickly and effectively repaired, so that the content of the organic matters in soil reaches national ambient air quality standard.

The invention provides a chromium-free passivation solution as well as preparation and using methods thereof. The passivation solution is prepared by dissolving a solute composed of multiple substances into deionized water, wherein the solute in the solution comprises the following raw materials according to the ratio: 60-80g / L of sodium molybdate, 5-10g / L of sodium tungstate, 2-7g / L of ethanol, 15-50g / L of acetic acid, 20-40g / L of hydrogen peroxide, 5-10g / L of ethylenediaminetetraacetic acid disodium and the balance of water. The chromium-free passivation solution is firm in adhesive force, low in porosity and corrosion-resistant.

The invention discloses a hydrogen sulfide detection sensor, a preparation method thereof, a quantitative detection method of hydrogen sulfide, and a qualitative detection method of hydrogen sulfide in cells. The preparation method comprises the following steps: (1) preparing a water solution of copper complex by mixing disodium EDTA, soluble copper salts, and water; (2) subjecting the water solution of copper complex to hydrothermal reactions, filtration, centrifugation, and dialysis to obtain a water solution of copper doped carbon quantum dots in the dialysis bag; (3) mixing the water solution of copper doped carbon quantum dots with a buffer solution to obtain the hydrogen sulfide detection sensor. The hydrogen sulfide detection sensor can carry out quantitative determination on a hydrogen sulfide solution and qualitative detection on hydrogen sulfide in cells.

The invention discloses a polypeptide essence solution for improving the skin texture. The polypeptide essence solution is prepared from propylene glycol, diglycerin, glycerin, butanediol, nicotinamide, polyethylene glycol-8, a PEG / PPG-17 / 6 copolymer, hamamelis water, a glycerin acrylate / acrylic acid copolymer, a PVM / MA copolymer, palmitoyl hexapeptide-14, tripeptide-1, acetyl hexapeptide-8, pentapeptide-3, dipeptide diaminobutyryl benzyl amide diacetate, 1,2-hexanediol, betaine, tapioca starch, an ammonium acryl dimethyl taurine / VP copolymer, carbomer, acetyl chitosamine, a white willow barkextract, papain, sodium hyaluronate, octylene glycol, collagen, PEG-40 hydrogenated castor oil, hydroxyethyl cellulose, oligopeptide-1, a wild soybean seed extract, carnosine, disodium EDTA, octyl hydroxamic acid, rosa damascene flower oil and water. The polypeptide essence solution takes polypeptide tightening molecules as a main raw material, can awaken the skin vitality, maintain the skin elasticity, enhance the tightness, ameliorate fine lines, brighten the skin color, improve the skin texture, and rejuvenate the skin.

The invention discloses liquid essential oil soap which comprises the following components: glycerin, sodium lauroyl glutamate, myristic acid, lauric acid, tocopheryl acetate, a plant origin extract and / or an animal origin extract, essential oil, lauramidopropyl hydroxy sulfobetaine, potassium hydroxide, cocoanut fatty acid diethanolamide, hydroxyethyl cellulose, allantoin, disodium EDTA, a preservative and water. The liquid oil soap has the advantages that on the basis of original soap, a large amount of glycerin, skin-care grease and pure essential oil or compound essential oil are added through technology improvement, so that effects of cleansing skin and caring skin are achieved, and the skin is maintained moisturized; since the essential oil has permeability in skin cells, the skin recovery effect is better; the essential oil is well fused with substances such as the glycerin and the skin-care grease, so that not only are the effects of controlling oil and shrinking pores as well as repairing damaged skin achieved, but also the skin is tender and silky, and the skin has no tight and dry feeling after being cleaned.

The invention discloses a method for measuring the content of magnesium oxide in iron ores, relates to a detection method, and particularly relates to a method for measuring the content of magnesium oxide in depositing iron rocks and ores. The method includes adopting sodium hydroxide as a fusing agent to melt an iron ore sample in a high-temperature furnace and leading magnesium ions to enter solution after acidification by aid of nitric acid; and adding benzilic acid, ethylene glycol tetraacetic acid (EGTA) solution and triethanolamine to mask metal ions of titanium, iron, aluminum, alkaline earth and the like, generating magnesium hydroxide deposit in alkaline solution with the pH (potential of hydrogen) larger than 12, depositing to generate hydrochloric acid solute after filtering, using acid chrome blue K and naphthol green B as indicators in solution with the pH of 10, adopting ethylene diamine tetraacetic acid (EDTA) standard solution for titration, and obtaining the content of the magnesium oxide. The method has the advantages of simplicity, convenience, speediness, low cost, fine reproducibility and the like.

The invention relates to an earth pressure balance shield foaming agent and a preparation technology thereof. The earth pressure balance shield foaming agent is prepared from 4-15% by weight of sodium dodecyl sulfate, 1-10% by weight of cetyltrimethylammonium chloride, 2-8% by weight of cocamidopropyl betaine, 1-5% by weight of dodecyldimethylamine oxide, 0.1-0.5% by weight of disodium ethylene diamine tetraacetate, 0.1-2.0% by weight of a tackifier and the balance water. The earth pressure balance shield foaming agent has a simple formula and high effects, and utilizes cetyltrimethylammonium chloride with excellent permeability, flexibility, emulsification effects and sterilization performances as a cationic surfactant which can be mixed with other surfactants. The earth pressure balance shield foaming agent is environmentally friendly, has excellent permeability and lubricity and can effectively improve excavated soil fluidity and watertightness.

The invention relates to a cleaning agent for a crystal lamp and a method for preparing the cleaning agent for the crystal lamp. The cleaning agent is mainly used for cleaning the crystal lamps of home and hotels and can also be used for cleaning other glass products. The cleaning agent is used for overcoming the defects of the prior art, has efficient cleaning capability and quickly disintegrates dust and dirty marks which are adhered to crystal lighting, disassembling, assembling and washing are not needed, so that time and labor are saved; the production technology is simple, and the production process is not dangerous; and after the cleaning agent is used, no water mark is left on crystal lighting surfaces. The cleaning agent selects a formula as follows by weight percent: 1.50-4.50 of coconutt diethanol amide, 1.0-3.0 of fatty alcohol-polyoxyethylene ether aeo-9, 2.0-4.0 of sodium alcohol ether sulphate, 1-3 of propylene glycol n-propyl ether, 3-5 of 2-methyl-2,4-pentanediol, 10.0-15.0 of ethanol, 8.0-10.0 of isopropyl alcohol, 3.0-5.0 of citric acid, 1.0-3.0 of ethylenediaminetetraacetic acid disodium salt, an appropriate amount of essence and the balance of deionized water.

This invention discloses a way of producing the polyacrylamide with low molecular weight. This method adopts aqueous solution polymerization, chooses isopropyl alcohol as chain transfer agent and heat transfer agent and disodium edta (EDTA) as stabilizer, carries through polyreaction between 80deg.C and 85deg.C by adding acrylamine solution and initiator solution continuously and respectively and synthesizes the polyacrylamide with low molecular weight of between 2.0X10000 and 12X10000. It overcomes the low conversion of now-existing precipitation polymerization in producing the polyacrylamide with low molecular weight. It is appropriate to be emulsifying agent and adhesive with high molecular weight.

The invention discloses a method for preventing fruit cracking of melons. The method comprises the following steps of: spraying equal mass solutions of 800-1000 times of nucleotides and 800-1000 times of cytokinins on the melons and leaves per 3-5 days; or spraying anti-cracking agents on the melons per 3-5 days on the basis of 500-1000g / mu, wherein the anti-cracking agents are composed of 1-2 weight parts of sodium borates, 0.5-4 weight parts of CaCl2, 0.2-1.5 weight parts of sodium selenate, 3-5 weight parts of zinc gluconate, 20-40 weight parts of sodium silicate and the balance of water; or spraying the anti-cracking agents on the melons and the leaves per 1-2 days on the basis of 200-300g / mu, wherein the anti-cracking agents are composed of the following components by weight percent: 0.5%-1% of disodium octaborate tetrahydrate, 10%-15% of EDTA (ethylene diamine tetraacetic acid) calcium complex disodium salt, 13%-15% of EDTA magnesium complex disodium salt, 5-8% of isopentennyladenine, 3%-4% of disodium EDTA-copper, 0.3%-0.6% of sodium molybdate dihydrate, 1.5-3.5% of boric acids and the balance of water. According to the method provided by the invention, the fruit cracking is effectively prevented and the yield and quality are both high.

The invention discloses a water quality detecting agent for residual chlorine, which relates to a scene quantitative detection technology for residual chlorine concentration in a water body. The water quality detecting agent is mainly formed by mixing an N,N-diethyl-1,4-phenylenediamine, disodium hydrogen phosphate, monopotassium phosphate, edetic acid disodium and the like. In use, the water quality detecting agent is directly dissolved in a 10-milliliter water sample and then is mixed with the sample for 1-2 minutes to be dissolved, and a spectrophotometer or a liquid chromometer is utilized to measure. The water quality detecting agent provided by the invention is convenient to carry and easy to store, any other reagent is not needed when the detecting agent is in use, the result is exact and reliable, and the water quality detecting agent is suitable for scene quantitative detection on residual chlorine concentration of surface water, life and hospital wastewater, ground water, tap water, drinking water, swimming pool water and the like.

The invention provides a deep moisturizing facial cleanser. The deep moisturizing facial cleanser comprises the following components and raw materials in percentage by weight: 1% to 40% of a surfactant, 1% to 60% of a skin conditioning agent, 0.5% to 30% of a thickener, 0.01% to 15% of triethanolamine, 0.01% to 6% of a preservative, 0.01% to 5% of disodium EDTA, 0.01% to 5% of essence and the balance of deionized water which is used as a solvent. The deep moisturizing facial cleanser provided by the invention can effectively remove dirt and aged cutin on skin and clean the skin, and further can nourish and moisturize the skin, retain moisture and reduce moisture loss, thereby being beneficial to enabling the skin to be moistened, plump, smooth and delicate and capable of strengthening skin defense capabilities to effectively protect the skin of a person.

The invention discloses preservative-free skin moisturizer composition and a preparation method thereof. The skin moisturizer composition is prepared from components in percentage by weight as follows: 10%-40% of oily substances, 1%-5% of an emulsifier, 0.1%-5% of a thickener, 1%-15% of polyols, 0.01%-0.2% of sodium hyaluronate, 0.1%-3% of glucan, 0.05%-0.3% of allantoin, 0.1%-1% of glycerol caprylate, 0.1%-2% of undecynol glyceride, 0.01%-0.2% of disodium EDTA (ethylene diamine tetraacetic acid), 0.1%-5% of a plant composition extract, 0.01%-1% of lactic acid, 0.01%-0.5% of essence and the balance of water. The prepared skin moisturizer has a good moisturizing effect, does not contain any preservative regulated in Safety and Technical Standards for Cosmetics (2015) and has small irritation and is safer to a human body.

The invention relates to a detection method, in particular to a method for determining the alumina content in deposited iron briquette rock ore. The method includes: using potassium hydroxide as a fusing agent to fuse an iron ore sample in a high temperature furnace, conducting acidification by nitric acid, letting aluminum ions enter the solution, adding mandelic acid and excess ethylenediamine tetraacetic acid disodium salt (EDTA) standard solution to shelter titanium, iron, aluminum and other metal ions, and in an acetic acid-sodium acetate buffer solution with pH of 4, taking 1-(2-pyridylazo)-2-naphthol as an indicator, carrying out titration on the residual ethylenediamine tetraacetic acid disodium salt (EDTA) standard solution by means of a copper sulfate standard solution, adding a sodium fluoride solution to replace the ethylenediamine tetraacetic acid disodium salt (EDTA) standard solution cooperating with the aluminum ions, and then carrying out titration by a copper sulfate standard solution, thus obtaining the alumina content. The method provided in the invention has the characteristics of simplicity, rapidity, low cost and good repeatability, etc.

A method of preparing a trace element solution includes the steps of providing at least one EDTA-complex, providing a sodium selenite solution, and combining the EDTA-complex(es) and the sodium selenite solution to form a trace element solution. An EDTA complex is prepared by using disodium EDTA or EDTA acid, selenium, and any other suitable mineral.

The invention discloses a phalaenopsis brightening mask which is composed of the following components in percentage by mass: 0.64-0.96% of phalaenopsis extract, 5-8% of glycerol, 4-6% of propanediol, 3.6-5.4% of butanediol, 1-3% of sodium ascorbate phosphate, 0.35-0.532% of bis(hydroxymethyl)imidazolidinyl urea, 0.2-0.4% of PEG-60 (polyethylene glycol-60) hydrogenated castor oil, 0.2-0.4% of hydroxyethyl cellulose, 0.05-0.15% of disodium EDTA (ethylene diamine tetraacetate), 0.05-0.15% of essence and the balance of water. By using the phalaenopsis extract as a skin conditioner, the sodium ascorbate phosphate as a freckle remover and PEG-60 hydrogenated castor oil as a surfactant, the phalaenopsis brightening mask has the functions of lightening melanin and brightening the skin, and implements the effects of beauty treatment and skin care.