31 results about "Iodate salt" patented technology

The invention relates to a detection method for trace forbidden or restricted iodate and bromate in a cosmetic, and aims to provide the method which has the characteristics of high specificity, high anti-interference capacity and high accuracy. According to the technical scheme, the ion chromatography method for detecting iodate and bromate in the cosmetic comprises the following steps of: (1) preparing a sample: weighing a certain amount of cosmetic and placing in a centrifuge tube, and adding ultra-pure water to keep constant volume for later use; or adding the ultra-pure water and then ultrasonically oscillating, then loading on a centrifuge for centrifugal separation, taking supernatant and keeping constant volume for later use by using the ultra-pure water; or adding a certain amount of methylene dichloride, uniformly mixing through vortex, adding the ultra-pure water, ultrasonically oscillating, then loading on a centrifuge for centrifugal separation, taking the supernatant and keeping constant volume for later use by using the ultra-pure water; (2) enriching and purifying: taking the supernatant and collecting eluent through a water-phase filter membrane and an RP (Reversed Phase) column; and (3) loading on a machine for detection: taking the eluent and inputting into an ion chromatograph equipped with a post-column derivation device and an ultraviolet detector for detection.

The invention discloses a natural astaxanthin-containing premix compound which comprises the following components according to weight ratio: 30-80g/kg of broken wall haematococcus pluvialis powder, 150-300g/kg of bean pulp, 150-200g/kg of calcium hydrophosphate, 150-250g/kg of mountain flour, 50-70g/kg of table salt, 0.6-0.9g/kg of nicotinic acid, 0.1-0.2g/kg of D-calcium pantothenate, 0.0016-0.0024g/kg of biotin, 7.5-12.5g/kg of choline chloride, 0.256-0.512g/kg of copper salt based on the content of copper, 1-2g/kg of ferric salt based on the content of ferrum, 1.2-2.4g/kg of zinc salt based on the content of zinc, 1.3-2.6g/kg of manganese salt based on the content of manganese, 0.02-0.04g/kg of iodate salt based on the content of iodate, 0.003-0.007g/kg of selenium salt based on the content of selenium, 20-35g/kg of methionine, 0.33-1.0g/kg of ethoxy quinoline, 1-3g/kg of phytase, 5-15g/kg of composite microecologics, 1-3g/kg of xylo-oligosaccharide and 80-120g/kg of bentonite. The natural astaxanthin-containing premix compound can remarkably improve the laying rate, reduce mortality and elimination rate, ensure proper colors of red-yolk eggs, promote the feed conversion rate, improve the production performance of laying hens and the eggshell quality, reduce the occurrence of diseases, and improve the economic efficiency.

A composition suitable for tantalum chemical-mechanical polishing (CMP) comprises about 0.1 to about 10 percent by weight of a zirconia or fumed alumina abrasive, about 0.1 to about 10 percent by weight of an alkali metal iodate salt and an aqueous carrier. The composition has a pH of at least about 10. The composition is utilized to polish a surface of a tantalum-containing substrate.

A synthetic acid composition for replacement of hydrochloric acid in industrial activities requiring large amounts of hydrochloric acid, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; a metal iodide or iodate; an alcohol or derivative thereof. Optionally, formic acid or a derivative thereof; propylene glycol or a derivative thereof, ethylene glycol glycerol or a mixture thereof; cinnamaldehyde or a derivative thereof; and a phosphonic acid derivative can be added to the composition.

The invention provides a synthesis method for preparing Tafamidis and a derivative thereof from 6-amino-m-cresol and an aldehyde compound under the action of sodium periodate and potassium permanganate. In the method, the use of an acylation reagent dichlorobenzoyl chloride and an esterification reagent (trimethylsilyl) diazomethane is avoided, and the problem that acyl chloride, a diazonium reagent, a strong acid and strong alkali additive and the like are harmful to the environment is solved; the reaction steps are few, and the total yield is high; methoxy, halogen, trifluoromethyl and the like can be well tolerated; and the iodate and the manganese dioxide after the reaction are insoluble in the reaction solution and can be well recycled, so that the pollution caused by the reaction system is greatly reduced, a more economical and environment-friendly path is provided for synthesis of Tafamidis and the derivative thereof, and the method has a huge application value.

The invention discloses a method for measuring the mixing uniformity degree of a pellet raw material, which comprises the following steps: adding iodate into a pellet raw material to be measured, andperforming uniform mixing to obtain a pellet mixed raw material; preparing an iodide salt detection solution, and taking N parts of the same amount of iodide salt detection solution from the iodide salt detection solution; randomly extracting N parts of pellet mixed samples with the same amount, uniformly mixing the N parts of pellet mixed samples with the same amount with N parts of an iodide salt detection solution to obtain N parts of a mixed solution, and adjusting the pH value of the N parts of the mixed solution to 1.4-3.4 to obtain N parts of the mixed solution with the adjusted pH value, wherein the mass ratio of iodate in a single pellet mixed sample to iodate in a single iodate detection solution is less than 1:6; respectively measuring the absorbance of the N parts of mixed liquid after the PH value is adjusted by adopting an absorbance spectrophotometric method to obtain the absorbance of each part of mixed liquid after the PH value is adjusted; and analyzing the mixing uniformity degree of the pellet mixed raw materials according to the absorbance of each part of the mixed solution after the pH value is adjusted.

The present invention relates to a process for the preparation of stable iodate-exchanged hydrotalcite with zero effluent discharge. The iodate-exchanged hydrotalcite produced is useful as iodizing agent. The invention further relates to utilization of alkaline effluent generated in the process of ion exchange of iodate into SHT so as to fully recycle the residual iodate anion and also utilize the alkali generated in the process for production of additional quantities of iodate through reaction with iodine crystals followed by electrochemical oxidation to obtain pure aqueous solution of iodate salt which can be reused for preparation of the stable iodizing agent. The process gives zero effluent discharge hence economical.

The invention discloses a method for oxidizing iodide ions into iodate by using ferrate and controlling generation of iodo-disinfection byproducts in water, and relates to the field of water treatmentmethods. The purpose of the invention is to solve the problem of the iodo-disinfection byproducts formed by iodide ions and natural organic matters existing in water during treatment in a traditionaldisinfection mode. The method comprises the following steps: adding the ferrate into a water source containing iodide ions, and carrying out an oxidation reaction to complete the method. Potassium ferrate is used as a strong oxidant to rapidly oxidize iodine ions in water into hypoiodic acid, and when the concentration of the hypoiodic acid in the system is accumulated to the maximum value, the hypoiodic acid is gradually oxidized into iodate by the potassium ferrate, so that the concentration of the hypoiodic acid is reduced, and the possibility that the hypoiodic acid reacts with organic matters to generate the iodo-disinfection byproducts is reduced. The increase of the concentration of potassium ferrate can promote the conversion of iodide ions and hypoiodic acid into iodate, the generation amount of the iodo-disinfection byproducts is small, and the method is suitable for large-scale application. The method is used for treating the iodine ion-containing water source.

The invention relates to a method for preparing nanocrystals by oxidizing low-valence iodide or iodate, which is characterized by specifically comprising the following steps: (1) preparing a reaction solution, namely dissolving 1-28g of potassium iodate or iodide into 150mL of deionized water, adjusting the pH value of the solution to be greater than 7 by using alkali, adding reaction raw materials into the pH-adjusted solution, and uniformly stirring to prepare a reaction solution; (2) carrying out oxidation treatment on the reaction solution, continuously stirring for 1-30 days under a dark normal-temperature condition, then stopping the reaction to obtain a solid in the reaction solution, and purifying the solid to obtain the nanocrystals; in the whole preparation process, the reaction is mild, and generation of toxic and harmful products is avoided.

The invention relates to a hypochlorous acid disinfectant capable of being used for low-temperature disinfection. The hypochlorous acid disinfectant is subacid electrolyzed oxidizing water containing calcium chloride and iodate, and further containing one or more of dibasic hydrogen phosphate, dihydric phosphate, carbonate, sulfate and bicarbonate.

The invention discloses wall face algae iodate salt peat powder coating paste.The wall face algae iodate salt peat powder coating paste is prepared from, by weight, 80-100 kg of lime, 6-8 kg of tissues, 8-10 kg of algae iodate salt, 30-40 kg of yellow clay, 20-30 kg of kaolin, 8-9 kg of charcoal, 6-7 kg of bamboo charcoal, 25-35 kg of sea sediment, 5-6 kg of straw ash, 20-25 kg of river sediment, 1-3 kg of gold powder, 1-3 kg of silver powder, 1-3 kg of copper powder, 2-4 kg of hydroxypropyl methyl cellulose, 1-2 kg of latex powder, 12-20 kg of magnesium chloride, 8-10 kg of caustic soda and 150-200 kg of water.The wall face algae iodate salt peat powder coating paste is green, environmentally-friendly, durable, not likely to shed or mildew, washable, moisture-proof, preserved in clear water, free of smell, radiation-resistant, antistatic, flame-retardant and pollution-free and can be widely used in the field of building decoration.

The invention belongs to the technical field of chemical industrial and provides a stable methyllithium solution and a preparation method thereof. The methyllithium solution comprises, in percentage by mass, 3%-12% of methyllithium, 7%-35% of halide salt and the balance of a solvent, wherein the halide salt is at least one of chlorine salt, bromine salt and iodate salt, and the solvent adopts diethoxymethane. The finally prepared methyllithiume solution is more stable due to the fact that the halide salt is added to serve as a stabilizer, and a test shows that the decomposition rate is under 0.01 in 21 days and is remarkably reduced by comparison with a traditional methyllithium solution. The invention further provides the preparation method of the methyllithium solution, the reaction yield of the method is higher, waste in the production process is reduced, and the cost of methyllithium is reduced.

The invention discloses a production method of an algae iodate salt. The production method comprises the following steps: sieving a raw material salt, preparing an iodine source salt, mixing and packaging. Non-iodized salt of different grain sizes are sieved, an algae concentrated solution is added in a defined amount of non-iodized salt to form the iodine source salt, and the iodine source salt is mixed and packaged. According to the production method, the iodine adding amount is accurate, the loss of the concentrated solution is less, relatively uniform grain sizes of salt grains is ensured by virtue of graded screening, so that the uniformity of the iodine-containing amount is ensured, the mixing time is shorted, small grain-size algae iodate salt is easily dissolved by virtue of screening, and is suitable for instant seasoning such as frying and dressing with cold sauce; large-grain size algae iodate salt is suitable for stewing, so that the use practicability and convenience are enhanced.

The invention belongs to the field of electrochemical synthesis, and particularly relates to an eco-friendly production process of iodate, which comprises the following steps: preparing lithium iodateby an electrolytic method, and reacting the prepared lithium iodate with iodide to prepare iodate, thereby recycling the mother solution, avoiding the generation of discharged wastes, having high product yield, avoiding the generation of abundant waste salts, and being green and environment-friendly.In the synthesis process of preparing the lithium iodate by the electrolytic method, a clean electrolytic process is used, an oxidizing agent and other additional raw and auxiliary materials do not need to be added like a chemical method, the raw and auxiliary materials are simple, and the produced iodate product is high in quality.

The invention belongs to the technical field of medicines, and particularly relates to potassium iodide and a preparation method and application thereof. The preparation method of the potassium iodide comprises the following steps: (1) adding iron powder into purified water, heating, adding iodine in batches, and carrying out heat preservation reaction to prepare a head product; and (2) dissolving potassium bicarbonate in purified water, heating, dropwise adding the initial product into the solution, carrying out a heat preservation reaction, filtering, crystallizing and purifying to obtain potassium iodide. The method is simple and convenient in process, simple in post-treatment, good in safety and high in product yield, the content of iodate impurities in potassium iodide can be remarkably reduced, and the requirement of large-scale production of potassium iodide can be met.