There are two kinds of anhydrous and hexahydrate. The anhydrate is a white six-pointed crystal. The density is 4.216g/cm³. The melting point is 643°C. Soluble in water, ethanol, and amyl alcohol. Hexahydrate is a colorless hexagonal crystal or white crystalline powder. Soluble in water, methanol, ethanol. Slightly soluble in acetone. Insoluble in ether. Deliquescence. It loses crystal water and becomes anhydrous when heated to 180℃. poisonous! By the reaction of hydrobromic acid and strontium carbonate in the presence of a reducing agent.It is used as a sedative, sedative and analytical reagent in medicine.Substances containing strontium in oysters include strontium bromide (aqueous alkaline solution) and strontium lactate. Strontium bromide is effective for gastroduodenal ulcers, and has achieved the purpose of strengthening the stomach. Strontium lactate has the effect of treating convulsions (using strontium lactate to guide researchers to speculate that strontium increases the activity of osteoblasts), and it is speculated that strontium has feedback regulation to control human sympathetic nerves And the excitatory effect of parasympathetic nerves, so oysters can also treat neurological disorders. Irritating to eyes, respiratory tract and skin. So be careful when using it. We are mainly engaged in the research and development, production and management of high purity and reagent chemicals. The main products of our company are: Nitrate, chromate, Acetate, Oxalate, Bromide, P-Nitrobenzoic acid, if you have any noods, please contact us.

Strontium chloride, also known as strontium dichloride, is a colorless transparent crystal or granule with a bitter taste. The molecular formula is SrCl2 and the molecular weight is 158.53. Strontium chloride is a raw material for the production of strontium salts and pigments. It is used as a flux for the manufacture of pyrotechnics and electrolysis of metallic sodium, and as a catalyst for organic synthesis. The production method of strontium chloride: In the hydrochloric acid method, the lapis lazuli was crushed to 200 meshes, added to the reactor and stirred with water, and then industrial hydrochloric acid was slowly added, and steam was added to stir to remove impurities such as calcium salts. Then decanted and washed to neutrality. Stir the washed slurry with water, then add soda ash, heat it with steam to generate strontium carbonate, wash it with water to neutrality, wash away sodium sulfate and unreacted soda ash, and add hydrochloric acid for acidolysis reaction. End point control solution pH 4~5. Under heating near boiling, 10% dilute sulfuric acid and 30% hydrogen peroxide are added to remove soluble barium salt and iron. The clarified solution is filtered, concentrated by evaporation to 42-43°, cooled and crystallized, centrifuged, and dried at 220-250°C to obtain anhydrous strontium chloride. Uses of strontium chloride: Strontium chloride is occasionally used as a red colorant for fireworks. A small amount of strontium chloride is also added in glass manufacturing and metallurgy. The radioisotope strontium-89 is used to treat bone cancer, usually in the form of strontium chloride. Marine aquariums need a small amount of strontium chloride to provide some plankton to

Calcium fluoride has a wide range of uses. With the advancement of science and technology, its application prospects are becoming wider and wider. Mainly used in the three major industries of metallurgy, chemical industry and building materials, followed by light industry, optics, sculpture and national defense industries. Therefore, according to the application requirements, my country's fluorite mineral products mainly have four series of varieties, namely fluorite lump ore, fluorite (fluorite) concentrate, fluorite powder, and optical and carved fluorite. Metallurgical Industry Fluorite has the characteristics of lowering the melting point of refractory substances, promoting the flow of slag, separating the slag and metal, desulfurizing and dephosphorizing during the smelting process, and enhancing the forgeability and tensile strength of the metal. Therefore, it is widely used as a fluxing agent in steel smelting and ferroalloy production, iron smelting process and non-ferrous metal smelting. chemical industry Another important use of fluorite is to produce hydrofluoric acid. Hydrofluoric acid is produced by reacting acid-grade fluorite (fluorite concentrate) with sulfuric acid in a furnace or tank. It is divided into anhydrous hydrofluoric acid and hydrofluoric acid. They are both a colorless liquid. , Volatile, strong irritating smell and strong corrosiveness. It is the key raw material for the production of various organic and inorganic fluorides and fluorine elements. Building Materials Industry Fluorite is also widely used in building materia

The chemical co-precipitation method is to mix the equivalent amount of barium and titanium compounds, add precipitation punishment under a certain pH condition, so that the barium and iron compounds co-precipitate, separate the precipitate, dry and calcinate it. Get the product. Compared with the solid phase method, the chemical co-precipitation method has better dispersion of the two components and easier reaction, especially when the two components have similar structures, the solubility and the pH value during precipitation are similar, they can mix well. In addition, the reaction temperature of the co-precipitation method is significantly lower than that of the solid-phase method. When the substance ratio is 1:1, the co-precipitation method will not produce other products such as BoTiO4. The precipitant used in the chemical co-precipitation method can be carbonate, such as (NH4)2CO3:, and NH4HCO3 can also be oxalate or an alkaline solution containing hydrogen peroxide. The following uses oxalic acid as a precipitant as an example. The use of oxalic acid for precipitation is a method that has been studied more since the 1960s. In this method, soluble barium salt, titanium salt and oxalic acid are generally reacted to produce barium titanyl oxalate precipitate, and the precipitate is calcined to obtain barium titanate. At present, there are factories in my country that use this method to produce barium titanate. First, BaCO3 is reacted with HCI to produce a BaCl aqueous solution. The TiCI4 is made into an aqueous solution with purified water, and then the TiCI4 aqueous solution and the barium chloride aqueous solution are mixed in the same amount, and then reacted with an oxalic acid solution that is twice the amount of the

After neutralizing pyrogolic acid (wood acetic acid) with calcium hydroxide, the filtrate is evaporated to dryness and recrystallized;The acetic acid reacts with calcium hydroxide or calcium carbonate, filtered, concentrated and cooled to obtain dihydrate salt (colorless crystals), heated to 84°C to obtain monohydrate salt (colorless crystals), heated to 100°C to obtain anhydrous Salt; Using shells as raw materials, washing, crushing, and drying for 1 hour, roasting at 900-1000°C for 2 hours, and then adding water to make 1.3-1.5 mol/L lime milk. Then it was neutralized with acetic acid to clarify, filtered, the filtrate was concentrated, and finally dried at 120~140℃ to obtain the finished product, the yield was 91.28%. Add calcium carbonate powder to the 20% acetic acid solution until CO2 gas is no longer released, then add a small amount of calcium carbonate, and heat to 80°C for 2~3 hours to heat and concentrate the filtrate in a water bath. At the same time, add a small amount of 80% acetic acid. That is, calcium acetate monohydrate is precipitated (the dihydrate precipitated after the solution is cooled), and finally dried at 60-70°C to obtain the finished product. The chemical equation is as follows: 2CH3COOH+CaCO3→(CH3COO)2Ca+H2O+CO2↑ The method of anhydrous calcium acetate: add refined powdered calcium carbonate to water, stir to form a suspension, and add a small amount of glacial acetic acid in portions. After the reaction, the filtrate was concentrated on a water bath, and a white solid, anhydrous calcium acetate, was precipitated from the viscous filtrate; Add 100 g of calcium carbonate to

Preparation method in the laboratory:Dissolve 50 g of copper sulfate pentahydrate in 500 ml of water, filter, and dissolve another 57 g of sodium carbonate decahydrate in 240 ml of water, heat to 60° C., slowly add the copper sulfate solution with constant stirring. Let stand, filter out the precipitate, wash with hot water until there is no sulfuric acid, put the precipitate in 300ml of water, add 2ml of ammonia water and stir, let stand, pour out the upper layer solution, wash and precipitate several times in this way. Add 180ml of water to the beaker, heat to 60°C, add 22g of glacial acetic acid, and then add the washed basic copper carbonate until there is a little remaining at the bottom of the container. After filtering, the filtrate is evaporated and concentrated to 1/3 of the original volume, cooled, filtered, washed with 2ml of water, and dried at room temperature to obtain the finished product. The mother liquor continues to evaporate, and 5ml of 25% acetic acid is added when the crystallization is about to come out, and part of the finished product can be obtained. It was 32-35g. [2] The overall response is: 2 CuSO4·5H2O + 4 NH3 + 4 HOAc → Cu2(OAc)4(H2O) 2 + 2 (NH4)2SO4 + 8 H2O Chemical nature Monohydrate will lose water under vacuum at 100°C: Cu2(OAc)4(H2O)2 → Cu2(OAc)4 + 2 H2O Reducing copper acetate with copper, hydrazine hydrate, etc. in a non-aqueous solvent will result in colorless and volatile cuprous acetate: 2 Cu + Cu2(OAc)4 → 2 Cu2(OAc)2

Barium acetate and code acid are common chemical raw materials. They are often used as additives or preservatives in the national economy and people's livelihood industries, such as the food industry. In a word, industrial production cannot do without these raw materials, so how to measure the flow of these raw materials? Electromagnetic flowmeter is a kind of high-precision flowmeter for measuring conductive fluid originated from modern times. The technology has become more and more mature in a century of development. End users have been rushing to it. As long as fluid measurement appears, the first question to ask is whether electromagnetic flowmeters can be used? sure! The flowmeter with the most suitable working condition is the best flowmeter. Remember one thing when selecting the three elements of working condition: 1. Medium, the medium determines the electrode material, so it can be determined that barium acetate and code acid are acidic. You can choose 316L stainless steel, which is an acid-resistant electrode. 2. Temperature, so you can determine whether the lining material of the electromagnetic flowmeter can be 4F or rubber or ceramic. 3. Pressure can facilitate us to determine which flange to choose for the electromagnetic flowmeter installation method, stainless steel or carbon steel The above is about the method of measuring barium acetate, We are mainly engaged in the research and development, production and management of high purity and reagent chemicals. The

Calcium acetate is an over-the-counter medicine whose main function is to prevent and treat calcium deficiency. Such as osteoporosis, tetany, skeletal hypoplasia, rickets, and calcium supplementation in children, pregnant and lactating women, menopausal women, and the elderly. Adverse reactions are less, and occasionally constipation can be seen. It cannot be used for some hypercalcemia and hypocalcemia, and those who are allergic to this drug cannot use it. This drug can not be used with digitalis drugs at the same time, digitalis poisoning may occur. Heavy drinking, including coffee, and heavy smoking can inhibit calcium absorption. Eating a lot of cellulose foods can also inhibit the absorption of calcium, because calcium and cellulose combine to form compounds that are not easily absorbed. In addition, vitamin D and estrogen can promote calcium absorption. The above is the introduction of ca

Celestite ore is mainly used to produce strontium carbonate, followed by strontium nitrate, strontium chromate, strontium titanate, strontium phosphate, strontium sulfate, strontium chloride, and can also extract metal strontium. Strontium and strontium salts are widely used in industries such as electronics, metallurgy, non-ferrous metals, electrical, national defense, glass, medicine, and sugar. Strontium carbonate can be used as a coating for the fluorescent screen of a color TV picture tube, which can not only greatly reduce X-ray radiation, but also improve the clarity of the picture and the authenticity of the color tone. Used in the electrical industry to manufacture strontium ferrite ceramic materials and atomic batteries. In the metallurgical industry, strontium and strontium salts can be used as desulfurization and dephosphorization agents in steelmaking, and can improve pig iron performance and steel quality in ferrosilicon production. In the national defense industry, it is used to make signal flare, tracer and fireworks. In addition, it can also be used as a reducing agent for refractory metals, a degassing agent for vacuum tubes, a catalyst for synthetic diamonds, a lubricant, and special alloy materials. In recent years. The oxides of strontium, lanthanum and copper can be used as important metals to compose superconducting ceramics, and the saturated solution is used to test barium. Fireworks manufacturing. Used as an additive for glass and ceramics, and also as a degassing agent for

In the hydrochloric acid method, the lapis lazuli was crushed to 200 meshes, then added to the reactor and stirred with water, and then industrial hydrochloric acid was slowly added, and steam was introduced to stir to remove impurities such as calcium salts. Then decanted and washed to neutral. The washed slurry is stirred with water, then added soda ash, heated by steam to generate strontium carbonate, washed with water to neutral, washed away sodium sulfate and unreacted soda ash, and then added hydrochloric acid for acidolysis reaction. End point control solution pH4Chemicalbook~5. Under heating near boiling, 10% dilute sulfuric acid and 30% hydrogen peroxide are added to remove soluble barium salt and iron. The clarified solution is filtered, concentrated by evaporation to 42-43°Be, then cooled and crystallized, centrifuged, and dried at 220-250°C to obtain anhydrous strontium chloride. Its SrSO4+Na2CO3→SrCO3+Na2SO4SrCO3+2HCl→SrC12+H2O+CO2↑The above is about the production method of strontium

Zinc dihydrogen phosphate is a white triclinic crystal or a white coagulum with a low melting point. It begins to decompose at 100C, dissolves in water and decomposes, and dissolves in hydrochloric acid and alkali. It is corrosive and deliquescent. Stable in the air at room temperature. Used in the electroplating industry as the anti-corrosion treatment of ferrous metal parts. Its performance is better than manganese dihydrogen phosphate. It is also used as an anti-rust and phosphate treatment agent on metal surfaces. It is used as a coloring agent in the ceramic industry and a clarifier in the glass industry. . This product is used as an anti-corrosion coating for ferrous metals in the electroplating industry, and as a phosphating agent in the phosphating of steel products. It is a new type of non-toxic anti-rust pigment. Used as a base material for various coatings such as alkyd, phenolic, epoxy resin, etc., and also used to produce non-toxic anti-rust pigments and water-soluble coatings. It is also used as a flame retardant for chlorinated rubber and synthetic polymer materials, and also as a dental impression material. The above is about the application of zinc dihydrogen phosphate, We are mainly engaged in the research and development, production and management of high purity and reagent chemicals. The main products of our company are: Nitrate, chromate, Acetate, Oxalate, Bromide, P- Nitrobenzoic acid, if you have any noods, please contact us.

Strontium chloride is an important inorganic chemical product, mainly used in the production of magnesium-strontium alloy, high-purity strontium salt, high-grade magnetic materials, and is also widely used in TFT-LCD liquid crystal, PDP plasma color TV and medicine, and has a high This article takes the key step in the preparation process of strontium chloride-the cooling crystallization process of SrCl2 6H2O as the object, carries out the crystallization metastable zone and nucleation process, crystallization process optimization, numerical simulation and control of the crystallization process, and crystal morphology control Theoretical and technological research provides theoretical guidance for industrial production. The research results show that the increase in saturation temperature significantly shortens the induction period of SrCl2 6H2O crystallization and narrows the metastable zone. The increase in temperature reduction rate shortens the induction period and widens the metastable zone. Increasing the stirring rate helps to nucleate, shorten the induction period and narrow the metastable zone. The presence of impurity Ca2+ shortens the induction period and narrows the metastable zone. Small-sized seed crystals have a larger surface area and can effectively adsorb the nucleation group In order to prepare SrCl2·6H2O crystals with large size and concentrated distribution, the initial supersaturation should be controlled to 1.150~1.250, and the cooling rate should be 15.0~ 20℃·h-1, stirring speed 400~500 rpm, crystal growth time 5-10 min, SrCl2·6H2O crystals obtained in this process range are rod-shaped, average length Lmean is 1206.78μm, average width Wmean is 80.06 μm . The coefficient of variation CVL and CVW are 0.23

We are mainly engaged in the research and development, production and management of high purity and reagent chemicals. The main products of our company are: Nitrate, chromate, Acetate, Oxalate, Bromide, P-Nitrobenzoic acid, if you have any noods, please contact us.Next, I will introduce barium chromate. Product Name: Barium Chromate Molecular formula: BaCrO4 Specification: AR/25kg CAS number: 10294-40-3 Reference price: teleconference Properties: yellow crystalline powder, insoluble in water, dilute nitric acid and chromic acid, soluble in hydrochloric acid, nitric acid, density: 4.498. Package: 25kg woven bag (can be packaged according to customer's special requirements) Note: Keep away from light. Toxic and oxidizing.way for barium chromate: analytical reagents, safety matches, ceramics, glass pigments, propellant powder. Density: 4.498 Properties: yellow orthorhombic crystals. Dissolution: insoluble in water, soluble in hydrochloric acid and nitric acid.

Dipotassium hydrogen phosphate is a very common potassium fertilizer, which can promote the growth of a variety of crops, one of which is topdressing cherries. So how is dipotassium hydrogen phosphate used in pepper planting? Let me introduce to you. Manufacturer experts say that dipotassium hydrogen phosphate plays an important role in promoting the growth of cherries: As we all know, cherry trees grow rapidly and their developmental stages are clearly concentrated. The growth, flowering and fruit setting of branches and leaves are concentrated in the first half of the growing season, and the differentiation of flower buds is mostly completed within a short period of time after the fruit is picked. It only takes 40-60 days for the cherry to bloom and mature, so the amount of stored nutrients will greatly affect the size and quality of the fruit in the coming year. In order to promote the growth of seedlings, in addition to applying basal fertilizer in autumn, water and topdressing should be timely based on soil drought and seedling growth. The top dressing time is before flowering or during the first rapid growth period of the fruit. The fast-acting nitrogen fertilizer is the main method, which can increase the fruit setting rate, promote the growth of branches and leaf hypertrophy, and lay a good foundation for the differentiation of flower buds. Foliar spraying of 500 times diluted boron fertilizer and 600 times diluted potassium dihydrogen phosphate in the early stage of flowering can significantly increase the fruit setting rate and achieve the purpose of increasing yield.

We are mainly engaged in the research and development, production and management of high purity and reagent chemicals. The main products of our company are: Nitrate, chromate, Acetate, Oxalate, Bromide, P-Nitrobenzoic acid, if you have any noods, please contact us. Next, let me introduce the role of potassium hydroxide. 1. Used as a desiccant and absorbent, used in the production of oxalic acid and various potassium salts, and also used in electroplating, carving, lithography, etc. 2. Mainly used as raw materials for potassium salt production, such as potassium permanganate, potassium carbonate, etc. In the pharmaceutical industry, it is used to produce potassium borohydride, spironolactone, salanol, testosterone propionate, etc. In the light industry, it is used to produce potassium soap, alkaline storage batteries, and cosmetics (such as cold cream, vanishing cream and shampoo). In the dye industry, it is used to produce vat dyes, such as vat blue RSN. In the electrochemical industry, it is used for electroplating, engraving, etc. In the textile industry, it is used in printing and dyeing, bleaching and mercerizing, and is used in large quantities as the main raw material for man-made fibers and polyester fibers. In addition, it is also used in metallurgical heating agents and leather degreasing. 3. Basic chemical raw materials, used in medicine, daily-use chemicals, etc. 4. Used as analytical reagent, saponification reagent, carbon dioxide and moisture absorbent.

Ammonium bifluoride is a gas, colorless and irritating, and a weak monobasic acid. Its aqueous solution is also toxic. It can be absorbed through the respiratory tract, skin, and mucous membranes, and can cause bone and tooth deformities. Its chemical formula is HF. It is a binary compound composed of fluorine and hydrogen. Use ammonium bifluoride to detect the concentration of HF gas in the air. With the development of the economy, the domestic demand for fluorine chemical products is also increasing, and the expansion of domestic and foreign markets has further accelerated the development of my country's fluorine chemical industry. The hazardous chemicals involved in fluorine chemical products are diverse, volatile, highly toxic, and highly corrosive, as well as fire and explosion hazards. In the production process of many fluorides, the residual fluorine gas is hydrolyzed or as a by-product of the production reaction will inevitably contain a small amount of ammonium bifluoride. For some high-purity fluorides, the content of ammonium bifluoride will directly affect the quality of the product. We are a chemical enterprise specializing in the production and sales of fluorine chemicals, fluorine fine chemicals, and fluorine organics. From the mining of fluorite powder to the deep processing of fluoride, the company strictly controls the quality of products, and improves the quality management system and environmental management. The system has always insisted on providing customers with high-quality and low-cost products and after-sales service. In today's information technology, in line with the business philosophy of honest ma

Electromagnetic flowmeters are widely used in the flow measurement of conductive liquids. In the process of lead nitrate, strontium chloride, and flow measurement, electromagnetic flowmeters still play a major role and can accurately measure such media. For the flow measurement of lead nitrate and strontium chloride, engineers have done an experiment, and through the test results, it is confirmed that the electromagnetic flowmeter can measure such a medium. The following are the experimental data of lead nitrate and strontium chloride: Lead nitrate: At a concentration of 5.0%, the temperature is 15°C, and the conductivity is 19.10×10ˉ3S/cm; Strontium chloride: with a concentration of 22%, a temperature of 18°C, and a conductivity of 15.83×10ˉ2S/cm; According to the measurement principle of the electromagnetic flowmeter, as long as the conductivity is greater than 5us/cm of the liquid medium, it can be measured by the electromagnetic flowmeter, so the electromagnetic flowmeter It is possible to measure the flow of lead nitrate and strontium chloride. The above is about the development of lead nitrate, We are mainly engaged in the research and development, production and management of high purity and reagent chemicals. The main products of our company are: Nitrate, ch

The theoretical specific capacity of metal lithium reaches 3860mAh/g, the potential is only -3.04V (vs standard hydrogen electrode), and it has excellent electronic conductivity. It is an ideal lithium ion battery negative electrode material. However, the presence of local polarization in the repeated charge and discharge process of lithium metal anodes causes dendrite growth and electrode powdering problems, which limits the large-scale application of lithium metal anodes. LiNO3 is effective in improving the stability of the metal lithium interface. Additives, but the mechanism of its action in the electrolyte is still unclear. The composition of the SEI film can be changed by adjusting the electrolyte composition, which has a significant impact on the deposition behavior of lithium metal. Therefore, the author here studied the influence of the electrolyte composition on the structure of the SEI film by adjusting the ratio of LiNO3 and LiTFSI. It is found that in the presence of LiNO3, the composition of the SEI film is more complex, thicker, and denser. At the same time, the decomposition product of LiNO3, LixNyOz, significantly improves the ion conduction efficiency of the SEI film and the stability of the SEI film. The deposition morphology of metallic lithium is smoother and more uniform. In order to analyze the exchange reaction rate of Li in different SEI membranes under actual working conditions, the author conducted a test in the presence of electrolyte. Since the electrolyte can penetrate into the pores of the SEI membrane, the exchange reaction becomes more complicated. There is a three-phase reaction of electroly