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    Is Lead Carbonate Soluble in Water?

    Lead carbonate, PbCO3, is a mineral composed of orthorhombic crystals. It decomposes at about 315degC, producing toxic fumes and reacting violently with fluorine to produce a fire hazard.

    Lead is a toxic metal and can cause severe health problems, including comas or death in children. It is also thought to cause hearing loss and IQ problems in children.

    Water soluble leads include lead(II) acetate, lead(II) carbonate, and lead metaborate (Pb(CO3)22-). These are important industrial chemicals used in the production of colored glazes, white house paints, and tin-lead plating applications.

    Various sets of batch dissolution experiments have been conducted to investigate the impact of pH values ranging from 7.0 - 9.5, temperatures (5@C vs. 20@C) and alkalinity levels (moderate vs. low) on the solubility of lead species in drinking water.

    The results of these experiments have shown that pH ranging from 7.0 to 9.5 has no significant influence on the dissolution of lead species. In addition, cold temperature and moderate alkalinity showed a great influence on decreasing the solubility of lead species.

    Inhalation of lead carbonate can lead to a variety of health problems such as respiratory tract irritation, sore throat, and lead lines in the gums. Exposure to lead can also be a serious health risk for pregnant women. It can have long-term effects such as lowered IQ, behavioral disorders, and seizures.

    2023-04-19

    Blog

    Researches and application prospects of nano silicon powder

    What is Nano silicon? Nano silicon The smallest diameter of crystal silicon particles is 5 nanometers. Nano silicon powder is high in purity and has small particles. It also has uniform distribution. This product is tasteless and non-toxic thanks to its high surface area, high activity and low bulk density. Nano silicon powder, a new generation optoelectronic materials with high gap energy semiconductors, is also a high power light source material.
    Nano silicon research is undergoing new developments
    (1) Change the amount of silicon-rich and annealing temperatures to control the size of silicon nanocrystals. The critical temperature required for the formation of silicon nanocrystals has been suggested by the literature as being 1000oC. We have proved this through experiments. After annealing at 900oC, the high-resolution electron photo of silicon-rich silicone oxide has a silicon content of around 30%. It is obvious that silicon nanocrystals exist.
    (2) First time observation of the electroluminescence in Au/(Ge/SiO2) superlattice/p -Si structure. High-resolution electron micrograph showing a four-period Ge/SiO2 supra lattice. The bright-line shows SiO2 having a thickness of 2.0nm. The Ge layer has a thickness at 2.4nm.
    (3) The nanoSiO2/Si/SiO2 single-potential high-potential sandwich structure was created on a silicon substrate. It was achieved by magnetron-sputtering technology. This enabled visible electroluminescence to be realized for the first-time. It was found that the intensity and peak positions of electroluminescence oscillate synchroeously with changes in the thickness (W), of Nano-silicon. Further research and analysis have proven that the oscillation time is 1/2 of the de Broglie wavelength. This is explained by our electroluminescence theory.

    (4) Er electroluminescence (with a wavelength 1.54mm) was first realized using the SiO2Si:Er film grown by magnetron-sputtering.
    (5) First time, a UV-violet luminescence of 360nm at a low threshold voltage was achieved in heat-treated natural silicon oxide/pSi. It is the longest wavelength known to be produced by silicon-based ultravioletescence.
    The applications prospects for Nano silicon
    We have developed more than 10 types of silicon/siliconoxide nanostructures and realized the photoluminescence within the main wavelength bands (including 1.54 mm and 1.62 mm from the near ultraviolet to the near infrared). Also, we proposed widely supported photoluminescence & electroluminescence models that provide the foundation for silicon-based optoelectronic Integration. It is of significant scientific significance and offers great potential for future applications.
    (aka. Technology Co. Ltd. (aka. Our Nano silicon is high in purity, fine particle size, and impurity. Please Please contact us if necessary.

    2023-04-17

    Products Category


    Innovative materials

    Cement foaming agent, also known as foaming concrete foaming agent, refers to an admixture that can reduce the surface tension of liquid and generate a large amount of uniform and stable foam for the production of foamed concrete. Foaming agent is a kind of substance that can make its aqueous...

    Molecular sieves

    Molecular sieve is a synthetic hydrated aluminosilicate (zeolite) or natural zeolite with the function of screening molecules.Zeolite molecular sieve has a complex and changeable structure and a unique pore system, and is a catalyst with excellent performance. Uses of Molecular Sieves Molecular sieve is mainly caused by molecular attraction, which...

    Surfactant

    Any substance that dissolves in water and can significantly reduce the surface energy of water is called a surface active agent (surface active agent, SAA) or surface active substance. Surfactants reduce the surface tension of water by adsorbing at the gas-liquid two-phase interface, and can also reduce the oil-water interfacial...

    Lithium Battery Anode

    Lithium battery anode material are generally divided into carbon-based negative electrodes and non-carbon-based negative electrodes. Among them, carbon-based negative electrodes can be divided into graphite, hard carbon, and soft carbon negative electrodes. Graphite can be divided into artificial graphite, natural graphite, and mesocarbon microspheres; non-carbon The negative electrode includes lithium...

    MAX Phase

    The MAX phase is a new type of ternary layered compound, which is composed of three elements, M, A and X, and its general chemical formula is MN+1AXN, (wherein, M: pre-transition metal, A: Group A element, X: Carbon or nitrogen, N=1, 2, 3…), both metal materials (excellent electrical and thermal...

    Metal Alloy

    Alloy is a mixture with metallic properties synthesized by two or more metals and metals or non-metals by certain methods. Generally obtained by fusion into a homogeneous liquid and solidification. According to the number of constituent elements, it can be divided into binary alloys, ternary alloys and multi-element alloys. Two...

    Nanoparticles

    Nanometer-scale structural materials are referred to as nanometer materials for short, which refer to the size of their structural units ranging from 1 nanometer to 100 nanometers. Since its size is close to the coherence length of electrons, its properties are greatly changed due to the self-organization brought about by...

    Stearic Acid Series

    Stearic acid, namely octadecanoic acid, molecular formula C18H36O2, is produced by the hydrolysis of oil and is mainly used to produce stearate. Dissolve each gram in 21ml of ethanol, 5ml of benzene, 2ml of chloroform or 6ml of carbon tetrachloride. Applications of Stearic acid Mainly used in the production of...

    Selenide Powder

    There is a typical antagonism between selenium and metals, and selenium with different valences can combine with metal ions to form metal selenides. Metal selenides have attracted much attention in recent years due to their excellent optoelectronic and catalytic properties, and have potential applications in solar cells, pollutant degradation, and...

    Telluride Powder

    Tellurium is a typical scattered element. Tellurium and its compounds are widely used in metallurgy, chemical industry, electronics, energy, medicine and health and other industries.Telluride is a compound of tellurium with a metal or a non-metal. Such as the representative of the telluride with a non-metal is hydrogen telluride, which...

    Silicide Powder

    Binary compounds formed by certain metals (such as lithium, calcium, magnesium, iron, chromium, etc.) and some non-metals (such as boron, etc.) and silicon. Generally crystalline, with metallic luster, hard and high melting point. Uses of Silicide Powder Metal silicide as an electric heating element is one of its earliest applications....

    Nitride Powder

    Nitride is similar to metal in appearance, hardness and conductivity, and generally has high hardness, high melting point, stable chemical properties, and electrical conductivity. Such as titanium nitride, vanadium nitride, zirconium nitride, tantalum nitride, etc. is hard and refractory, and has the characteristics of chemical corrosion resistance and high temperature...

    Carbide powder

    Carbide powder is a binary compound formed by carbon (other than hydrogen) which is smaller or similar to electronegativity. Carbides have a higher melting point. Most carbides are carbon and metal at high temperatures. The next reaction is obtained. The properties of the element are divided into metal carbides and...

    Oxide Powder

    Oxide powder is the chemical compound solid powder contains one oxygen and another element, such as metal oxides, metal oxides are a chemical compound formed between metals, specifically cations such as Na, K, Li, etc., and oxygen. These compounds require at least of two elements, as compounds do, and always...

    Sulfide Powder

    Sulfide powder refers to the chemical compounds powder with large families of inorganic and organic compounds, e.g. copper sulfide, Zinc sulfide, molybdenum disulfide, tungsten disulfide powders and so on. Sulfides and their similar compounds include a series of metals and semi-metallic elements combined with S, Se, Te, As, Sb, Bi...

    3D Printing Powder

    3D Printing powder are metal powders that are reduced to fine particles. 3D printing metal powder are the the preliminary base materials for most 3D printing processes that produce metallic parts. 3D printing, also known as additive manufacturing (AM), is the manufacturing of parts and products in a layer-by-layer fashion....

    Boride Powder

    Metallic boride powders are very unique but functional new ceramic materials.The boride powders have many advantages such as high melting point, high hardness, good electrical conductivity and thermal conductivity. Therefore, boride powder can be used as heat-resistant and hard materials that can be accurately processed by electric discharge machining. Such...

    Elementary

    Elementary substance is a pure chemical substance that consists of atoms belonging to a single chemical element, it is widely used in many industrial fields. Are you looking for high purity & quality elementary substance such as hafnium diboride powder, zirconium diboride powder, aluminum diboride powder, magnesium diboride powder? Biomedicalmaterialsprogram...

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