Q:What is silica, please? What is there in life that is made of it? Why do I see silicon dioxide in potato chips?

Silica is an oxide of silicon and also an anhydride of silicic acidNatural silica (higher purity) is quartz and crystalThere are many kinds of silica in life, which can be said to be everywhere, such as sand, glass, ceramics, cement, jade and so on

Q:Does the plant absorb the effective silicon in silicon calcium fertilizer or absorb silica?

Silica is not absorbed. Elemental silicon is not directly absorbed by plants

Q:The silica added Nutrilite protein powder has what effect to the human body?

Its hydrophilic properties can be used to remove edema or reduce secretions during wound inflammation and to bind and bind moisture to diarrhoeal patients. The high absorbability can be used to adsorb microorganisms and parvovirus. Fumed silica has been approved by the U. S. Food and Drug Administration for use in many foods.

Q:What is the difference between silicon and silicon dioxide in use? Try to point out in detail

When the molten silicon is solidified, the silicon atoms are arranged into many nuclei in a diamond lattice, and if these nuclei grow into crystalline grains with the same orientation, these grains are united in parallel and crystallized into monocrystalline silicon.Monocrystalline silicon has the physical properties of quasi metal, has a weak conductivity, and its conductivity increases with the increase of temperature, and has significant semi conductivity. Ultra pure monocrystalline silicon is an intrinsic semiconductor. The incorporation of A III trace elements in ultra pure silicon, such as boron can improve the electrical conductivity of the degree, and the formation of P type semiconductors; such as the incorporation of group V A trace elements, such as phosphorus or arsenic can also improve the conductivity, the formation of N type silicon semiconductor.The preparation of monocrystalline silicon is usually made from polycrystalline silicon or amorphous silicon, and then Czochralski silicon or silicon carbide is grown from the melt. Monocrystalline silicon is mainly used to make semiconductor components.

Q:Where is silica produced?

Most of China's quartz is stored in Jiangsu, Lianyungang, Donghai County Province, and Donghai County is also called the hometown of crystal. The county has more than N quartz, quartz lighting products processing enterprises.

Q:Does precipitated white carbon do any harm to the body?

Precipitated silica, also known as light silica, scientific name precipitation, hydrated silica. Is a high-tech inorganic fine chemical products, the main ingredient SiO2. The performance is similar to that of carbon black. The appearance is white, highly dispersed amorphous powder or flocculent powder, and also processed into granules for commodity. The quality is light, the original particle size is below 0.3 mu m, the relative density is 2.319 to 2.653, the melting point is 1750 DEG C, insoluble in water and most of the acids. It has water absorption, and absorbs moisture in the air, it will become the agglomeration of fine particles. Soluble in hydrofluoric acid and caustic soda.

Q:Is silica and white carbon a product?

And white carbon is a special silica. Belong to silica category.Fumed silica is prepared by gas phase method, precipitation method, gel method, etc..Silica includes white carbon black.

Q:Why is silica in high purity water unstable?

In the IR recovery process, the organization's MZ is over 0, but time is different. Use this characteristic to suppress an organization. As fat, because its T1 time is shorter than other tissues, take TI=0.69T1 (T1 for fat relaxation time), fat signal is better than 0 points, can not receive its signal. Highlight other organizations.When the T1 FLAIR sequence is very long, almost all of the MZ has been restored, only T1 very long tissue MZ close to 0, such as water, liquid signal is suppressed, and other special organization. FLAIR (Fluid, Attenuation, IR) is often used to suppress CSF. Application of IR sequences

Q:Tea tea in the additive silica is what role do harm?

By eating into the body of the additive with silica, alkali, acid and acid environment, cavity environment of weak acid environment on the intestine are not decomposed, does not absorb, finally with the feces discharged together. It is worth noting that the higher value of free silica content in the air (respirable silica dust: the standard of respirable dust collection means the dust in the air dynamics diameter below 7.07 m, and the aerodynamic diameter of 5 mu m dust collection efficiency of 50%. in respirable dust free silica content of more than 10% people called respirable silica dust in the air. The workshop 10%~50% containing free silica respirable silica dust the maximum allowable concentration of 1mg/m3. in the air of workplace with more than 50%~80% of free silica respirable silica dust the maximum allowable concentration of 0.5mg/m3. in the air of workplace containing more than 80% free silica respirable silica dust maximum allowable concentration For 0.3mg/m3.) in this type of work environment, chronic exposure (a few weeks with a weak constitution and a few years of strong constitution) can lead to silicosis

Q:What is the main principle of rapid determination of silica by ammonium chloride gravimetric method?

In concentrated hydrochloric acid solution containing silicate in solid ammonium chloride add enough, due to chloride hydrolysis, seized the silicate particles in water, accelerate the dehydration process, the water soluble in water by silica sol into water insoluble hydrogel;