In recording man-max relation,the best material used without producing pressure is:
a- Wax.
b- Compound.
c- Bite registration paste (zinc oxide & eugenol paste).***
-----------------------------
Zinc oxide is an inorganic compound, which is formed when zinc is mixed with oxygen and whose formula is ZnO, is considered a semiconductor.
This semiconductor, is found in the natural state in the mineral known as zincite, although the synthetic production thereof, is the most commonly marketed, to be used, in its state of white powder and insoluble in water, as an additive element, in the composition of different materials and finished products.
In this sense, I could be found as a component of a series of industrial materials, such as:
- Rubber
- Plastics
- Ceramics
- cement
- Lubricants
- glass
- Paintings
- Creams
- Adhesives
- Batteries
- Fire extinguisher powder
Chemical properties of zinc oxide:
- Zinc oxide is represented by the formula ZnO
- It is an amphoteric oxide, because it is soluble in acids and alcohol
- Reacts slowly with fatty acids and oils
- Presents optimal transparency
- It has good electron mobility
- Provides strong luminescence at room temperature
- Offers a wide range of energy where there are no electronic states
- It is thermochromic, that is to say it changes color - according to the temperatures
- It has a high refractive index
- It is a strong thermal conductor
Physical properties of zinc oxide:
-In the natural state it is found as the mineral zincite, whose other components, make it look yellowish-reddish-colored.
- In a synthetic state it is a white powder
- It is odorless
- Its melting point 1970 degrees Celsius
- Density (20/4): 5.61
- Atomic weight: 81.39 uma
- Specific heat 390J / kg K
- Its surfaces are atomically flat, stable and have no reconstruction.
- It crystallizes in two forms mainly, hexagonal wurtzite14 and cubic zinc blende
Zinc oxide uses and applications:
- Zinc oxide has numerous applications in various fields, this is due to its versatility, as a precursor reagent for other compounds.
- Medicine Dermatologists usually prescribe a mixture whose generic name is calamine, which contains, in a low percentage, a part of zinc oxide, to relieve itching and various skin discomforts, related to allergies, insect bites and irritations in the skin. Baby skin, known as diaper rash.
- Odontology. In dental offices, zinc oxide is always present, as it constitutes an excellent basis for amalgams, is regenerative and is used in prosthodontics, in order to return the anatomical and aesthetic function of missing teeth.
- Cosmetics ZnO, is used in personal hygiene products, for its deodorizing and antibacterial properties, therefore it can be found, duly diluted in deodorants, toothpastes, skin protection creams and sunscreens.
- Foods. Zinc oxide is widely appreciated in the food industry, as a source of zinc added to certain foods, such as cereals, dairy drinks and even, as a preservative, for its high antibacterial power.
- Rubber Most of the zinc produced for industrial purposes is intended for rubber processors, because together with stearic acid it is used for vulcanization of rubber and protection of the final product against fungi.
- Ceramics Zinc is an active component in the production of materials made of ceramics, especially those products that carry enamel and are finished in the oven. This is due to its resistance to heat and high thermal conductivity, characteristics that enhance the elasticity of the enamel, thus avoiding the fracture of the piece.
- Coatings. It is a vitally important component of products designed to prevent corrosion, such as bases and paints for metals and iron, since it has been proven with experience that products whose composition contains zinc oxide are more durable and adhere more strongly to the surfaces. Its corrosion prevention power is so strong, that it is used, after conversion treatments, on the surfaces of nuclear pressurized water reactors.
- Plastics It has become customary in plastic producing companies, (especially pieces of polyethylene and polycarbonate), to apply a layer of zinc oxide, as a protective coating, against the sun's rays, which can turn these materials yellowish. Also, it is used because it lengthens the oxidation time.
- Tobacco Cigarette filters are basically a carbon cylinder impregnated with zinc oxide and iron oxide, which act as removers of certain components of cigarette smoke, without eliminating the characteristic tobacco taste,
a- Wax.
b- Compound.
c- Bite registration paste (zinc oxide & eugenol paste).***
-----------------------------
Zinc oxide is an inorganic compound, which is formed when zinc is mixed with oxygen and whose formula is ZnO, is considered a semiconductor.
This semiconductor, is found in the natural state in the mineral known as zincite, although the synthetic production thereof, is the most commonly marketed, to be used, in its state of white powder and insoluble in water, as an additive element, in the composition of different materials and finished products.
In this sense, I could be found as a component of a series of industrial materials, such as:
- Rubber
- Plastics
- Ceramics
- cement
- Lubricants
- glass
- Paintings
- Creams
- Adhesives
- Batteries
- Fire extinguisher powder
Chemical properties of zinc oxide:
- Zinc oxide is represented by the formula ZnO
- It is an amphoteric oxide, because it is soluble in acids and alcohol
- Reacts slowly with fatty acids and oils
- Presents optimal transparency
- It has good electron mobility
- Provides strong luminescence at room temperature
- Offers a wide range of energy where there are no electronic states
- It is thermochromic, that is to say it changes color - according to the temperatures
- It has a high refractive index
- It is a strong thermal conductor
Physical properties of zinc oxide:
-In the natural state it is found as the mineral zincite, whose other components, make it look yellowish-reddish-colored.
- In a synthetic state it is a white powder
- It is odorless
- Its melting point 1970 degrees Celsius
- Density (20/4): 5.61
- Atomic weight: 81.39 uma
- Specific heat 390J / kg K
- Its surfaces are atomically flat, stable and have no reconstruction.
- It crystallizes in two forms mainly, hexagonal wurtzite14 and cubic zinc blende
Zinc oxide uses and applications:
- Zinc oxide has numerous applications in various fields, this is due to its versatility, as a precursor reagent for other compounds.
- Medicine Dermatologists usually prescribe a mixture whose generic name is calamine, which contains, in a low percentage, a part of zinc oxide, to relieve itching and various skin discomforts, related to allergies, insect bites and irritations in the skin. Baby skin, known as diaper rash.
- Odontology. In dental offices, zinc oxide is always present, as it constitutes an excellent basis for amalgams, is regenerative and is used in prosthodontics, in order to return the anatomical and aesthetic function of missing teeth.
- Cosmetics ZnO, is used in personal hygiene products, for its deodorizing and antibacterial properties, therefore it can be found, duly diluted in deodorants, toothpastes, skin protection creams and sunscreens.
- Foods. Zinc oxide is widely appreciated in the food industry, as a source of zinc added to certain foods, such as cereals, dairy drinks and even, as a preservative, for its high antibacterial power.
- Rubber Most of the zinc produced for industrial purposes is intended for rubber processors, because together with stearic acid it is used for vulcanization of rubber and protection of the final product against fungi.
- Ceramics Zinc is an active component in the production of materials made of ceramics, especially those products that carry enamel and are finished in the oven. This is due to its resistance to heat and high thermal conductivity, characteristics that enhance the elasticity of the enamel, thus avoiding the fracture of the piece.
- Coatings. It is a vitally important component of products designed to prevent corrosion, such as bases and paints for metals and iron, since it has been proven with experience that products whose composition contains zinc oxide are more durable and adhere more strongly to the surfaces. Its corrosion prevention power is so strong, that it is used, after conversion treatments, on the surfaces of nuclear pressurized water reactors.
- Plastics It has become customary in plastic producing companies, (especially pieces of polyethylene and polycarbonate), to apply a layer of zinc oxide, as a protective coating, against the sun's rays, which can turn these materials yellowish. Also, it is used because it lengthens the oxidation time.
- Tobacco Cigarette filters are basically a carbon cylinder impregnated with zinc oxide and iron oxide, which act as removers of certain components of cigarette smoke, without eliminating the characteristic tobacco taste,
Health risks of zinc oxide:
The health risks involved in the consumption or contact with excessive amounts of zinc are many and very dangerous.
In the first place, we find the dangers that the inhalation of zinc dust could represent, by the workers of the industries that, due to the nature of their manufacturing activity, use this component, as an ingredient of their products.
If one of these workers inhales the zinc vapors, it can affect their health, producing “metal and vapor fever” and warrants a visit to the doctor to indicate the steps to follow, to lower the fever and other symptoms, which They can range from dizziness and vomiting, to cramps and headache.
In the home, accidental intake of zinc should be prevented, as this element is present, as we have already seen, in a series of cosmetic products and medicines, which could be ingested without supervision, especially by children.
If you believe that any of your children has been poisoned with zinc, you should observe if you have the following symptoms and call your doctor immediately:
- Fever, chills
- Cough
- Diarrhea
- Irritation in mouth and throat
- Nausea and vomiting
- Stomach ache
- Yellow skin and eyes
We must take into account that this article is not intended to be a medical manifesto, but a guide for you to know, the risks that zinc oxide represents in its pure state.
The recommendation is that you do not wait for an accidental intake of zinc by a member of your family, because it is in prevention that good health in the home should be supported.
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