Chemical Formula | NiF2·4H2O |
Molar Mass | 168.70 g/mol |
Appearance | green - blue crystalline solid |
Odor | odorless |
Density | 2.676 g/cm³ |
Melting Point | decomposes |
Solubility In Water | soluble |
Solubility In Other Solvents | insoluble in ethanol, soluble in hydrofluoric acid |
Crystal Structure | monoclinic |
Cas Number | 13940 - 83 - 5 |
Chemical Nature | inorganic compound |
Nickel fluoride, tetrahydrate chemical properties of what is
The tetrahydrate composed of nickel (Nickel) and fluoride (fluoride) is a compound with unique chemical properties. The appearance of this substance often shows a specific form, or is crystalline, and its color also has certain characteristics, often showing a specific color.
In terms of its chemical activity, it shows a specific reaction tendency under many common chemical reaction environments. In the case of some active reagents, a displacement reaction may occur, in which nickel ions may exhibit different valence states due to different reaction environments, or are in common valence states such as positive divalence.
In terms of solubility, it has certain dissolution properties in water, and the dissolution process may be accompanied by physical phenomena such as heat changes. And the dissolved solution, due to the presence of fluoride ions and nickel ions, will affect the conductivity and other properties of the solution, so that the solution has a certain conductivity.
In terms of stability, it can maintain a relatively stable chemical structure at room temperature and pressure without the interference of special chemical factors. However, in case of extreme conditions such as high temperature and strong acid and alkali, its chemical structure may change, decompose or undergo more complex chemical reactions with other substances. The chemical properties of this compound are of great significance in the fields of chemical research and industrial applications, providing a key material basis and research object for research and practice in many related fields.
Nickel fluoride, tetrahydrate what are the uses
Nickel (Nickel) and nickel fluoride (tetrahydrate) have a wide range of uses, which are described as follows:
First, in the field of chemical synthesis, nickel fluoride tetrahydrate is often used as a fluorinating agent. In many organic synthesis reactions, it can promote the introduction of fluorine atoms into specific compounds. This is due to the unique properties of fluorine atoms, which can significantly change the physical and chemical properties of organic compounds, such as improving stability and regulating lipophilicity. In the field of pharmaceutical research and development, many fluorinated drugs are prepared by fluorination reactions involving nickel fluoride tetrahydrate to enhance drug efficacy and metabolic stability.
Second, in the field of materials science, nickel fluoride tetrahydrate has a wide range of uses. First, it can be used to prepare ceramic materials with special properties. By adding an appropriate amount of nickel fluoride tetrahydrate, the electrical, thermal and mechanical properties of ceramics can be improved, such as improving their dielectric constant and enhancing their thermal shock resistance. Second, in the preparation of battery materials, nickel fluoride tetrahydrate also plays a key role. It can be used as an additive to electrode materials to optimize the electrochemical properties of electrodes, such as improving the charge and discharge efficiency of batteries and prolonging the service life of batteries.
Third, in the electroplating industry, nickel is an extremely important plating metal. The nickel plating process can form a dense, bright and corrosion-resistant nickel coating on the surface of various matrix materials. Nickel fluoride tetrahydrate can be used as an additive in some special electroplating formulations to adjust the properties of the plating solution, such as improving the crystallization of the coating, making the coating more uniform and detailed, thereby improving the protection and decorative properties of the coating.
Fourth, in the field of catalysts, nickel-based catalysts are widely used. Nickel fluoride tetrahydrate can be used as an active component or auxiliary for some catalytic reactions after proper treatment. It can change the activity, selectivity and stability of the catalyst, and promote the progress of specific chemical reactions, such as in some hydrogenation, dehydrogenation and isomerization reactions.
Nickel fluoride, tetrahydrate what is the preparation method
The tetrahydrate composed of nickel (Nickel) and fluoride (fluoride) is prepared as follows:
First take an appropriate amount of nickel salt, such as nickel sulfate (Nickel sulfate) or nickel chloride (Nickel chloride), and place it in a clean container. Dissolve it with an appropriate amount of water to form a uniform solution. The water used should be deionized water to avoid the disturbance of impurities.
Then, take an appropriate amount of hydrofluoric acid and slowly drop it into the above nickel salt solution. When adding it dropwise, keep stirring to make the two fully react. During this reaction process, subtle changes can be seen, such as changes in the color or texture of the solution. < Br >
After the reaction is completed, the resulting mixture can be evaporated and concentrated. When evaporating, it should be steamed slowly over low heat and stirred continuously to prevent local overheating. When the solution is thickening and a crystal film appears, remove the heat source and allow the solution to cool and crystallize naturally.
After crystallization is completed, the crystals can be separated by filtration. The resulting crystal is the crude product of nickel (Nickel) and fluoride (fluoride) tetrahydrate.
To obtain a purer product, recrystallization is required. Dissolve the crude product with an appropriate amount of hot water and filter it while it is hot to remove insoluble impurities. The filtrate is naturally cooled and crystallized, then filtered to collect the crystals, and finally dried at low temperature to obtain pure nickel (Nickel) and fluoride (fluoride) tetrahydrate.
When preparing, pay attention to safety. Hydrofluoric acid is highly corrosive. During operation, use protective equipment, such as gloves, goggles, etc., to prevent injury. And the whole process should be carried out in a well-ventilated place to avoid harmful gases.
Nickel fluoride, tetrahydrate what are the physical properties
The physical properties of nickel (Nickel) and nickel fluoride (tetrahydrate) are quite unique, so let me tell you one by one.
Nickel fluoride (tetrahydrate) has a green crystal appearance, which is quite colorful. It has a certain crystalline form and an orderly and regular structure. Under normal temperature and pressure, this substance is relatively stable, and may change under special conditions.
Its melting point is quite critical. Although the exact value is not specified, it can be known that it begins to melt within a certain temperature range. When melting, the crystal structure disintegrates and changes from solid to liquid.
Solubility is also an important property. Nickel fluoride tetrahydrate can be dissolved in some solvents, such as some polar solvents. This property is related to the properties of its molecular structure and chemical bonds. When dissolved in water, nickel ions and fluoride ions are dissociated, which affects the chemical properties of the solution.
Density is a property that measures the relationship between its mass and volume. The density of nickel fluoride tetrahydrate may be similar to that of common inorganic substances, but the specific value needs to be accurately measured. This density determines its settling or floating state in different media.
In addition, although its hardness is not extremely hard, it also has a certain ability to resist external deformation. Optical properties, or absorption or reflection properties of light of specific wavelengths, cause it to appear green. < Br >
Nickel fluoride tetrahydrate has various physical properties and has unique uses and research value in many fields such as chemistry and materials.
Nickel fluoride, tetrahydrate in storage and transportation
Nickel fluoride tetrahydrate must be carefully stored and transported. This substance is toxic and corrosive, and can be harmful to the body if touched or inhaled.
When hiding, it is advisable to choose a cool, dry and ventilated storage to avoid fire and heat. It must be stored separately from acids, alkalis and edible chemicals, and should not be mixed. The storage should be prepared for emergency treatment of leaks and suitable containment materials.
When shipping, be careful when loading and unloading to avoid breaking its package. The car used during transportation should have a grounding chain, and holes can be set in the tank to baffle to reduce shock. Mixing with acids, alkalis and edible chemicals is strictly prohibited. On the way, it must be protected from exposure, rain, and high temperature. After the vehicle is transported, it should be completely cleared.
If it leaks accidentally, the emergency method should also be clear. Isolate the leaked contaminated area and restrict people from entering and leaving. Emergency responders must wear gas suits and dust masks, and do not touch leaks. Small leaks should be swept up and placed in a bag and moved to a safe place. Large leaks should be collected and recycled or transported to a waste treatment site for disposal. In this way, the transportation of the hidden goods should be carried out in accordance with regulations to ensure safety.