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Anonymous users2024-02-08Highly poisonous, seen in chemistry.
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Anonymous users2024-02-07Sodium hydride, very toxic!!
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Anonymous users2024-02-06If you don't say it, I haven't heard of it yet. But it should be harmful to the human body.
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Anonymous users2024-02-05Sodium hydroxide is commonly known as caustic soda, caustic soda, caustic soda.
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Anonymous users2024-02-041. NAH means sodium hydride.
2. NAH is the chemical equation of sodium hydride, sodium hydride is an inorganic salt, and sodium hydride is mainly used in strong alkalis in the synthesis and application channel.
3. And sodium hydride will not dissolve with the silver song agent, but will only dissolve with sodium metal, so all reactions of sodium hydride are only on the solid surface.
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Anonymous users2024-02-031. Definitions. Sodium hydride, with the chemical formula NAH, is an inorganic salt. In organic synthesis, sodium hydride is mainly used as a strong base.
Sodium hydride is a typical representative of salt hydrides, i.e. they are composed of Na+ and H, unlike molecular hydrides such as borane, methane, ammonia, and water. Sodium hydride is insoluble in organic solvents and soluble in molten metal sodium, so almost all sodium hydride-related reactions occur on solid surfaces.
Physical properties: gray powder, MP 800°C, D g cm3. Sodium hydride is insoluble in all organic solvents and insoluble in liquid ammonia; However, it is soluble in molten sodium and decomposes violently in water.
Second, the role. 1. Sodium hydride is a strong base with a wide range of uses in organic synthesis (PKA 36). It can rob protons from many compounds (even weak Br nsted acids) to produce corresponding sodium compounds.
2. Sodium hydride is most commonly used for the deprotonation of 1,3-dicarbonyl compounds, maleate and similar compounds, and the corresponding sodium compounds can be alkylated, so as to generate a variety of organic compounds.
3. Sodium hydride is also used in the synthesis of thiochloride, so as to realize the conversion from ketones to epoxy compounds.
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Anonymous users2024-02-02Sodium hydroxide is alkaline.
Alkalinity refers to the ability of a substance to provide unshared electron pairs to other substances in a solvent, and at room temperature, its pH is 7, and the solution is alkaline. For a substance, whether it is basic or not depends on the ability of unpaired electrons to accept protons, such as in aqueous solution, OH- ions are able to accept H+, NH4+ and other ions, thus exhibiting alkalinity.
Sodium hydroxide
Sodium hydroxide, an inorganic compound, chemical formula NaOH, also known as caustic soda, caustic soda, solid soda, caustic soda, caustic soda. Sodium hydroxide canopy has strong alkalinity, strong corrosiveness, and silver can be used as acid neutralizing agent, with masking agent, precipitant, precipitation masking agent, chromogenic agent, saponifying agent, peeling agent, detergent, etc., very widely used.
There are two methods for industrial production of sodium hydroxide: causticizing and electrolysis. The causticizing method is divided into soda ash causticizing method and trona causticizing method according to different raw materialsThe electrolysis method can be divided into the separator electrolysis method and the ion exchange membrane method. The staff should take precautions, and if the infiltration is accidentally touched ** and eyes, it should be rinsed with plenty of water immediately.
The working environment should have good ventilation conditions.
The above content reference:Encyclopedia – Sodium hydroxide
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Anonymous users2024-02-01Sodium hydroxide is also known as caustic soda, or caustic soda, caustic soda, chemical formula NaOH. Appearance.
It is a colorless transparent crystal, soluble in water, ethanol, glycerol, insoluble in organic solvents such as acetone. The aqueous solution has a slippery feeling and produces high heat when dissolved in water.
Sodium hydroxide has strong alkalinity and strong hygroscopicity, strong corrosiveness, corrosive effect on fibers, glass, ceramics, etc., wear protective goggles and rubber gloves when operating, and be careful not to splash on the ** or eyes.
Sodium hydroxide is the most basic chemical raw material and has a wide range of uses.
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