chemical properties of nitrobenzene, what is the preparation of nitrobenzene

Nitro belongs to the second type of positioning group, and its function is to passivate the benzene ring, and the substitution reaction is more difficult to occur. So the substitution reaction of benzene is easier than that of nitrobenzene; Nitro is more prone to reduction reaction, while benzene is more difficult to reduce reaction.

The preparation of nitrobenzene is as follows:1. Prepare a certain proportion of concentrated sulfuric acid.

and concentrated nitric acid mixed acid into the reactor.

2. Add a certain amount of benzene drop by drop to the mixed acid at room temperature, shake fully, and mix evenly.

3. The reaction occurs at 50 60.

4. After removing the mixed acid, the crude products are sequentially distilled with water.

and 5 NaOH solution washed, and finally washed with distilled water.

5. Anhydrous calcium chloride will be used.

Distillation of crude nitrobenzene after drying to obtain pure nitrobenzene.

Protective measuresRespiratory system. Protection: Wear a filtering gas mask (half mask) when possible exposure to its vapors. In the event of an emergency or evacuation, it is recommended to wear a self-contained breathing apparatus.

Eye protection: Wear safety glasses.

Body protection: Breath-permeable gas suit.

Hand protection: Wear anti-benzene and oil-resistant gloves.

Other: Smoking is prohibited on the work site.

Eat and drink. Change your work clothes in a timely manner. Don't drink alcohol before and after work, and take a shower with warm water. Take care to detect poisons. Pre-employment and regular medical examinations are conducted.

The above content reference: Encyclopedia - nitrobenzene.

Benzene and HNO are heated under the action of concentrated sulfuric acid to produce nitrobenzene. Nitrobenzene is reduced to aniline under the action of Fe and concentrated HCl. Aniline reacts with bromine water to form tribromoaniline.

Tribromoaniline reacts with nano and dilute H so at low temperature to obtain diazonium sulfate salt of tribromobenzene. Diazonium salt reacts with H Po, and N+ is replaced by H to produce 1,3,5-tribromobenzene.

Nitrobenzene chemical formula: C H No

Introduction to nitrobenzene:

Nitrobenzene is an organic compound with the chemical formula C6H5NO2, which is a colorless or yellowish oily liquid with a bitter almond flavor. Insoluble in water, denser than water, soluble in ethanol, ether, benzene and oil. In case of open flame, high heat will burn, **. It reacts violently with nitric acid.

Often used as an intermediate in organic synthesis and used as a raw material for the production of aniline, for the production of dyes, spices, explosives and other organic synthesis industries, on October 27, 2017, the World Health Organization's International Agency for Research on Cancer announced the list of carcinogens for preliminary reference, nitrobenzene in the list of class 2b carcinogens.

Chemical properties: The chemical properties are active, and can be reduced to diazonium salts, azobenzenes, etc. In case of open flame, high heat will burn, **. It reacts violently with nitric acid. It is obtained by nitrification of benzene by mixing nitric acid and sulfuric acid. It is used as an intermediate in organic synthesis and as a raw material for the production of aniline.

Nitrobenzene must undergo electrophilic substitution reaction under strong conditions to generate meta-products. It has a weak oxidation effect and can be used as an oxidant for oxidative dehydrogenation. Nitrobenzene is often prepared by reacting a mixture of nitric acid and sulfuric acid with benzene.

It is mainly used for the preparation of aniline, benzidine, azobenzene, etc. Nitrobenzene is highly toxic, inhaling a large amount of vapor or ** a large amount of contamination, can cause acute poisoning, make hemoglobin oxidation or complexation, blood turns dark brown, and cause headache, nausea, vomiting, etc.

The explanation of the word nitrobenzene is: chemical formula C H No. Light yellow oily liquid.

It smells of bitter almonds. The vapor is toxic. Insoluble in water, acid, alkali, soluble in ethanol, ether, benzene.

The chemical properties are active, and can be reduced to diazonium salts, azobenzene, etc. It is obtained by nitrification of benzene by mixing nitric acid and sulfuric acid. It is used as an intermediate in organic synthesis and as the first base raw material for the production of aniline.

The explanation of the word nitrobenzene is: chemical formula C H No. Light yellow oily liquid.

It smells of bitter almonds. The vapor is toxic. Non-lead rotten soluble in water, acid, alkali, soluble in ethanol, ether, benzene.

The chemical properties are active, and can be reduced to diazonium salts, azobenzene, etc. It is obtained by nitrification of benzene by mixing nitric acid and sulfuric acid. It is used as an intermediate in organic synthesis and as a raw material for the production of aniline.

The structure is: nitrate (left and right structure) base (upper and lower structure) benzene (upper and lower structure). The pinyin is:

xiāojīběn。The part of speech is: noun.

The phonetic pronunciation is: one by one

What is the specific explanation of nitrobenzene, we will introduce it to you through the following aspects:

1. Online explanation [click here to view the details of the plan].

Nitrophenyl nitrobenzene, an organic compound, also known as dense spot oil, bitter almond oil, is a colorless or yellowish oily liquid with bitter almond flavor. Insoluble in water, denser than water; Soluble in ethanol, ether, benzene and oil. In case of open flame, high heat will burn, **.

It reacts violently with nitric acid. Nitrobenzene is obtained by nitrification of benzene by mixing nitric acid and sulfuric acid. It is used as an intermediate in organic synthesis and as a raw material for the production of aniline.

It is used in the production of dyes, spices, explosives and other organic synthesis industries. On October 27, 2017, the World Health Organization's International Agency for Research on Cancer (IARC) released a preliminary list of carcinogens, and nitrobenzene was included in the list of category 2b carcinogens.

Idioms about nitrobenzene.

Fleeing in a hurry is not despised under the high foundation of the human wall, and it is not too grassy, and the three Gu Bodao have no children, and the foundation of the tree is unexpectedly opened to start a business.

Words about nitrobenzene.

The grass house fled from the wall in a hurry, and the high foundation of the Bodao had no children to open the foundation and establish a business, and it was not even more like gunpowder smoke and rain and gunpowder smoke were permeated, and Huaiqin leaked out of despair and was not named.