Is there an expert who can use ethylene .

The largest amount of ethylene is used in the production of polyethylene, accounting for about 45% of ethylene consumption; followed by ethylene dichloroethane and vinyl chloride, which are produced from ethylene; Ethylene oxidation to ethylene oxide and ethylene glycol. In addition, ethylene hydrocarbonization can be used to make styrene, ethylene oxidation to acetaldehyde, ethylene to synthesize alcohol, and ethylene to produce higher alcohols.

Ethylene is a phytogenous hormone that can cause fruit ripening, which plays an important role in the fruit ripening and senescence process. The application of exogenous ethylene can promote the generation of endogenous ethylene in unripe fruits, strengthen gas exchange and a series of changes in the fruit ripening process, which is the theoretical basis for artificial ripening of fruits, and it is also the positive side of human successful use of ethylene. However, if it is not handled well during storage, ethylene can also promote the fruit to become softer, reduce the life expectancy, weaken the resistance, and be perishable and disease-prone.

Ethylene is the basic chemical raw material of BAI synthetic fiber, synthetic rubber glue, synthetic plastic (polyethylene and polyDAO vinyl chloride), synthetic ethanol (wine back essence), and is also used in the manufacture of vinyl chloride, styrene, ethylene oxide, acetic acid, acetaldehyde, ethanol and explosives, etc., and can also be used as a ripening agent for fruits and vegetables, and is a proven plant hormone.

Ethylene is one of the largest chemical products in the world, and the ethylene industry is the core of the petrochemical industry, with ethylene products accounting for more than 75% of petrochemical products and occupying an important position in the national economy. The world has taken ethylene production as one of the important indicators to measure the development level of a country's petrochemical industry.

The physiological functions are: triple reaction, promoting fruit ripening, promoting leaf senescence, inducing adventitious roots and root hair genesis, breaking the dormancy of plant seeds and buds, inhibiting the flowering of many plants (but can induce and promote the flowering of pineapple and its congeners), and changing the direction of flower sex differentiation in the early stage of flower development in dioecious plants.

1) Ethyl copyene is an important chemical raw material, which can be used to make a series of chemical products such as polyethylene.

2) Ethylene is a plant growth regulator, DAO plants will produce ethylene in many stages of the life cycle, such as germination, growth, flowering, fruit ripening, senescence, withering, etc.

3) Ethylene can also be used as a ripening agent for fruits, and most of the fruits produced in the south are picked when they are not ripe and transported to the north. A small amount of ethylene is filled with a small amount of ethylene in the warehouse where the unripe fruit is stored, and it is ripened before being sold. Conversely, in order to prolong the life of the fruit or flower and facilitate long-distance transportation, people put silica soaked in potassium permanganate solution in a closed container containing the fruit or flower to absorb the ethylene produced in the fruit or flower.

Ripening agents, such as tomatoes that are still green, will be red the next day when sprayed with ethylene.

What does ethylene do on plants.

Basic Information:

Chinese name. Vinyl Chinese alias.

English name. ethene

An English alias. r1150;athylen;c2h4;etileno;acetene;ethylene;elayl;ethylen;ethen;ethylene;CAS number.

Molecular formula: C2H4

Molecular weight physicochemical properties:

Colorless compressed gas with a characteristic odor.

Refractive index, freezing point, flash point -100 °C

Storage conditions. The warehouse is ventilated and dried at low temperature and stored separately from the oxidant.

Melting point 169 °C (lit)

Density boiling point 104 °C (lit)

Vapor density. vsair)

Uses of Ethylene:

1.It is mainly used as a monomer for copolymerization with vinyl acetate to make EVA resin and VAE emulsion, and is used in the manufacture of adhesives and coatings. Ethylene is one of the basic raw materials of petrochemical industry.

First, it is widely used. In terms of synthetic materials, it is widely used in the production of polyethylene, vinyl chloride and polyvinyl chloride, ethylbenzene, styrene and polystyrene, as well as ethylene propylene rubber. In terms of organic synthesis, it is widely used in the synthesis of ethanol, ethylene oxide and ethylene glycol, acetaldehyde, acetic acid, propionaldehyde, propionic acid and its derivatives. Chlorinated ethylene, chloroethane and bromoethane can be produced by halogenation; It can be made into olefins through oligomerization, and then produce higher alcohols, alkylbenzenes, etc., which can provide abundant basic chemical raw materials for the development of synthetic resins, synthetic fibers, synthetic rubber, basic organic synthesis raw materials, and fine chemicals, such as pesticides, medicines, dyes, coatings, additives, surfactants, fragrances and ion exchange resins.

It is used in agriculture as a fruit ripening agent, but ethylene can also accelerate the decomposition of chlorophyll, make fruits and vegetables turn yellow, and promote the aging and quality decline of fruits and vegetables. Therefore, the use of ethylene as a fruit ripening agent must be before the fruit is ripe, and the treatment concentration and time should be appropriate. In order to slow down the ripening and senescence of fruits and vegetables after harvest, it is also necessary to control the amount of ethylene produced in the fruit during storage.

2.It is used in the manufacture of synthetic rubber, synthetic resins, synthetic fibers, plastics, etc. It can also synthesize explosives and organic synthetic products such as ethanol, acetaldehyde, acetic acid, ethylene oxide, etc., and can replace acetylene to cut and weld metals, and can also be used as an accelerator to ripen fruits.

3.It is used to make polyethylene, polyvinyl chloride, acetic acid, etc.

Ethylene is a gas that can be produced by various organs of higher plants. The physiological effects of ethylene are very wide, one of the most important of which is to promote fruit ripening. As you know, green and hard green bananas are not only not fragrant, but also very astringent, and they are not edible at all.

But put a few ripe apples or pears in a box of green bananas, cover the lid, and soon the whole box of green bananas will become fragrant ripe bananas. Why is that? This is because ripe apples release ethylene, which promotes banana ripening.

In the early days, our people knew how to use smoke to promote the ripening of pears, also because of the presence of ethylene in the smoke.

In addition to the ripening effect, ethylene can also promote leaf and fruit shedding, relieve dormancy, and induce the formation of female flowers in the flowers of some plants. Since ethylene is a gas, it is very inconvenient in production and application, so people use a liquid compound ethephon instead. Ethephon has the characteristic that it decomposes to produce ethylene when the pH value is higher.

Of course, the pH in the plant body is generally higher, so ethephon will release ethylene gas after entering the cell and play a role, so ethephon is also called "liquid ethylene". Now, ethephon has been widely used in agricultural production, such as the ripening of tomatoes, bananas, apples, grapes, citrus and other fruits, the excretion of rubber latex, the opening of cotton bells and spit flocculation, etc., are inseparable from ethephon.

What does ethylene do on plants.

Ethylene is an important basic raw material for organic chemicals, mainly used in the production of polyethylene, ethylene propylene rubber, polyvinyl chloride, etc. Ethylene is one of the most basic raw materials in petrochemical industry. In terms of synthetic materials, it is widely used in the production of polyethylene, vinyl chloride and polyvinyl chloride, ethylbenzene, styrene and polystyrene, as well as ethylene propylene rubber.

What is ethyleneEthylene is a colorless, slightly sweet and slightly aromatic gas with an unsaturated double bond structure in its molecule, which makes it chemically quite active and can react with a variety of chemicals to form important organic chemical products. Ethylene is an important basic raw material for modern petrochemical industry, and people often use ethylene production and plant scale to measure the development level of a country's petrochemical industry.

The main production method of modern ethylene production is petroleum hydrocarbon high-temperature steam cracking. Petroleum contains a variety of hydrocarbons with long carbon chains, and in order to turn these compounds into important chemical raw materials, it is necessary to reduce the number of carbon atoms in the molecule and remove some hydrogen atoms, a process called cracking. Typically when oil is heated to over 750 degrees Celsius to over 850 degrees Celsius, a complex cracking reaction occurs to produce olefins, alkynes, and aromatic hydrocarbons.