Difference between liquid ethylene and ethylene

In the chemical industry, ethylene (Ethylene) is an important olefin, which is widely used in the production of plastic materials such as polyethylene and polypropylene. As two different substances, liquid ethylene and ethylene are significantly different in physical properties, chemical properties and application scenarios. This article will analyze the differences between liquid ethylene and ethylene in detail from multiple perspectives to help readers better understand the characteristics and applications of these two substances.

1. liquid ethylene and ethylene structure analysis

Ethylene (C₂ Hactually) is a gas with a planar triangular molecular structure, double-bonded two carbon atoms. Its chemical formula is C? H?, its molecular weight is 28, and its density is about 1.197g/L under standard conditions. Ethylene has a stable molecular structure and a strong unsaturated bond, which makes it easy to participate in the addition reaction.

Liquid ethylene is the liquid form of ethylene under specific conditions, and its molecular structure is not significantly different from solid ethylene. The molecular arrangement of liquid ethylene is different from that of gas, and the interaction force between molecules is strong, making it liquid. Although the molecular structure of liquid ethylene is consistent with that of ethylene, its physical properties such as melting point and boiling point are significantly different from those of solid ethylene.

2. Liquid Ethylene and Ethylene Physical Properties Comparison

1. melting point and boiling point Ethylene (C₂ Hhigher) has a standard melting point of -103.15°C and a boiling point of 269.6°C. Liquid ethylene has a boiling point of about 80°C at standard atmospheric pressure (1 atm). This means that at room temperature, liquid ethylene evaporates easily, while ethylene is a gas under standard conditions.

2. Density The density of ethylene is 1.197g/L under standard conditions, while the density of liquid ethylene is about 0 at room temperature, depending on its true state. In fact, the density of liquid ethylene varies with temperature and pressure.

3. Status and storage conditions Ethylene is a gas at normal temperature, while liquid ethylene needs to be stored under specific temperature and pressure conditions. The storage temperature of liquid ethylene is usually around -60°C to avoid its rapid evaporation.

3. Liquid Ethylene and Ethylene Chemical Properties Comparison

1. chemical reaction activity The double bond of ethylene has high chemical activity and is easy to participate in chemical reactions such as addition and oxidation. The chemical properties of liquid ethylene are similar to those of solid ethylene, but its molecular structure in the liquid state will affect the efficiency and rate of its chemical reaction.

2. Stability Ethylene has a stable molecular structure, but decomposition or polymerization may occur under certain conditions (such as high temperature, strong oxidants, etc.). The stability of liquid ethylene is similar to that of solid ethylene, but its liquid state may make it more susceptible to external factors.

4. Liquid Ethylene and Ethylene Application Field Analysis

1. Application areas of ethylene Ethylene is the basic monomer in the plastics industry and is widely used in the production of plastic materials such as polyethylene and polypropylene. Ethylene is also used to make fuels, solvents and chemical intermediates.

2. Application areas of liquid ethylene Liquid ethylene has unique advantages in some industrial applications. For example, in the food industry, liquid ethylene can be used as a solvent or preservative, and in some special fields (such as the preparation of polymer materials), the fluidity of liquid ethylene may provide convenience.

5. liquid ethylene and ethylene selection and application recommendations

When selecting materials, the difference between liquid ethylene and ethylene requires specific analysis of specific issues. If a material with good stability and stable chemical properties is required, ethylene may be more suitable; and if good fluidity and easy processing characteristics are required, liquid ethylene may be more suitable.

The difference in the physical properties of liquid ethylene and ethylene also determines their scope of application in different industrial scenarios. In high temperature, high pressure environments, the stability of ethylene may be more important, and the fluidity of liquid ethylene may provide more operational flexibility.

Summary

There are significant differences in physical and chemical properties between liquid ethylene and ethylene, which affect their application in different industrial fields. The fluidity of liquid ethylene makes it advantageous in some special applications, and the stability of ethylene makes it a core raw material for plastic production. Understanding the difference between liquid ethylene and ethylene will help chemical workers select materials more scientifically, optimize production processes, and improve industrial efficiency.