Tag cPentane

What’s the HS Code of Cyclopentane?
The HS code of Cyclopentane is 2902199090

Cyclopentane, as a foaming agent and solvent, has brought many conveniences to our life. Cyclopentane can replace freon and be widely used in refrigerators, insulation materials for freezers and foaming agents for hard PU foam. It can also be used as a solvent for solution polymerization such as polyisoprene rubber and a solvent for cellulose ether. Cyclopentane, as a blowing agent in Polyurethane (PU) foams, is the most important raw material for high-performance insulation in refrigerators. It allows for a high energy efficiency, CO2 reduction and cost savings. At the same time, Cyclopentanes enable a particularly thin insulation for maximum volume utilisation.

Foaming technology is common in every refrigerator, and foaming materials are also very important, which are reflected in heat preservation, noise reduction, more constant box temperature and faster freezing time. There are only four kinds of foaming material technologies used in a refrigerator. The first is monochloroethane, which is the most primitive foaming process. Up to now, it can also be said to be a relatively backward foaming process. The thermal insulation performance of this foaming material is actually good. But there are two obvious shortcomings. One pollutes the atmosphere, the other is easy to crack. Therefore, internationally, the Montreal agreement clearly requires developed countries to completely ban it in 2010. Developing countries are allowed to use it until 2040. Our country has made it clear that the total phase out will be completed ten years ahead of schedule by 2030.

The second kind of Cyclopentane foaming, as a second-generation foaming technology, is used to replace monofluorodichloroethane, which is very good in environmental protection and is not easy to crack.

The third is 245fa mixed foaming agent, which initially aims to solve the problem of the lack of thermal insulation performance of cyclopentane foaming technology, and makes a balance between thermal insulation performance and environmental protection, which belongs to a transitional stage.

The fourth is HFO foaming agent, which is excellent in thermal insulation and environmental protection, and is not easy to crack. It is a luxury to use in refrigerators.

Cyclopentane is commonly used in household appliance foaming materials, and the GWP value of cyclopentane is very small. Halogen free, short life in the atmosphere, easy to decompose safely, and will not destroy the ozone layer. The thermal conductivity of gas phase is small. It can meet the technical requirements of most household appliances for thermal insulation performance.

Cyclopentane is flammable and explosive, with an explosion limit of (1.4-8.0)%. It is listed as a class a class B fire-fighting object in fire fighting. Cyclopentane is also a volatile organic compound, with a volatile amount of 8.5kg/m per hour, with a faint pungent smell. Therefore, there are strict requirements for production equipment, workshops, transportation and storage, as well as higher requirements for the quality and safety of enterprise employees.

Cyclopentane itself has low toxicity and deasterification function. Once it contacts the skin or splashes into the eyes, it should be immediately cleaned with clean water. Once cyclopentane leaks, it should be diluted and dispersed with inert gas nitrogen immediately. The above is the knowledge sharing on cyclopentane foaming process sorted out by Junyuan Petroleum Group and I hope it will be helpful to you!

Cyclopentane, also known as pentamethylene, is a kind of hydrocarbon. It is used to replace freon as a foaming agent for refrigerator freezer insulation materials and hard PU foam. It is used as a solvent for solution polymerization of polyisoprene rubber and cellulose ether. Isopentane is one of the components of petroleum ether. It is obtained through the recombination of isopentane under the action of platinum. It has a broad market prospect. High purity industrial grade requires high cyclopentane itself, so it is of great significance to strengthen the research on purification technology of high purity cyclopentane.
Cyclopentane has low thermal conductivity, good anti-aging performance, no damage to the ozone layer, and many advantages in solubility in polyols. At present, cyclopentane production mainly relies on petrochemical raw materials, mainly petrochemical C5 fraction. Cyclopentane is a component of petroleum ether in the boiling point range of 30-60 ℃, and its content is generally 5%-10%. It is distilled under normal pressure in a 8m high tower with a reflux ratio of 60:1. Isopentane and n-pentane are first evaporated, and then fractionated to obtain cyclopentane with a purity of more than 98%. Cyclopentane can also be prepared by reduction of Cyclopentanone or catalytic hydrogenation of cyclopentadiene.

Cyclopentane Blowing Agent

The spontaneous combustion temperature of cyclopentane blowing agent is about 380 ℃. The normal temperature of 50 ℃ will not cause spontaneous combustion. Harmful effects of cyclopentane inhalation of high concentrations of cyclopentane can cause central nervous system depression, although its acute toxicity is low. The symptoms caused by acute exposure are first excitement, then imbalance, even numbness and coma. Rarely die of respiratory failure. It has been reported that this product was given orally to animals, resulting in severe diarrhea, heart, lung and liver vascular collapse and brain degeneration.

Cyclopentane and Freon are both substances that are easy to liquefy and vaporize. They should absorb heat during vaporization and release heat during liquefaction; Liquid cyclopentane flows in the pipe. When it flows to the freezer, it will vaporize and absorb heat, absorbing the heat in the refrigerator and reducing the temperature in the refrigerator; When it flows into the condenser, it will be compressed and liquefied, and the absorbed heat will be released to achieve the purpose of refrigeration.
In the past, most of the traditional water tank insulation materials in the solar industry used polyurethane foaming technology. This material has many disadvantages, such as consuming oil resources, destroying the ozone layer with HCFC-141b foaming agent, and “white pollution” caused by waste foam. It does not meet the environmental protection requirements. Cyclopentane, as a new environmentally friendly foaming agent, has brought greater improvement to our environment and life, but cyclopentane is flammable and volatile, It is easy to cause combustion and explosion in case of open fire. Pay special attention to safety during use.

Junyuan Petroleum Group is a new chemical enterprise integrating R & D, production and marketing. The company’s products cover four major fields: refrigerant, carbon hydride, fluoride and chemical raw materials. Its main products are n-pentane and isopentane Pentane blowing agent, n-hexane, isohexane, n-heptane, n-octane, petroleum ether, isobutane R600a, n-butane R600, propane R290, propylene R1270, n-pentane r601, isopentane r601a, cyclopentane, isobutene, ethylene R1150, R22, R23, r507, ethane R170, methane, freon, dimethyl ether, isooctane, n-heptane, propylene butane, n-hexane, n-hexene, n-butene and other blowing agents, aerosols and solvents; The company is committed to science and technology and environmental protection industries. Its products are widely used in refrigeration, energy, electronics, pharmaceutical intermediates, scientific research, laser technology, aerospace technology, metal smelting, low-temperature refrigeration and other fields. Its customers radiate in Europe, America, the Middle East and Southeast Asia.