Cyclopentane is an important basic chemical raw material. Because its ozone depletion potential and global warming potential are zero, it can be used to replace CFCs. It is widely used in the production of fluorine-free refrigerators, freezers, cold storage, pipeline insulation and other fields.
Cyclopentane / 2,2-dimethylbutane system is not only an azeotropic system, but also an azeotropic system. In industry, the common separation methods are extractive distillation, azeotropic distillation and extraction. Traditionally, single solvent is used as extractant in extraction. In recent years, some scholars began to study the use of mixed solvent as extractant. Lee and brown in the United States developed the extractive distillation method using mixed solvent, and some scholars in China have carried out relevant research. However, so far, there are few studies and detailed technical data reports on the extractant screening of cyclopentane / 2,2-dimethylbutane system at home and abroad, and there is a lack of systematic and feasible vapor-liquid equilibrium data of the system.
Cyclopentane, a new foaming agent for rigid polyurethane foam, is used to replace chlorofluorocarbons (CFCS), which are destructive to the ozone layer of the atmosphere. It has been widely used in the production of fluorine free refrigerators, freezer industry, cold storage, pipeline insulation and other fields. As the prohibition period of ODS stipulated in Montreal and other conventions approaches, CFCs and HCFCs products will be banned soon, and cyclopentane will become the leading role in the field of polyurethane foaming agent.
Cyclopentane
CAS: 287-92-3
Chemical formula: C5H10
Aerosol
Aerosol is one of the drug dosage forms, which refers to the preparation in which the drug and the projectile are jointly encapsulated in a pressure vessel with a valve, and the drug is sprayed quantitatively or non quantitatively by using the pressure generated by the gasification of the projectile.
Refrigerants
“Refrigerants, also known as refrigerants and snow seeds, are media substances used to complete energy conversion in various heat engines. These substances usually increase power by reversible phase change (such as gas-liquid phase change), such as steam in steam engines, snow seeds in refrigerators, etc.
Foaming Agent
The so-called foaming agent is the material that makes the object material into pores. It can be divided into chemical foaming agent and physical foaming agent. Chemical foaming agents are those compounds that can release gases such as carbon dioxide and nitrogen after heating and decomposition, and form pores in the composition of polymers.
Solvent
A solvent is a liquid (gas or solid) that can dissolve solid, liquid or gas solutes (both solvents and solutes can be solid, liquid or gas), and then become a solution.
Cyclopentane- Essential Information
| Name in Chinese | 环戊烷 |
| Name in English | Cyclopentane |
| Alias | Pentamethylene |
| English Alias | cyclopentane B&J brand 4 L |
| CAS | 287-92-3 |
| EINECS | 206-016-6 |
| Chemical formula | C5H10 |
| Molecular weight | 70.1329 |
| inchi | InChI=1/C5H10/c1-2-4-5-3-1/h1-5H2 |
| Density | 0.79g/cm3 |
| Melting point | -94℃ |
| Boiling point | 49.2°C at 760 mmHg |
| Vapor pressure | 314mmHg at 25°C |
| Refractive index | 1.433 |
| Product use | It is used to replace freon, widely used in fridge, freezer and other rigid PU foam. |
| Dangerous goods sign | F – Inflammable Materials |
| Risk terminology | R11 – Highly flammable |
| Safety terminology | S9 – keep the container in a well ventilated place. S16 – keep away from sources of ignition. S29 – do not pour into sewers. S33 – take measures to prevent static electricity. S61 – avoid release into the environment. Refer to special instructions / safety data sheets. |
| Dangerous goods transportation number | UN 1146 |
