Category n-Pentane Manufacturer

# Polyurethane Foaming Technology Polyurethane (PU) is a versatile material with excellent properties, widely used in various industries such as automotive, household appliances, construction, electronics, footwear, packaging, helmets, sports equipment, and more. Polyurethane foaming agent is the most important additive in PU foam plastics, which directly affects the physical and mechanical properties, foam density, temperature resistance, and other aspects of PU foam. The foaming agents used to produce PU foam are usually divided into two types: chemical foaming agents and physical foaming agents. ## Chemical foaming agents Chemical foaming agents are gases produced by chemical reactions (water and isocyanate react to release CO₂) that make polyurethane foam. Examples are water, formic acid, higher organic acids (carboxylic acids), etc. ## Physical foaming agents Physical foaming agents are vaporized by the heat generated by the polyurethane polymerization reaction, making polyurethane foam. ## The evolution of foaming agents The first generation of foaming agents: low-boiling hydrocarbon compounds, mainly CFC-11, CFC-12, etc. In recent years, it has been found that these compounds are the culprit of destroying the earth’s ozone layer. After the fluorochlorocarbons enter the stratosphere, they are exposed to intense ultraviolet rays and release chlorine atoms, which cause the ozone layer to break and form ozone holes, endangering the survival of humans and other organisms. They were completely banned in 2010. The second generation of foaming agents: HCFCs (HCFC-141b difluorodichloroethane), with ideal thermal conductivity values, do not require major changes in production processes, and are widely used. However, they have high prices, and to achieve the same insulation effect as CFC-11, the foam density needs to be increased by about 10%; HCFCs have ODP values (ozone depletion potential), which still cause damage to the ozone layer. They are only a transitional foaming agent and will be gradually restricted to banned. The third generation of foaming agents: They are green foaming agents with performance close to CFC-11 and ODP (ozone depletion potential) of zero, such as HFCs, liquid CO₂, pentane series, etc. The pentane series includes cyclopentane, isopentane, and n-pentane (C5H12), which have an ODP (ozone depletion potential) value of zero, a low GWP (global warming potential) value, low toxicity, and little impact on the environment. At present, developed countries have fully applied the third-generation foaming agents. The domestic polyurethane industry started late, and small and medium-sized manufacturers of PU polyurethane composite panels are still using the second generation. Baoye Group’s Italian fully automatic composite panel production line in the Economic Development Zone of Deyang City, Sichuan Province uses the third-generation n-pentane series from Junyuan Petroleum Group, which is green and environmentally friendly, and contributes more to the realization of the country’s “carbon peak and carbon neutrality” dual carbon goals. ## N-pentane polyurethane foaming technology ### The characteristics of n-pentane Appearance and properties: colorless transparent liquid, with a faint aromatic odor. Melting point (℃): -129.8 Relative density (water=1): 0.63 Boiling point (℃): 36.1 Relative vapor density (air=1): 2.48 Critical temperature (℃): 196.4 Critical pressure (MPa): 3.37 Flash point (℃): -40 Explosion upper limit (%): 7.8 Ignition temperature (℃): 260 Explosion lower limit (%): 1.5 It is mainly used in the continuous production line of polyurethane panels, as polystyrene foaming and polyurethane foaming. ### The requirements of n-pentane for equipment 1. Because n-pentane is flammable, explosive, and volatile, it has special requirements for pumps and pipelines. For users with large production volume, it is recommended to use underground storage tanks. 2. During the production process, to prevent n-pentane leakage, ventilation should be paid attention to at all times, and n-pentane leakage sensors should be installed in the main positions. 3. The metering device should be installed in a separate ventilated room and equipped with a n-pentane leakage sensor. The pre-pressure and high-pressure of the pump should be equipped with detection devices. 4. The equipment should meet the requirements of producing high flame retardant (PIR) double-track of more than 30 meters. ### The advantages of n-pentane foaming technology 1. Compared with cyclopentane, n-pentane has better foam size stability. After the panel is formed, the shrinkage of the panel in the thickness and width directions is smaller than that of cyclopentane foam. 2. N-pentane foaming products have higher compressive strength in the thickness direction than cyclopentane and HCFC-141b foaming products. The compressive strength of PIRI can reach 182kPa. 3. Under almost the same foam core density, the feed density of the n-pentane foaming formula is lower. This means that the feed amount is reduced, the foam cost has a downward trend, and the compressive strength of the foam can reach the same or higher level. 4. Because HCFC-141b is highly polar and hydrophilic, n-pentane is weakly polar and oleophilic, and isocyanate is also oleophilic, n-pentane has better solubility with isocyanate, and the emulsification effect is better during high-pressure mixing in production. Therefore, the hard foam after n-pentane foaming has uniform and finer pores. 5. After a certain formula adjustment, the flame retardant performance of the n-pentane foaming product can reach or exceed the HCFC-141b foaming product. 6. The thermal insulation performance of the polyurethane rigid foam made by using n-pentane as a foaming agent can meet the thermal insulation performance requirements of cold storage panels. Foaming agents are related to the molding and insulation of polyurethane foam, which affects the product quality; they are also related to human protection of the atmosphere and the impact on climate change.

n–Pentane belongs to the fourth generation of hydrocarbon foaming agent, and is currently the best substitute product for chlorofluorocarbon foaming agent (141b). With the advantages of energy saving, environmental protection and high performance, it is widely used in cold storage insulation panels, Animal husbandry and fungus breeding plates, refrigerated vehicle insulation materials, pipeline insulation materials and other fields.

n-Pentane (n-Pentane) chemical formula C₅H₁₂, the fifth member of alkanes. There are 2 isomers of n-pentane: isopentane (boiling point 28°C) and neopentane (boiling point 10°C), the term “pentane” usually refers to n-pentane, its linear isomer.

Uses of n-Pentane: 1. Used as a low boiling point solvent, foaming agent in plastic industry, also used with 2-methylbutane as automobile and aircraft fuel, artificial ice, anesthetic, and synthesis of amyl alcohol and isopentane.

SINOPETROCHEM reported on April 19th that the EXW quotation for pentane foaming agents (with a total pentane content >99%) in the Chinese market is CNY 7,350/MT, and production and sales are normal.

April 19, 2023 USD TO CNY TODAY

Actual USD to CNY exchange rate equal to 6.8750 Chinese Yuans per 1 Dollar.

Pentane is colourless with a very low odour and high volatility thanks to its low, narrow boiling range – it is among the lowest boiling hydrocarbon liquids and so evaporates at a very high rate. It is used principally as a blowing agent in foam production, as a propellant in aerosols and as reaction media for polymerisation processes.

Isopentane, Cyclopentane and Normal Pantene Blend Market Growth and Share Research 2023 | by Industry Types [Pentane 85/15, Pentane 80/20], and Applications [EPS Blowing Agent, Electronic Cleaning ,Chemical Solvent], Global Cyclopentane, Isopentane and Normalpentane Blend key players include Shell, Phillips 66, Junyuan Petroleum Group, ExxonMobil Chemical, TOP Solvent, etc.

China is the largest market, with a share over 30Percent, followed by Europe and North America, both have a share about 50Percent.
In terms of product, Pentane 60/40 is the largest segment, with a share over 30Percent. And in terms of application, the largest application is EPS Blowing Agent
, followed by Chemical Solvent, Electronic Cleaning, etc.

Cyclo-isopentane polyurethane foam insulation meets EU ROHS directive for a green and safe environment. Optimized hydrocarbon refrigeration system. As a blowing agent, cyclo- pentane has been confirmed as a long-term alternative to. R11. The mixture of isopentane and pentane was also.

Junyuan Petroleum Group is one of the largest n-Pentane, Isopentane and Cyclopentane manufacturers in China and your partner for tailor-made n-Pentane, iso-Pentane, Cyclopentane and blends.

The price of n-Pentane in Chinese market today, CNY/MT, is for reference only, and the final transaction price shall prevail.

General description. Pentane, a linear aliphatic hydrocarbon, is one of the main constituents of light straight-run (LSR) gasoline fraction in crude oils. Its isomerization can improve the octane number of gasoline.

n-Pentane is a volatile, isomeric, organic compound consisting of an alkane with five carbon atoms. Available in various quantities, purities, and reagent grades, it is an evaporable, nonpolar solvent used in liquid chromatography and industrial applications.

However, the name Pentane can sometimes refer to the two branched-form isomers of C5H12, which are methylbutane (isopentane) and dimethylpropane (neopentane). Unsurprisingly, Pentane exhibits similar chemical properties to the neighboring alkanes.

Are you looking for Pentane manufacturers in China? Find where to buy Pentane products from suppliers in China, including: distributors, industrial manufacturers in China, bulk supplies and wholesalers of n-Pentane, Isopentane, Cyclopentane and Pentane Blends. Search for Pentane products or transportation services, visit our website.

Pentane | C5H12 | – structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Pentane. CH3(CH2)3CH3. Synonyms: . CAS 109-66-0. Molecular Weight 72.15. Browse Pentane and related products at Junyuan Petroleum.

What are the different types of pentane?

Based on type, the market is classified into n-pentane, isopentane, and Cyclopentane. n-Pentane generated the maximum revenue in 2022, and is expected to remain dominant throughout the analysis period, as it is widely used in various personal care and industrial aerosol products as an aerosol propellant.

n-Pentane

The press conference on industrial application results of pentane as a new welding and cutting fuel was held at China Shipbuilding Group Guangzhou shipbuilding International Co., Ltd. This achievement is the first successful industrial application of pentane as a new welding and cutting fuel in China.

“Pentane” usually refers to n-pentane, with the chemical formula of C5H12, which is the fifth member of alkanes. Pentane can be obtained from catalytic cracking and thermal decomposition of natural gas or petroleum, so pentane is also a by-product of oil refining process. In the past, it was mainly used to make low melting point organic solvents, foaming agents for plastic industry, artificial ice, etc. At the same time, pentane also has the characteristics of high combustion calorific value. After full combustion, pentane is safer and more environmentally friendly than conventional natural gas and other welding and cutting fuels. It is an ideal substitute for conventional fuels. Its high calorific value can also perfectly solve the problem of cutting thick ship plates and special steel plates in the shipbuilding industry.

It is understood that in order to promote the transformation and upgrading of product structure, Guangzhou shipbuilding international has undertaken the largest order for super large container ships with more than 16,000 containers in South China. The crack arrest steel applied to the deck, hatch enclosure and other key parts of the super large container ship has large thickness and high strength. It can achieve one-time forming by cutting with pentane with higher fuel value.

In three years, Guangzhou shipbuilding international and Shenghuo energy technology (Guangdong) Co., Ltd. have jointly developed a mobile blended light oil gasification system, which has solved the technical problems of stable gasification technology of liquid pentane welding and cutting fluid under normal temperature and pressure, pipeline transportation and pressure allocation of gasification equipment, and realized that pentane welding and cutting fluid can be supplied in the form of tank, and pentane welding and cutting fluid supply points can also be established through the gasification system, It provides a new green fuel choice for the industrial application of shipbuilding enterprises.

After application and inspection by a third-party testing agency, pentane welding and cutting fluid has obvious fuel saving effect, and the consumption of fuel and oxygen has been reduced by more than 30%; Cutting efficiency is close to or slightly higher than that of the existing natural gas; Compared with natural gas, it has obvious advantages in reducing slag hanging and preventing edge melting in medium and thick ship plate cutting.

A device for flame cutting and welding with pentane liquid as fuel comprises a jet suction cutting and welding torch, an evaporator and an oxygen cylinder. The oxygen joint of the jet suction cutting and welding torch is connected with a pressure regulating valve installed on the oxygen cylinder through a hose, and the gas joint of the jet suction cutting and welding torch is connected with the evaporator through a hose. The gas joint is equipped with a gas valve, and the evaporator is also equipped with a gas valve. The evaporator is equipped with an explosion-proof wire and a sieve plate, The screen plate is located at the bottom of the explosion-proof wire, and the lower part of the screen plate is equipped with a check valve and a silencing distributor. One end of the check valve is connected with the silencing distributor, and the other end is connected with the breathing valve located outside the evaporator through a pipe. A floating ball valve is also installed inside the evaporator, which is connected with the make-up valve outside the evaporator through a pipeline. After adopting the above device, compared with the gasoline cutting welder, the ignition performance is better and the stability is higher. The flame temperature of cutting and welding is up to 260 (RC ~ 280 (TC), and it is easy to adjust to carbonization flame, neutral flame and oxidation flame. When acetylene is burning, the carbonization flame has thick black smoke. The utility model does not have any black smoke, so the combustion ignition is easy, the flame is stable, and there is no backfire. The operation is simple. When cutting and welding is stopped, there is no smoke in the evaporator

It can stop working automatically because of negative pressure. The evaporator of the utility model has the advantages of simple structure, easy fabrication and low cost. Due to the negative pressure working condition, and an appropriate amount of explosion-proof wire is filled in the evaporator, the safety is very high. Practice has proved that the energy saving of the scheme of the utility model is more than 50% compared with that of acetylene gas and more than 25% compared with that of propane gas. Since the combustion temperature is about 400-500 ℃ higher than that of propane gas, steel plates or components with a thickness of less than 300mm can be cut smoothly. The steel plates cut by the combustion temperature are easier to process than the cutting edges cut by acetylene, and there is no slag at the bottom of the cutting edges, which is suitable for industrial needs. Figure 1 is the structural diagram of the device of the utility model. Specific implementation mode: the utility model is further described below in combination with the attached drawings. As shown in Figure L, this embodiment includes a jet suction cutting and welding torch L, an evaporator 2 and an oxygen cylinder 3. The oxygen joint of the jet suction cutting and welding torch 1 is connected with the pressure regulating valve 11 installed on the oxygen cylinder 3 through a hose. The gas joint of the jet suction cutting and welding torch 1 is connected with the evaporator 2 through a hose. The gas joint is equipped with a gas valve 12, and the evaporator 2 is also equipped with a gas valve 4. The evaporator is equipped with an explosion-proof wire 7 and a sieve plate 8, The screen plate 8 is located at the bottom of the explosion-proof wire 7. The lower part of the screen plate 8 is equipped with a check valve 9 and a silencing distributor 10. One end of the check valve 9 is connected with the silencing distributor 10, and the other end is connected with the breather valve 5 located outside the evaporator 2 through a pipe. A floating ball valve 13 is also installed inside the evaporator 2, and the floating ball valve 13 is connected with the make-up valve 6 outside the evaporator through a pipe. The specific working method of the utility model is as follows: when the regulating valve 11 on the oxygen cylinder 3 is opened and adjusted to the required pressure, the preheating valve 14 in the jet type cutting and welding torch L is opened, the jet suction device in the jet type cutting and welding torch 1 will generate negative pressure in the fuel channel, and then the gas valve 12 on the gas joint and the evaporator gas valve 4 are opened. The negative pressure will directly generate negative pressure in the evaporator 2 through the connecting pipe, and the breathing valve 5 is opened, The air flows upward through the breather valve 5, the check valve 9 and the silencing distributor 10, is evenly distributed through the sieve plate 8, and is violently mixed with the liquid amyl in the boiling state in the explosion-proof wire 7. The check valve 9 in the evaporator 2 is used to prevent the internal liquid from leaking out when the evaporator 2 is operating accidentally. Due to the low latent heat of vaporization and low boiling point of pentane, it can quickly absorb the heat of the external environment of the evaporator 2 made of metal and evaporate into a mixture of pentane gas and air with high concentration under the action of negative pressure. Under the action of negative pressure, pentane is continuously pumped into its injection and suction device by the injection and suction torch 1 and mixed with oxygen in proportion to form a fuel gas which is injected into the nozzle for combustion to achieve the purpose of cutting and welding. The pentane liquid can be filled by opening the make-up valve 6, which is sucked from the fuel storage tank to the evaporator 2. When the liquid level reaches a certain height, it will be automatically closed by the float valve 13. If ioo cutting torch is adopted for the above-mentioned jet suction cutting torch, the oxygen pressure of the cutting torch is 0.6MPa, the negative pressure of the gas interface is about 0.04 ~ 0.05Mpa, and the evaporation capacity of pentane liquid is 0.26 ~ 0.3l/h. The flame of the cutting torch can be easily adjusted to neutral flame, and the flame temperature is 2600 ° C ~ 2800 ° C, which can smoothly cut 100mm thick steel plate; If No. 8 jet suction welding torch is used for jet suction cutting torch 1, the required oxygen pressure is 03mpa, the negative pressure of gas interface is 0.035 ~ 0.04MPa, and the evaporation capacity of pentane liquid is 0.1 ~ 0.12l/h. The flame of the cutting torch can be easily adjusted to oxidation flame, neutral flame and carbonization flame, The flame temperature is 2600’c ~ 280 (TC, welding can be carried out smoothly. To sum up, the advantages of the utility model are: 1. The ignition performance of the utility model is better than that of the gasoline cutting welder, and the stability is high. The original propane injection cutting torch and welding torch do not need to be matched with the specially manufactured cutting torch or welding torch, which can save the enterprise’s equipment reinvestment investment and facilitate the purchase of vulnerable parts; 2. The safety is high, even if the cutting torch or welding torch is broken or accidentally damaged when working, it will not produce Danger caused by leakage of raw gas. Since the evaporator is filled with explosion-proof wire according to the standard, no explosion will occur; 3. The energy-saving effect is remarkable, and the production cost is greatly reduced; 5. As a by-product of petroleum industry and a class B green fuel, the waste gas after combustion is harmless to human body, which not only solves the problem of by-product of petroleum industry, but also ensures the safety and health of users; 6. The efficiency of cutting and welding has been improved. The cutting speed is slightly faster than that of acetylene. It is easy to operate and master. It is convenient to carry out construction outside. The utility model can not only be applied to the cutting of steel and the welding of metal, but also can be widely applied to glass fusion to replace the commonly used propane gas and natural gas, and has remarkable safety and energy-saving effects.

1. The device for flame cutting and welding with pentane liquid as fuel includes a jet suction cutting and welding torch (1), an evaporator (2) and an oxygen cylinder (3), which is characterized in that the oxygen joint of the jet suction cutting and welding torch (1) is connected with the pressure regulating valve (11) installed on the oxygen cylinder (3) through a hose, and the gas joint of the jet suction cutting and welding torch (1) is connected with the evaporator (2) through a hose, wherein the gas joint is provided with a gas valve (12), and the evaporator (2) is also provided with a gas valve (4), An explosion-proof wire (7) and a sieve plate (8) are installed inside the evaporator, the sieve plate (8) is located at the bottom of the explosion-proof wire (7), a check valve (9) and a silencing distributor (10) are installed below the sieve plate (8), one end of the check valve (9) is connected with the silencing distributor (10), and the other end is connected with the breather valve (5) located outside the evaporator (2) through a pipe.

Today is the second day of the new year, and the prices of #pentane, #hexane and #heptane series products have not changed.
Industry News
According to market news, the Ministry of Commerce recently approved and issued the allowable import volume of the first batch of crude oil for non-state trade in 2022, with a total amount of 109.03 million tons, a decrease of 11% compared with the same period in 2021. The quota of some independent refineries in Shandong and Northeast China was reduced.
After the impact of the epidemic on the national economy in 2020, Saudi Arabia, the world’s largest oil exporter, continued to pick up its foreign trade in 2021. According to the statistics released by the Saudi National Bureau of statistics on the evening of the 26th local time, Saudi Arabia’s foreign exports in October 2021 increased by 90% over the same period last year. Affected by the rising oil price, crude oil exports reached 82.4 billion Saudi Riyals (about 140.08 billion yuan), an increase of 123.1% over October 2020; The export volume of non oil commodities increased by 25.5% over the same period last year, and the total export volume also increased by 12.2% over September 2021.
Earlier this month, the Saudi Ministry of Finance announced the national budget for 2021-2022, which is expected to have a fiscal surplus for the first time in nine years. The world economic outlook report released by the International Monetary Fund in October also predicts that Saudi Arabia’s economic growth will reach 2.8% in 2021 and further increase to 4.8% in 2022.

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Part #:JunYuan-G102041959
CAS: 109-66-0

What does n-Pentane mean?
(ˈpɛnteɪn) n. (Elements & Compounds) an alkane hydrocarbon having three isomers, esp the isomer with a straight chain of carbon atoms (n–pentane) which is a colourless flammable liquid used as a solvent. Formula: C5H12.

What is n-Pentane used for?
n–Pentane is a flammable liquid. It is used as a solvent, as a build- ing block chemical in reactions to form other industrial substances, as a component of fuel, and as an aerosol propellant. n–Pentane has been used as the blowing agent of choice for expanded polystyrene since the 1970s.

Is n-Pentane soluble?
n-Pentane appears as a clear colorless liquid with a petroleum-like odor. Flash point 57°F. Boiling point 97°F. Less dense than water and insoluble in water.

How dangerous is pentane?
► Inhaling Pentane can irritate the nose and throat.
► Exposure can cause headache, dizziness, lightheadedness, and passing out. may cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency.

Is pentane heavier than air?
Pentane is extremely flammable. Its flash point is minus 50 °C and its boiling point 36 °C. It is heavier than air and odourless. As it is heavier than air the vapour given off can collect in low-lying areas or containers and create a persistent flammable atmosphere, which if ignited can cause a flash fire.

Is pentane acidic or basic? Pentane

Is n Pentane polar or nonpolar?
n–pentane is a hydrocarbon. Hydrocarbons are non polar. Hydrocarbons contain two types of bonds, one is C-C( non polar) bond and other is C-H(slightly polar) bond. Now due to presence of same C-H bond at terminals net dipole moment is zero, hence they are non polar.

What is the formula of pentene?
C5H10

Synonyms: Pentane

Danger

Specification Test Results

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