% Change in Product Prices Today.
Pentane blowing agent products increased by 1.43% compared with yesterday.
Why is it not feasible to ship Hexane products by air?
Because the cost of air transportation will be very high, we all know that a 40 foot container can load 160 drums, 130 kilograms per drum, a total of 20.8 tons of n-Hexane. The sea freight to Nhava Sheva is USD 3,500 How much will it cost if we fly it by air? The high cost of freight is hard to imagine.
The most important point is that air transportation also has special requirements for packaging. The steel drums provided by our steel drum suppliers meet the requirements of international sea and land transportation, but can not meet the standards of international air transportation.
Proper liquid bulk tanker loading or unloading is crucial to the quality maintenance of chemical products. And if things go wrong here, the consequences are usually catastrophic.
The tanker loading and unloading process often includes the inspection of the truck, trailer, and equipment, and verifying that the right tanker is unloading the right chemical product into the right storage tank. It also requires an expert level of competence by the driver to pay attention while the process is ongoing and spot potential issues before they develop.
Because the cost of air transportation will be very high, we all know that a 40 foot container can load 160 drums, 130 kilograms per drum, a total of 20.8 tons of n-Hexane. The sea freight to Nhava Sheva is USD 3,500 How much will it cost if we fly it by air? The high cost of freight is hard to imagine.
The most important point is that air transportation also has special requirements for packaging. The steel drums provided by our steel drum suppliers meet the requirements of international sea and land transportation, but can not meet the standards of international air transportation.
Proper liquid bulk tanker loading or unloading is crucial to the quality maintenance of chemical products. And if things go wrong here, the consequences are usually catastrophic.
The tanker loading and unloading process often includes the inspection of the truck, trailer, and equipment, and verifying that the right tanker is unloading the right chemical product into the right storage tank. It also requires an expert level of competence by the driver to pay attention while the process is ongoing and spot potential issues before they develop.
The classification and size order of polar solvents
Polar solvent
Polar solvent refers to the solvent containing polar groups such as hydroxyl or carbonyl, that is, the solvent molecule is a polar molecule. The polarity of the molecule is caused by the non coincidence of the centers of gravity of positive and negative charges in the molecule. The physical quantity used to characterize the polarity of molecules is dipole moment or dielectric constant. A large dielectric constant indicates a large polarity.
Chemical covalent bond can be divided into polar bond and nonpolar bond. Nonpolar bonds are common electron pairs that are not offset and appear in simple substances, such as O2; A polar bond is an offset of a common electron pair, such as HCl. When the offset is very strong, it seems that one side completely loses electrons and the other side gets electrons, which will become ionic bonds, such as NaCl.
The polarity of a compound depends on the functional groups and molecular structure contained in the molecule. The polarity of various compounds increases in the following order:
– CH3, – CH2 -, – CH =, – C III, – o-r, – S-R, – NO2, – n (R) 2, – ocor, – CHO, – COR, – NH2, – Oh, – COOH, – SO3H
Strong polar solvent
Methanol > ethanol > isopropanol
Medium polar solvent
Ethyl cyanide ＞ ethyl acetate ＞ chloroform ＞ dichloromethane ＞ ether ＞ toluene
Nonpolar solvent
Cyclohexane, petroleum ether, hexane, pentane
Polarity order of single solvent
Petroleum ether (small) → cyclohexane → carbon tetrachloride → trichloroethylene → benzene → toluene → dichloromethane → chloroform → ether → ethyl acetate → methyl acetate → acetone → n-propanol → methanol → pyridine → acetic acid (large)
Polar solvent
Polar solvent refers to the solvent containing polar groups such as hydroxyl or carbonyl, that is, the solvent molecule is a polar molecule. The polarity of the molecule is caused by the non coincidence of the centers of gravity of positive and negative charges in the molecule. The physical quantity used to characterize the polarity of molecules is dipole moment or dielectric constant. A large dielectric constant indicates a large polarity.
Chemical covalent bond can be divided into polar bond and nonpolar bond. Nonpolar bonds are common electron pairs that are not offset and appear in simple substances, such as O2; A polar bond is an offset of a common electron pair, such as HCl. When the offset is very strong, it seems that one side completely loses electrons and the other side gets electrons, which will become ionic bonds, such as NaCl.
The polarity of a compound depends on the functional groups and molecular structure contained in the molecule. The polarity of various compounds increases in the following order:
– CH3, – CH2 -, – CH =, – C III, – o-r, – S-R, – NO2, – n (R) 2, – ocor, – CHO, – COR, – NH2, – Oh, – COOH, – SO3H
Strong polar solvent
Methanol > ethanol > isopropanol
Medium polar solvent
Ethyl cyanide ＞ ethyl acetate ＞ chloroform ＞ dichloromethane ＞ ether ＞ toluene
Nonpolar solvent
Cyclohexane, petroleum ether, hexane, pentane
Polarity order of single solvent
Petroleum ether (small) → cyclohexane → carbon tetrachloride → trichloroethylene → benzene → toluene → dichloromethane → chloroform → ether → ethyl acetate → methyl acetate → acetone → n-propanol → methanol → pyridine → acetic acid (large)
Polar order of mixed solvents
Benzene: chloroform (1 + 1) → cyclohexane: ethyl acetate (8 + 2) → chloroform: acetone (95 + 5) → benzene: acetone (9 + 1) → benzene: ethyl acetate (8 + 2) → chloroform: ether (9 + 1) → benzene: methanol (95 + 5) → benzene: ether (6 + 4) → cyclohexane: ethyl acetate (1 + 1) → chloroform: ether (8 + 2) → chloroform: methanol (99 + 1) → benzene: methanol (9 + 1) → chloroform: acetone (85 + 15) → benzene: ether (4 + 6) → benzene: ethyl acetate (1 + 1) → chloroform: methanol (95 + 5) → chloroform: acetone (7 + 3) → benzene: ethyl acetate (3 + 7) → benzene: ether (1 + 9) → ether: methanol (99 + 1) → ethyl acetate: methanol (99 + 1) → benzene: acetone (1 + 1) → chloroform: methanol (9 + 1)
Note: benzene: methanol (95 + 5) means that 95 volumes of benzene are mixed with 5 volumes of methanol to form a mixed solvent
Common mixed solvents
Ethyl acetate / hexane: common concentration: 0 ~ 30%. However, it is sometimes difficult to completely remove the solvent on the rotary evaporator.
Ether / pentane system: it is commonly used when the concentration is 0 ~ 40%. It is very easy to remove on the rotary evaporator.
Ethanol / hexane or pentane: 5 ~ 30% is suitable for strong polar compounds.
Dichloromethane / hexane or pentane: 5 ~ 30%, which can be considered when other mixed solvents fail.
Comparison of functional group polarity
Alkanes (- CH3, – CH2 -) < olefins (- CH = ch -) < ethers (- O-CH3, – o-ch2 -) < nitro compounds (- NO2) < dimethylamine (ch3-n-ch3) < lipids (- coor) < ketones (- co -) < aldehydes (- CHO) < mercaptans (- SH) < amines (- NH2) < amides (- nhco-ch3) < alcohols (- OH) < phenols (- ar-oh) ＜ carboxylic acids (- COOH)
Common mobile phase polarity
Petroleum ether ＜ gasoline ＜ heptane ＜ hexane ＜ carbon disulfide ＜ xylene ＜ toluene ＜ chloropropane ＜ benzene ＜ bromoethane ＜ brominated benzene ＜ dichloroethane (DCM) < chloroform ＜ isopropyl ether ＜ nitromethane ＜ butyl acetate ＜ ether ＜ ethyl acetate ＜ n-pentane ＜ n-butanol ＜ phenol ＜ methylethanol ＜ TERT butanol ＜ tetrahydrofuran ＜ dioxane ＜ acetone ＜ ethanol ＜ acetonitrile ＜ methanol ＜ nitrogen dimethylformamide (DMF) ＜ water
Indicates the polarity of an organic solvent, which is related to its physicochemical properties, such as dielectric constant, dipole moment or refractive index. This representation regards all solvents as continuous acting media rather than discontinuous unity composed of various molecules, and does not take into account the special interaction between solvents and solutes.
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Under the environmental protection test, pentane is regarded as the best solution for cold storage panel?
On the aspect of environmental protection materials, the guidance catalogue of national industrial structure adjustment in 2011 clearly pointed out that the production and application of rigid polyurethane foam instead of HCFCs -141b (HCFC-141b) should be encouraged.
In 2014, HCFC-141b, the main foaming material of polyurethane, was granted a quota license for the first time. At the same time, the Ministry of environmental protection has also started the elimination of fluorine-containing foaming agents.
Then, the new regulations were issued. From January 1, 2019, except for the cold storage board industry, other ozone depleting industries could not use 141b, and the product was reduced by 30% per year in the cold storage board industry.
Professionals in the chemical industry pointed out that “using cyclopentane instead of HCFC-141b as foaming agent has undoubtedly become a mainstream scheme, and we expect 141b to be eliminated in less than three years.”
Similarly, many manufacturers use n-pentane as polyurethane foaming agent, which makes the foaming more uniform and the process more advantageous. Moreover, pentane has high safety requirements, and few enterprises can pass the safety assessment. These manufacturers spent 2 or 3 million on pentane technology reserve and based on environmental protection. With the support of the government, they passed safety assessment and environmental protection and based on environmental protection.
Experts in the field of foam blowing agents, David Zhang, Sales Manager of Junyuan Petroleum Group, also agreed: “at present, the best alternative is Pentane. Pentane must transform the foaming equipment, including foaming machine (gun head) and foaming fixture (heating system) The transformation of, intermediate tank, pre mixing system and storage tank needs to increase the ventilation and anti-static devices in the workshop, and the plant must use uninterruptible power supply, which will increase the burden of enterprises. ”
On the aspect of environmental protection materials, the guidance catalogue of national industrial structure adjustment in 2011 clearly pointed out that the production and application of rigid polyurethane foam instead of HCFCs -141b (HCFC-141b) should be encouraged.
In 2014, HCFC-141b, the main foaming material of polyurethane, was granted a quota license for the first time. At the same time, the Ministry of environmental protection has also started the elimination of fluorine-containing foaming agents.
Then, the new regulations were issued. From January 1, 2019, except for the cold storage board industry, other ozone depleting industries could not use 141b, and the product was reduced by 30% per year in the cold storage board industry.
Professionals in the chemical industry pointed out that “using cyclopentane instead of HCFC-141b as foaming agent has undoubtedly become a mainstream scheme, and we expect 141b to be eliminated in less than three years.”
Similarly, many manufacturers use n-pentane as polyurethane foaming agent, which makes the foaming more uniform and the process more advantageous. Moreover, pentane has high safety requirements, and few enterprises can pass the safety assessment. These manufacturers spent 2 or 3 million on pentane technology reserve and based on environmental protection. With the support of the government, they passed safety assessment and environmental protection and based on environmental protection.
Experts in the field of foam blowing agents, David Zhang, Sales Manager of Junyuan Petroleum Group, also agreed: “at present, the best alternative is Pentane. Pentane must transform the foaming equipment, including foaming machine (gun head) and foaming fixture (heating system) The transformation of, intermediate tank, pre mixing system and storage tank needs to increase the ventilation and anti-static devices in the workshop, and the plant must use uninterruptible power supply, which will increase the burden of enterprises. ”
n-Heptane produced by Junyuan Petroleum Group, with high purity and low aromatic content, is used in pharmaceutical, liquid crystal cleaning, coating and other industries.
Heptane is an organic compound with the chemical formula C7H16. It is colorless and volatile liquid. It is mainly used as a standard for the determination of octane number. It can also be used for the preparation of anesthetics, solvents, raw materials for organic synthesis and experimental reagents.
Pharmaceutical Grade n-Heptane: content > 99%, UN No.: 1206, with colorless, tasteless and non-toxic environmental protection characteristics. Product Applications: This product is mainly used for pesticide intermediates, pharmaceutical intermediates, fine chemicals, etc. it can replace toluene and improve the purity of intermediate products.
Junyuan Petroleum Group is a professional solvent manufacturer with an annual production capacity of 800,000 tons. It is a leading enterprise specializing in the supply of Heptane, n-Heptane, n-Pentane, Isopentane, Cyclopentane, n-Hexane, Blowing Agent, n-Octane, Isohexane, Sodium Methoxide and solvent oil in the Chinese market. In 2022, the market value of n-heptane (CAS 142-82-5) is US $956 million, which is expected to reach US $1137 million by 2024, with a CAGR of 1.18% during the forecast period.
24-JAN-22 There was no change in the price of pentane, hexane and heptane products today. Overnight market data source: US crude oil and refined oil inventories increased on the exchange, US stocks fell, traders took profits, and international oil prices fell slightly. NYMEX crude oil futures fell by US $0.41 per barrel or 0.48% to 85.14 in the 03 month contract; Ice oil distribution futures 03 contract 87.89.
[Focus Today] domestic EPS export volume hit a new high in December
According to customs statistics, in December 2021, China’s #EPS import volume was 2,389.57 tons, with a month on month decrease of 4.10% and a year-on-year decrease of 26.42%. The export volume was 21,913.14 tons, with a month on month increase of 65.75% and a year-on-year increase of 66.85%. In December, the domestic EPS export volume reached a new high in recent two years.
According to customs statistics, in December 2021, China’s EPS import volume was 2,389.57 tons, and the cumulative import volume was 29,786.803 tons. The import volume decreased by 4.10% month on month, 26.42% year-on-year, and 20.28% year-on-year.
According to customs statistics, in December 2021, China’s EPS export volume was 21,913.14 tons, and the cumulative export volume was 146,905.878 tons. The export volume increased by 65.75% month on month, 66.85% year-on-year, and the cumulative export volume decreased by 19.49% compared with the same period last year.
According to customs statistics, China’s EPS export volume in December 2021 was 21,913.14 tons, including about 6,286.5 tons in Vietnam, accounting for 28.69%, about 1907.5 tons in South Korea, accounting for 8.70%, about 1,683 tons in Chile, accounting for 7.68%, about 1360 tons in Australia, accounting for 6.21%, and about 1,258 tons in Ukraine, accounting for 5.74%.
According to customs statistics, in December 2021, China’s EPS export volume was 21,913.14 tons, general trade was about 11,462.002 tons, accounting for 52.31%, incoming processing trade was about 10,422.5 tons, accounting for 47.56%, others were about 26.685 tons, accounting for 0.12%, and inbound and outbound goods in bonded supervision places were about 1.95 tons, accounting for 0.01%.
23-JAN-22: There is no change in product price today. The prices of Pentane, Hexane and Heptane products continued to remain stable. With the end of this week and the arrival of the Chinese new year, the operating rate of many manufacturers continues to decline. At present, the inventory of various manufacturers is relatively low. If customers need to increase orders, please prepare in advance.
In terms of shipping,
the increasing sea freight has soared 12 times, or set a record!
The shipping company made a huge profit! Global shipping profits may soar 5 times!! In the past year, the global shipping market continued to be hot, international ports were congested, containers were hard to find, and shipping prices continued to soar. For a long time, shipping has been an important part of the international trade and transportation market with its low price However, since the outbreak of the epidemic, the global shipping cost has opened a crazy price increase mode.
22-JAN-22, There was no change in the price of Pentane, Hexane and Heptane series products today. It’s just a kind reminder that the Chinese New Year holiday is coming. Customers who need to confirm orders please make arrangements in advance.
Spring Festival (Chinese New Year)
The State Council released the official China public holiday 2022 schedule through its Circular of the General Office of the State Council on the Arrangement of Public Holidays in 2022. In 2022, Spring Festival falls between January 31 and February 6. Saturday, January 29 and Sunday, January 30, are designated as official workdays to partially offset the seven days off for Spring Festival.
- January 31 to February 6, 2022 (seven days in total; Monday to Sunday)
- Adjusted working days: January 29, 2022 (Saturday) and January 30, 2022 (Sunday)
21-JAN-22 n-Heptane price rose 2.44% today. n-Heptane is mainly used as a standard and solvent for octane number determination, as well as for organic synthesis and the preparation of experimental #reagents. n-Heptane is one of the widely used #hydrocarbon solvents in industry. It is used as extraction solvent of animal and vegetable oils, fast drying rubber adhesive and rubber #solvent. It is also used in the manufacture of cosmetics and as a solvent for cleaning coatings, paints, quick drying inks and printing machine parts. Industrial grade n-Heptane is mostly prepared from petroleum fraction by separation, with low purity.