This week, the price of isooctanol first fell and then rose

According to the Commodity Market Analysis System of Shengyi Society, as of June 6th, the price of isooctanol was 7550 yuan/ton, which first fell and then rose compared to the price of 7550 yuan/ton on June 1st, and the price has stabilized; The price of isooctanol has increased by 1.12% from 7466.67 yuan/ton on June 4th. In June, the price of isooctanol did not continue its upward trend from May and fell slightly. With downstream customers replenishing their inventory at low prices and the demand for isooctanol recovering, the price of isooctanol first fell and then rose.
Downstream plasticizer DOP prices first fell and then rose
According to the Commodity Market Analysis System of Shengyi Society, as of June 6th, the DOP price was 8267.50 yuan/ton, a decrease followed by an increase of 0.20% compared to the June 1st DOP price of 8250.83 yuan/ton; Compared to June 3rd, the DOP price of 8192.50 yuan/ton fluctuated and rose by 0.92%. The operating rate of plasticizer DOP enterprises has temporarily stabilized at a low level. After the Dragon Boat Festival, the demand for plasticizer has temporarily warmed up, the output of plasticizer has stabilized, the demand for isooctanol has temporarily warmed up, and the price of isooctanol first fell and then rose.
Future expectations
According to the data analyst of Shengyi Society’s octanol product, plasticizer companies have stable production, with a brief rebound in demand for plasticizers, stable output of plasticizer companies, and stable downstream demand for isooctanol. In the future, both supply and demand are weak, and it is expected that the price of isooctanol will first fall and then rise.

According to the Commodity Market Analysis System of Shengyi Society, the price trend of acetic acid in May fluctuated within a range. As of May 31st, the price was 2700 yuan/ton, which was the same as the acetic acid price of 2700 yuan/ton at the beginning of the month, with a maximum amplitude of 3.03% during the month.

As of the end of the month, the market price details of acetic acid in various regions of China in May are as follows:
Region /On May 1st /May 15th /May 30th
South China region /2625 yuan/ton /2525 yuan/ton /2550 yuan/ton
North China region /2625 yuan/ton /2520 yuan/ton /2540 yuan/ton
Shandong region /2640 yuan/ton /2550 yuan/ton /2570 yuan/ton
Jiangsu region /2500 yuan/ton /2400 yuan/ton /2490 yuan/ton
Zhejiang region /2700 yuan/ton /2600 yuan/ton /2700 yuan/ton
In the first half of May, the price of acetic acid fell weakly, mainly due to the high utilization rate of on-site production capacity and sufficient supply of market goods. However, downstream stocking was not active, resulting in significant pressure on enterprise shipments and a continuous shift in the focus of acetic acid transactions; In the second half of the month, prices first rose and then fell. News of equipment maintenance in the early stage was released one after another, and the mentality of the industry was optimistic. Acetic acid prices rose, while enterprise shipments increased, inventory pressure weakened, and the market trend continued to rise. Due to the obvious intention of enterprises to rise, downstream sentiment towards high prices gradually increased, and the enthusiasm for entering the market weakened. At the end of the month, some areas did not sell their products, and prices fell.
The methanol market on the raw material side is weak and declining. As of May 31st, the average price in the domestic market was 2250 yuan/ton, a decrease of 7.79% compared to the beginning of the month price of 2440 yuan/ton. The domestic methanol supply is high, and there is an expectation of incremental growth in the import market. The lack of confidence in the spot market has suppressed prices. Although downstream external procurement and equipment start-up have provided some support to the market, overall demand is weak, and the domestic methanol market is under pressure and declining.
Market forecast: Business Society analysts believe that the current acetic acid market is mainly stable, with poor shipments from enterprises, weak mentality of industry players, low enthusiasm for downstream market entry, limited market trading, and an increase in capacity utilization in the future. On site supply will continue to exceed demand, and it is expected that the acetic acid market will operate weakly in June. Specific attention should be paid to downstream follow-up situations.

According to the Commodity Market Analysis System of Shengyi Society, the domestic ethanol market saw a unilateral upward trend in May. From May 1st to 30th, the average price of domestic ethanol producers increased from 5233 yuan/ton to 5438 yuan/ton, with a price fluctuation of 3.93% and a year-on-year decrease of 8.86%.
In the first half of the month, some enterprises in certain regions continued to conduct inspections on their equipment, resulting in limited ethanol supply and strong prices of raw material corn, leading to significant cost pressures. As a result, enterprises showed a clear willingness to raise prices.

In mid month, the ethanol market continued to rise, with some regions facing significant cost pressures for enterprises. Orders were shipped, production was not high, inventory pressure was not significant, and there was a clear intention to increase prices. However, new orders were limited in transactions.
At the end of the month, the domestic ethanol market prices stabilized at a high level. Enterprises in the Northeast region continue to undergo rotation inspections, with low production rates and a clear willingness to raise prices. In the short term, without inventory pressure, prices may remain stable. The transaction situation in Henan region is still acceptable, with prices maintaining a high level of consolidation.
On the cost side, in the first half of the month, corn prices remained relatively firm, and the purchase prices for deep processing have also increased. Prices in production areas have continued to rise recently, and traders’ shipping mentality has slightly changed. Overall, there is not much corn surplus in the production area, and the quotation is firm. The price of corn fluctuated in the second half of the month. The arrival volume of deep processed corn in Shandong and Hebei is still acceptable, and some enterprises have seen a narrow reduction in corn prices. Henan’s deep processing enterprises have generally received goods and prices have increased. Before the wheat harvest, grassroots grain points were able to monetize their shipments, but overall supply pressure was not significant. The cost of ethanol is influenced by favorable factors.
There are unlikely to be significant favorable factors in the supply of ethanol.
On the demand side, from the demand side, the demand for Baijiu fluctuates little, and the downstream stock of chemical industry needs to be replenished. The short-term demand for ethanol has a moderate impact.
Future forecast: Limited supply, partial orders shipped, downstream stocking nearing completion. The ethanol analyst from Shengyi Society predicts that the domestic ethanol market will remain strong and stable in the short term.

In May 2025, the upstream cost support of nylon filament was insufficient, and the purchasing power of downstream enterprises was poor, resulting in an overall increase in inventory levels in the industry. There was a lack of positive news to boost the market, leading to a weak decline in nylon filament market prices.

Price trend of nylon filament in May
According to the Commodity Market Analysis System of Shengyi Society, the monthly average price of nylon filament will continue to decline in May 2025. As of May 30, 2025, DTY (premium product) of nylon filament in Jiangsu region; 70D/24F) quoted 14760 yuan/ton, a decrease of 280 yuan/ton from the previous month, a monthly decrease of 1.86%; Nylon POY (premium product; The quotation for 86D/24F is 12300 yuan/ton, a decrease of 200 yuan/ton from the previous month, with a monthly decrease of 1.60%; The price of nylon FDY (premium: 40D/12F) is reported at 15400 yuan/ton, a decrease of 250 yuan/ton or 1.60% compared to the previous month.
Since the beginning of the month, the weekly closing price of Sinopec’s caprolactam has been continuously lowered, and the market for high-speed spinning of nylon PA6 chips has been under pressure and downward, with weak cost support; The demand in the terminal market is showing signs of fatigue, downstream yarn factories are experiencing poor shipments, and their enthusiasm for raw material procurement has declined, resulting in a significant increase in inventory in the nylon filament market. Under multiple negative factors, the price of nylon filament market continues to decline.
Until the end of the month, the market price of nylon filament rebounded slightly. The strong upward trend in crude oil and pure benzene market prices has driven the continuous rise in the spot market of caprolactam and the market for nylon PA6 chips. Subsequently, the weekly closing price of caprolactam by Sinopec has been raised, and cost support has been strengthened; Individual downstream factories stocked up on dips, resulting in a slight increase in demand. Amidst mixed market news, the nylon filament market price saw a narrow rise before consolidating and operating.
As of the end of the month, there has been no significant improvement in terminal demand, and the demand side has constrained the raw material market from bottom to top. The price of nylon filament market has entered a downward channel.
The raw material market continues to weaken and decline
In terms of cost, the weekly settlement price of Sinopec Caprolactam first fell and then rose, with a significant decrease in monthly settlement price. The market for high-speed spinning of nylon PA6 slices slightly fell, and the price center of the raw material market shifted downwards, with weak support on the cost side. As of May 30, 2025, the benchmark price of caprolactam in Shengyi Society was 9190 yuan/ton, with a monthly decline of 0.77%. Nylon PA6 experienced a monthly decline of 3.04%.
Supply and demand: In May, there was little fluctuation in the overall supply of nylon filament market. Starting from the May Day holiday, some nylon filament manufacturers have reduced their load operation or stopped for vacation, resulting in a decrease in on-site supply. By mid month, the early parking inspection devices in Zhejiang have gradually resumed, and with the continuous release of new production capacity in the industry, the supply has gradually increased. The demand in the terminal market has not improved, foreign trade orders are insufficient, domestic demand is limited, downstream manufacturers’ finished product inventory continues to accumulate, and the demand for nylon filament market is gradually decreasing, making it difficult to find favorable support on the demand side.

Future forecast
Cost aspect: In terms of caprolactam, pure benzene is expected to be weak, and the supply of caprolactam may recover next month. Slice manufacturers have low enthusiasm for purchasing caprolactam, and it is expected that the caprolactam market will continue to decline next month; In terms of PA6 slicing, cost support is limited, and the supply level of PA6 slicing market may continue to improve. Downstream market demand is weak, and it is expected that the PA6 slicing market price will decline next month. Therefore, it is expected that the market price trend of nylon filament raw materials will be poor next month, and the cost support will be insufficient.
Supply and demand: June is a transitional period from the market to the traditional off-season, coupled with the lack of signs of improvement in terminal market demand and low purchasing enthusiasm in downstream markets. Therefore, it is expected that the demand for nylon filament market may decrease next month. If there is no significant improvement in demand, under the pressure of large inventory, some nylon filament manufacturers may have the possibility of reducing production capacity, while the industry continues to release new production capacity. Therefore, it is expected that the supply of nylon filament market will decrease next month.
Overall, both the upstream raw material caprolactam spot market and the nylon PA6 chip market are likely to decline, with a lack of cost support and difficulty in improving downstream market demand. The demand side is dragging down the market trend, and under the dual negative factors, analysts from Shengyi Society predict that the nylon filament market price will continue to be weak next month, with a decline of 100-300 yuan/ton.

According to the Commodity Market Analysis System of Shengyi Society, the domestic aggregated MDI market first rose and then fell in May, with an overall increase. From May 1st to 29th, the domestic market price of aggregated MDI increased from 15316 yuan/ton to 16283 yuan/ton, with a monthly price increase of 6.31% and a year-on-year price decrease of 6.77%.

In mid to early May, export orders were delivered in a concentrated manner, and middlemen showed a clear willingness to raise prices. Low end quotations stopped falling and rose, and Ningbo units were supplied in limited quantities. Shanghai units have maintenance plans, and supply is expected to tighten. In the middle of the month, there will be an increase in maintenance companies and a slowdown in the filling speed of goods sources. The latest tariff policy has been introduced, which is favorable for the bulk commodity market. The trading atmosphere inside the venue has heated up. Low price reluctance to sell, the price of aggregated MDI continues to rise.
At the end of the month, the price of aggregated MDI rose to a high level, and intermediaries were actively selling goods. Downstream resistance to high priced sources was evident, and prices began to show slight looseness. The slight downward trend continued until the end of the month.
On the supply side, the 350000 ton annual production unit of Shanghai Huntsman will be shut down for maintenance in mid May, with a maintenance cycle of about three weeks. BASF’s 250000 ton plant in Shanghai will undergo maintenance in mid May, lasting approximately three weeks. Wanhua Fujian plant started shutdown maintenance on June 5th, with a duration of about 45 days.
On the cost side, the raw material pure benzene: In May, the pure benzene market fluctuated greatly, and the overall price increased compared to the beginning of the month. Supported by news of the adjustment of tariffs between China and the United States, the mid month market saw a wide rise in pure benzene prices. Subsequently, all the positive news dissipated, and the market returned to supply-demand imbalance, with prices falling weakly. Raw material aniline: The aniline market fluctuated and fell in May. On May 1st, the market price of aniline was 7532 yuan/ton, and on May 29th it was 7225 yuan/ton, a decrease of 4.08% during the month.
On the demand side, downstream urgent procurement, entering the market at low prices. In May, China and the United States reached an agreement on tariff policies, and the export market improved.
In the future market forecast, the current MDI market has a clear willingness for suppliers to raise prices, while the demand side maintains rigid procurement, resulting in a slight decrease in transaction prices. It is expected that the aggregated MDI market will maintain a slight downward trend in the short term.

Product Name: Pure Benzene

Latest price: The average market price on May 28th was 5792 yuan/ton, a decrease of 0.63% from the previous trading day.
Analysis: The price of pure benzene in the domestic market has fallen. The decline in the styrene futures market has affected confidence in the pure benzene market. Sinopec’s refineries in East and South China have lowered the price of pure benzene by 150 yuan to 5950 yuan/ton, which will be implemented on May 27th. Shandong’s local refining enterprises have slightly lowered their quotations, and downstream demand for gas is slightly average, resulting in light transactions. Overall, it is necessary to pay attention to the long-term accumulation of terminal inventory. It is expected that pure benzene will mainly fluctuate and consolidate in the short term, and actual transactions will be discussed on a case by case basis.

1、 Price trend

According to the commodity analysis system of Shengyi Society, the price of light soda ash decreased on May 27th, with a market average price of 1386 yuan/ton, a decrease of 0.57% compared to the previous trading day’s price of 1394 yuan/ton, and a decrease of 1.56% compared to the beginning of the month.
2、 Market analysis
On May 27th, the soda ash market experienced a weak downward trend. On the demand side, there is limited transaction volume in the terminal market, and there is a need to follow up on market purchases. Prices in some areas of the downstream glass market have been lowered, resulting in weak support for soda ash; On the supply side, the operating rate of the soda ash market has increased, but the mentality of the industry is not good. At the same time, there is weak trading in the market, and the shipment of enterprises is average. The soda ash quotation is weakly lowered.
On the demand side: According to the commodity analysis system of Shengyi Society, glass prices remained stable on May 27th, with the market average price remaining unchanged at 14.40 yuan/square meter. The glass market equipment has not changed much, the supply of goods is stable, the downstream purchasing enthusiasm is not high, a small amount is followed up according to demand, the glass market is slow to clear inventory, and the glass price is weakly stable.
Future forecast: Currently, the operating rate of soda ash in China is not high, and there is no pressure on market supply. Enterprises mainly ship their products. The downstream glass market is average, and the demand for soda ash is limited. The maintenance of supplier equipment will support the price. It is expected that the soda ash market will operate steadily, depending on downstream market demand.

Recently, the domestic epoxy propane market prices have been running steadily. According to the monitoring system of Shengyi Society, as of May 23rd, the benchmark price of Shengyi Society’s epoxy propane was 7725 yuan/ton, an increase of 5.46% compared to early May.

Price influencing factors:
Raw material side: Recently, the raw material propylene market has remained stable. According to the market analysis system of Shengyi Society, as of May 23, the benchmark price of propylene in Shengyi Society was 6665.75 yuan/ton, an increase of 1.45% compared to the beginning of this month (6570.75 yuan/ton).
On the demand side: downstream demand for epoxy propane replenishment after the holiday, the market trading atmosphere is relatively cautious. Affected by tariff policies, downstream terminal markets have limited procurement of raw materials. Overall, the demand is facing limited support from the epoxy propane market, and the market may maintain a volatile and weak trend in the later stage.
Market forecast:
Business Society’s epoxy propane analyst believes that downstream epoxy propane urgently needs replenishment, cautious procurement, cold market trading atmosphere, and insufficient demand support. It is expected that the epoxy propane market will maintain a weak and volatile trend in the later stage, and more attention should be paid to changes in raw material prices and downstream supply and demand.

1、 Price trend

According to the commodity analysis system of Shengyi Society, the price of caustic soda has increased this week. The average market price at the beginning of the week was 851 yuan/ton, and the average market price over the weekend was 871 yuan/ton, with a price increase of 2.35% and a year-on-year increase of 9.97%. On May 22, the Business Social Chemical Index was 802 points, an increase of 1 point from yesterday, a decrease of 42.71% from the highest point of 1400 points during the cycle (2021-10-23), and an increase of 34.11% from the lowest point of 598 points on April 8, 2020. (Note: The cycle refers to the period from December 1, 2011 to present)
2、 Market analysis
According to the commodity analysis system of Shengyi Society, the price of caustic soda has been rising this week. The price of caustic soda in Shandong region is around 810-870 yuan/ton in the mainstream market of 32% ion-exchange membrane alkali. The price of caustic soda in Jiangsu region is stable, and the mainstream market price of 32% ion-exchange membrane alkali is around 900-980 yuan/ton. The price of caustic soda in Inner Mongolia region is temporarily stable, and the mainstream market price of 32% ion-exchange membrane alkali is around 2700-2800 yuan/ton (converted to 100%). The main downstream purchase price of caustic soda has been raised, and downstream demand has increased compared to before. Shandong liquid alkali is expected to maintain a high level of consolidation, and the overall inventory pressure of caustic soda is not significant.
Business analysts believe that the recent rise in caustic soda prices is driving the market trend, and the domestic downstream demand is still acceptable, supporting the firm operation of caustic soda prices. The comprehensive supply-demand game predicts that caustic soda will maintain a strong operating trend in the later stage, depending on downstream market demand.

According to the commodity analysis system of Shengyi Society, the hydrogen peroxide market has gradually improved since May. On May 1st, the average market price of hydrogen peroxide was 693 yuan/ton, and on May 19th, the average market price of hydrogen peroxide was 703 yuan/ton, with a price increase of 1.44%.

Positive support for hydrogen peroxide market oscillation and upward trend
Since May, there has been an increase in terminal demand in the printing and papermaking industries, with some hydrogen peroxide manufacturers shutting down for maintenance and supply tightening. This has been supported by positive factors, and hydrogen peroxide prices have gradually improved, mainly oscillating upwards. After the May Day holiday, the average price of hydrogen peroxide in the domestic market rose to around 700 yuan/ton, with a price increase of around 50 yuan/ton. After mid month, the hydrogen peroxide market continued to rise slightly, with increased market transactions and an overall upward trend. As of May 19th, the average market price of hydrogen peroxide was 703 yuan/ton, an increase of 1.44% from the beginning of the month.
Business Society’s hydrogen peroxide analyst believes that by the end of May, demand in the terminal printing and papermaking industry had improved, and the pressure on hydrogen peroxide supply had decreased, with the market continuing to operate at a high level in the future.