Morning Market Alert for the C5 Industry Chain

I. Key Points

1. The U.S. and Iran indicated that negotiations are ongoing, easing market concerns; however, hurricanes continued to suppress U.S. crude oil production, driving international prices higher. NYMEX WTI futures (November contract) rose by $0.36/bbl to $91.85/bbl (+0.39% WoW); ICE Brent futures (December contract) rose by $0.44/bbl to $104.72/bbl (+0.42% WoW). China INE crude oil futures (November 2026 contract) rose by 3.9 yuan/bbl to 741.3 yuan/bbl during the day session, but fell by 1.5 yuan/bbl to 739.8 yuan/bbl in the night session.
2. As of October 9, Japanese naphtha closed at $971.5/ton, down $0.64/ton from the previous trading day. Singapore naphtha closed at $102.43/barrel, up $0.09/barrel from the previous trading day.
3. Yesterday, domestic pyrolysis C5 prices from major suppliers remained stable. Shandong mixed C5 prices saw a slight increase with improved shipments. Private enterprises' pyrolysis C5 prices today were acceptable, showing a slight upward trend compared to yesterday. In terms of deep processing, piperylene monomer inventories remain low, supporting firm prices. Resin prices are currently stable, with moderate buying interest.
4. Yesterday, the domestic pyrolysis C5 residual liquid market executed contracts at stable prices. Mixed C5, a homogeneous product, saw price increases, leading to divergent market sentiment and some chasing-high transactions. With no clear market drivers, the pyrolysis C5 residual liquid market is expected to fluctuate within a narrow range.
5. Yesterday, the domestic piperylene market trended upward. Downstream customers returned after the holiday and restocked based on rigid demand. Tight supply supported the market, shifting the transaction center higher. Mainstream ex-factory prices ranged from 9,200 to 10,300 yuan/ton.
6. Yesterday, domestic isoprene prices rose. Feedstock private pyrolysis C5 costs increased, and tight product supply supported sellers in maintaining firm prices. Downstream buyers engaged in passive high-price chasing to meet rigid demand. Mainstream bid prices in East China ranged from 14,000 to 14,600 yuan/ton.
7. Yesterday, dicyclopentadiene (DCPD) remained firm, trading between 9,100 and 9,300 yuan/ton. Low-end offers were stable, while high-end offers involved negotiation. Strong crude oil and bulk commodity markets, combined with downstream rigid procurement, shifted the transaction center higher. Firm feedstock costs and limited DCPD supply provided clear support factors.
8. Yesterday, mainstream prices for road-marking paint C5 petroleum resin ranged from 9,750 to 11,000 yuan/ton. Due to relatively high resin prices, downstream buyers maintained rigid-demand purchasing. Manufacturers faced significant cost pressure and showed little willingness to offer discounts, keeping negotiated prices stable.
9. Yesterday, mainstream prices for piperylene-based adhesive C5 petroleum resin ranged from 11,800 to 13,600 yuan/ton, while de-cyclicized adhesive C5 petroleum resin ranged from 10,500 to 11,200 yuan/ton. High prices may amplify certain risks for downstream users. Market transactions remained steady as buyers focused primarily on rigid demand, with prices consolidating at high levels.

Core Logic: Pyrolysis C5 consolidation, Isoprene rise, Piperylene rise, DCPD rise, C5 petroleum resin stable with slight upward push.

II. Price Table

Table 1: Domestic Pyrolysis C5 Industry Chain Summary (Unit: Yuan/Ton)

III. Market Outlook

Domestic pyrolysis C5 prices from major suppliers are expected to remain stable. Prices from private enterprises are likely to warm up slightly, with some approaching parity with major suppliers. Major supplier prices will temporarily hold steady. Mixed C5 prices are expected to remain acceptable. Regarding deep processing, piperylene monomer prices are expected to stay firm, while resin purchasing enthusiasm remains moderate.

The pyrolysis C5 residual liquid market is expected to fluctuate within a narrow range. Yesterday, gasoline transaction centers shifted higher, but actual trading weakened. The Shandong mixed C5 market saw average sales activity, with mainstream prices around 7,450 yuan/ton. With no clear market drivers, Chempricehub Information predicts the pyrolysis C5 residual liquid market will remain in a narrow range recently.

Overnight crude oil prices rose, but the impact on the market was limited. Yesterday, Shandong local refineries raised gasoline prices, but shipment sentiment weakened. Market sentiment regarding mixed C5 was divided. Chempricehub expects the mixed C5 market to fluctuate within a narrow range today.

Isoprene is expected to consolidate at high levels. The overall tight supply situation for isoprene continues, and factories face no inventory pressure. However, with no crude oil guidance today, prices are predicted to remain consolidated at highs.

Piperylene is expected to consolidate at high levels. Factories currently have no inventory pressure, providing support for firm pricing. However, downstream rigid demand is limited, and many buyers are observing cautiously. Therefore, piperylene prices are expected to remain consolidated at highs.

Dicyclopentadiene (DCPD) is expected to remain firm at high levels. Favorable external sentiment, combined with post-holiday rigid demand support and limited spot availability, provides market support. The market is likely to maintain its recent trend of operating at high levels.

For road-marking paint C5 petroleum resin, terminal construction volumes in northern regions may see a slight decrease. In the short term, manufacturer spot inventories are scarce, leading to stagnant market transactions and stable negotiated prices. For adhesive C5 petroleum resin, supply is gradually recovering, and transaction volumes remain high. Meanwhile, international crude oil prices are consolidating at highs, providing strong cost-side support and firm negotiated prices.

IV. Data Calendar

Table 2: Domestic Pyrolysis C5 Industry Chain Data Overview (Unit: 10,000 Tons)