

Octane blending
Overview
Demand for high octane components vary throughout the year depending on seasonality, premium gasoline market share, and refinery performance. Stricter gasoline standards also contribute to demand for high octane components.
Among the list of high-octane components are reformate, alkylate, MTBE, ETBE, toluene, xylenes, ethyl benzene, and others. Some of these components primarily see demand from the chemical market but could be diverted to the gasoline pool if there are returns in that segment.
Each blendstock has specific octane rating and rvp content that determines its value in the gasoline pool. Gasoline blenders will look at market prices for each of the octanes and see how it relates to the value in the gasoline pool. In the summer of 2023, high volumes of ethylbenzene were diverted to the gasoline instead of the production of styrene, as styrene prices fell below ethylbenzene blend value.
MTBE is a high-octane component for gasoline blending, but only used in some countries. MTBE demand has been led by growth in Asia, Middle East, and Latin Markets. Other regions have focused on increased biofuel usage which includes ethanol and ETBE.
Argus’ experts will help you determine what trends to track and how to stay competitive in today’s ever-changing global markets.
Latest octane blending news
Browse the latest market moving news on the global octane blending industry.
Repsol to start up 15,000 t/yr UHMWPE plant in 2026
Repsol to start up 15,000 t/yr UHMWPE plant in 2026
Madrid, 25 July (Argus) — Spanish integrated energy firm Repsol plans to bring a 15,000 t/yr ultra-high molecular weight polyethylene (UHMWPE) plant online at its Puertollano complex in Spain in 2026. The plant, originally scheduled for 2024, will use technology licensed from Dutch producer DSM. It is expected to support earnings growth in Repsol's olefins-focused petrochemicals business. Earnings before interest, tax, depreciation and amortisation (Ebitda) from the chemicals division are also set to rise from the second quarter of 2026, as output ramps up at Repsol's upgraded Sines complex in Portugal. "New margins are going to come from Sines," chief executive Josu Jon Imaz said. He added that the revamped site could contribute €80mn–85mn to second-quarter Ebitda in a low-margin scenario, and around €135mn under average market conditions. His comments suggest a timeline for restarting the Sines site's 410,000 t/yr ethylene cracker, which has been offline since 2023, alongside the commissioning of new 300,000 t/yr linear polyethylene (PEL) and polypropylene (PP) units. Repsol does not break out chemical earnings in detail, but said operating profit in the division fell by around €30mn in April–June from a year earlier. A widespread power outage on 28 April forced a full shutdown of all three of its chemical plants in Spain and Portugal, limiting its ability to benefit from improved margins. The company's petrochemical margin indicator — a weighted average of product spreads — rose to €329/t in the second quarter, up from €269/t a year earlier. Repsol estimates the blackout and staggered restarts cost it around €45mn. Polymer and monomer margins have improved so far in 2025, but the outlook remains challenging. "The crisis in the chemicals business is not over," Imaz said, citing flat demand and persistently high energy costs. He pointed to technical upgrades at Sines and the development of more specialised products — such as the UHMWPE line at Puertollano — as key to improving competitiveness and margins. By Jonathan Gleave Send comments and request more information at feedback@argusmedia.com Copyright © 2025. Argus Media group . All rights reserved.
New PE train absorbs Dow's last merchant ethylene
New PE train absorbs Dow's last merchant ethylene
Houston, 24 July (Argus) — The startup of Dow's new Poly-7 polyethylene (PE) train in Freeport, Texas, a month ago has absorbed Dow's last merchant ethylene, the company said in its second quarter earnings call. This has structurally tightened the US ethylene market, with spot prices rising by 25pc since the train's startup. "Since we've started up that train, we've seen spot ethylene (prices) improve," said chief operating officer Karen Carter. US spot ethylene at the Enterprise Products Partners' (EPC) cavern in Mont Belvieu, Texas, traded as high as 26¢/lb this week for July delivery. This was the highest EPC ethylene trade since early March. The demand for ethylene from the new 600,000 metric tonne (t/yr) PE train, which started up on 16 June , returns Dow to its traditional position of being balanced to slightly short ethylene on the US Gulf coast. That position had been reversed for the last eight years with the startup of Dow's 2mn t/yr TX-9 cracker in Freeport, Texas in July 2017 . Dow's length in the US ethylene market expanded more with its August 2017 merger with Dupont, which caused Dow to take ownership of Dupont's 1.6mn t/yr ethane cracker in Orange, Texas. This unit was net long ethylene. The impact of Dow returning to a net short ethylene position goes beyond immediate spot pricing. The Poly-7 startup drove a 5pc quarter-on-quarter decline in net sales for its Packaging and Specialty Plastics division as the company sold less merchant ethylene than it did in the first quarter. In exports, the US ethylene export arbitrage to Europe closed over the last month with the rise in spot prices. It is likely that export arbitrage will be open less frequently going forward as less spot ethylene is available for export. Overall, the startup, which takes 600,000 t/yr of ethylene out of the spot market, will make the US market more price sensitive to periods of distressed buying, like when a major cracker shuts down unexpectedly and needs the spot market to cover its position. The company plans to use the new train which has swing production for up to either 600,000 t/yr high density polyethylene (HDPE) or linear low density polyethylene (LLDPE) for the export of higher-value functional polymers. This will include applications like health, hygiene, food and other specialty packaging. The company expects these high value plastics to expands margins for its Packaging and Specialty plastics segment in the third quarter. By Michael Camarda Send comments and request more information at feedback@argusmedia.com Copyright © 2025. Argus Media group . All rights reserved.
Dow to close German cracker, other assets by 4Q 2027
Dow to close German cracker, other assets by 4Q 2027
London, 7 July (Argus) — US chemicals firm Dow said today it will permanently close its ethylene cracker in Bohlen, Germany, and chlor-alkali and vinyl assets in nearby Schkopau, in the fourth quarter of 2027. It will close its siloxanes plant in Barry, UK, in mid-2026. "The shutdown of upstream assets in Europe will right-size regional capacity, reduce merchant sale exposure, and remove higher-cost, energy-intensive portions of Dow's portfolio in the region," the company said. The assets were included in Dow's strategic review in April. It said at the time the sites were being considered for idling or closure. The Bohlen cracker has a nameplate capacity of 540,000 t/yr of ethylene and a propylene capacity of 285,000 t/yr. It also has a butadiene extraction unit with a nameplate capacity of 105,000 t/yr. At Schkopau, Dow has a membrane cell chlor-alkali capacity of 250,000 t/yr and 740,000 t/yr of ethylene dichloride capacity. The site previously had around 330,000 t/yr of capacity for chloride monomer (VCM) production, with two lines operating at the site, but Dow closed the larger of the two lines to reduce capacity to roughly 110,000 t/yr earlier in 2024. Dow's polyethylene assets in Schkopau — a 210,000 t/yr LLD-HDPE unit and 108,000 t/yr LDPE unit — were not part of the review and will continue to operate. Dow said closure of the upstream assets would "improve our ability to supply profitable derivative demand and optimise margins". The PE units can utilise an ethylene pipeline that runs between them and Dow's storage and import infrastructure in Stade, Germany. The extended lead-time of the closures will allow Dow to wind down existing contracts and give customers time to attempt to source alternative material. Customers include the former Dow polypropylene plant at Schkopau, which it sold to Brazil-based petrochemical company Braskem in 2011 and that receives feedstock propylene from the Boehlen cracker. Send comments and request more information at feedback@argusmedia.com Copyright © 2025. Argus Media group . All rights reserved.
LyondellBasell agrees sale of select European assets
LyondellBasell agrees sale of select European assets
London, 17 June (Argus) — Petrochemicals firm LyondellBasell is in exclusive negotiations with Munich-based industrial investment firm Aequita regarding the sale of four olefin and polyolefin assets in Europe. The deal includes its integrated cracker and polyolefin assets in Berre, France, and Muenchsmuenster, Germany, as well as stand-alone polypropylene sites in Carrington, UK, and Tarragona, Spain. The deal is contingent on local council approval and is expected to close in the first half of 2026, LyondellBasell says. The sites were part of six put under strategic review in May 2024. The assets "represent a scaled olefins and polyolefins platform strategically located in proximity to a long-standing customer base", the firms say. Send comments and request more information at feedback@argusmedia.com Copyright © 2025. Argus Media group . All rights reserved.
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