Refinery Additives Market to Reach USD 5,193.5 Million by 2033 as Crude Quality, Not Volume, Sets the Bill

24 October 2026 — The global refinery additives market will grow at 3.52 per cent a year to 2033 in a business whose underlying crude throughput is almost static, according to new analysis from Pheonix Research. The firm sizes the market at USD 3,939.2 million in 2025, rising to USD 5,193.5 million in 2033, against additive volume growth of just 1.29 per cent a year — from 1,515.1 thousand tonnes to 1,678.4 thousand tonnes.

The reason for the divergence is crude quality, not crude demand. Global refinery throughput is 83.5 million barrels a day in 2025 and reaches 84.5 million by 2033. Over the same period the additive bill grows nearly three times faster than the tonnage that carries it, because the mix of the barrel is shifting towards the grades that consume chemistry.

A quarter of the barrels, 45.5 per cent of the value

Pheonix Research segments the market by crude class. Heavy sour crude is 25 per cent of global barrels in 2025 and 45.5 per cent of market value, at USD 0.235 a barrel of additive spend against USD 0.055 for light sweet — a ratio of 4.3 to 1. By 2033 heavy sour is 28 per cent of barrels and 48.4 per cent of value, and the ratio widens to 5.1 to 1 nominal. Light sweet is the only class losing share on both counts.

Medium sour crude, at 45 per cent of barrels, carries 41.8 per cent of value at USD 0.120 a barrel and grows at 3.42 per cent.

The bill is funded out of the discount

The economics behind those rates are what make the market more exposed to a price spread than to a demand forecast. A high-acid crude such as Alba, at a total acid number of 1.4, has carried a 54 to 64 cent a barrel discount against Brent, and a 30 to 50 cent net advantage after corrosion mitigation. Set the 23.5 cent heavy sour additive bill against that discount and the chemistry consumes 37 to 43 per cent of it, leaving the remainder as the refiner’s compensation for running a difficult slate.

“A refiner does not buy desalting chemistry because it appears in a chemicals budget,” the analysis states. “It buys it because the alternative is unplanned downtime, and it can afford to because the barrel was bought cheap. Compress the spread and the additive rate does not have to fall — but the reason to run the barrel does.”

Every defect-reading chemistry family outgrows the largest one

By chemistry, blend-pool fuel additives are the largest family at USD 906.0 million, or 23.0 per cent of the market in 2025, and the slowest growing at 1.40 per cent — because they are dosed per barrel of finished product, and finished product volumes are flat to falling. Demulsifiers and desalting lead growth at 4.68 per cent (USD 630.3 million to USD 908.9 million), followed by H2S, mercaptan and caustic chemistry at 4.56 per cent, corrosion inhibitors and amines at 4.48 per cent and antifoulants and antifoams at 4.26 per cent. FCC and catalyst additives, at USD 827.2 million, grow at 2.89 per cent.

The slate is moving in the harder direction on three fronts at once: OPEC+ has been unwinding production cuts since May 2025 with returning barrels weighted towards medium and heavy sour grades; Canadian crude and condensate output is forecast at a record 4.85 million barrels a day in 2026, with two-thirds of Trans Mountain’s exports going to Asia-Pacific destinations in January to November 2025; and Arab Heavy shipments are down 280,000 barrels a day to roughly 560,000. Regulatory tightening compounds the effect — the Mediterranean sulphur emission control area, in force at 0.10 per cent since 1 May 2025, is the fifth such area and covers a sea carrying around 20 per cent of seaborne trade.

About the report

Global Refinery Additives Market Size, Share & Forecast 2026–2033: A Quarter of the Barrels Carry 45 Per Cent of the Bill covers market sizing and forecast to 2033, segmentation by crude class and by six chemistry families, cost-per-barrel analysis anchored to refinery operating data, the discount economics that fund additive spend, competitive landscape, value chain, investment activity, technology, regulatory exposure and market risk. Further detail: pheonixresearch.com/oil-gas/crude-oil/market-report/refinery-additives-market

About Pheonix Research

Pheonix Research produces market intelligence built on primary operational evidence rather than on consensus restatement. Its coverage maps markets to the physical and commercial mechanisms that actually set their size — in this case, the quality of the crude a refinery runs rather than the volume of it.

Media contact: Pheonix Research — pheonixresearch.com/contact