Acid oils and soapstock go to two markets in Europe. Biodiesel and HVO producers buy them as an advanced feedstock where the classification supports it; oleochemical manufacturers buy them as a raw material for fatty acids and derivatives. Neste names residues from vegetable oil processing among its top three waste and residue categories. The classification question decides which market you are in, and it is worth settling before anyone quotes.
- 1Collection or rendering
- 2Pretreatment
- 3Certified trade
- 4Producer: HVO, SAF or FAME
- 5Fuel in the tank
The value is created at step three: without the certification the same molecule is worth what tallow was worth twenty years ago.
The fuel market, where classification carries the value
Read this first: this is a market map built from public sources, not a client list. Naming a company here says nothing about whether we work with them, and we do not claim to represent any of them. It exists because "who actually buys this" is the question we are asked most often, and there is no honest public answer to it anywhere. Acid oils from vegetable oil refining are used as a biodiesel and hydrotreating feedstock across Europe. Neste states that wastes and residues from vegetable oils processing are among its top three waste and residue categories globally, alongside used cooking oil and animal fat waste. The European FAME producers take acid oils routinely.
What decides the value here is not the appearance of the material but where it sits under Annex IX, and the answer depends on the origin oil and the process it came from. That is a question to settle with evidence before you go to market, because two parcels that look identical can be worth very different amounts on the strength of their paperwork alone.
The oleochemical market, which buys on chemistry
Oleochemical manufacturers split acid oils into fatty acids and derivatives. KLK OLEO operates four companies and seven production sites in Europe; IOI Oleo is headquartered in Hamburg with production at Witten and Wittenberge. These buyers look at total fatty matter, the fatty acid profile, colour and impurities.
They do not need a sustainability chain, which makes this the natural home for material that cannot be certified or whose classification is contested. Total fatty matter in particular is the number a soap or fatty acid buyer works from, and it is worth having on your offer from the start.
There is a published reference for soapstock acid oil
Fastmarkets launched a soapstock acid oil assessment for the Amsterdam trading hub in 2025. As with POME, this changes how offers read: a seller quoting into a market that has a reference is expected to know it exists. We do not publish price assessments and we do not quote levels here.
Esterification, and what it changes
Acid oils are frequently esterified before sale, which changes the free fatty acid profile and therefore the buyer. Our esterified acid oils page covers what that process does to the product and what it does not fix. The short version for this page: esterification can open the fuel market for material that would otherwise be oleochemical, but it does not resolve a classification problem.
What both markets will ask
- The origin oil. Soy, rape, sunflower, palm: the answer changes the classification and the fatty acid profile at once.
- Free fatty acid and total fatty matter, with methods named.
- The classification, with evidence. This is the single biggest source of stalled acid oil offers we see.
- Certification, if you are aiming at the fuel market.
- Consistency. Refinery by-product streams are steady by nature, which is worth saying out loud because it is an advantage.
A note on accuracy
Everything above is drawn from what companies have published about their own operations, from trade association material and from price reporting agencies. Capacity gets delayed, projects get cancelled and feedstock slates change with the spread, so treat this as a map of the landscape rather than a live position. Where a name appears, it is because that company has said publicly what it does, not because we have any relationship with them.
If something here is out of date or wrong, tell us and we will correct it. We would rather be corrected than repeat something that costs someone a week.
Frequently asked questions
Who buys acid oils in Europe?
Two groups. Biodiesel and HVO producers buy them as feedstock where the classification supports it, and oleochemical manufacturers buy them as raw material for fatty acids and derivatives. Neste lists residues from vegetable oil processing among its top three waste and residue categories.
What decides whether acid oil is worth more as fuel or as oleochemical feedstock?
The classification, and after that the free fatty acid and total fatty matter. The fuel market pays for what the material can be counted as; the oleochemical market pays for what can be made from it. They are not comparable on a single number.
What is total fatty matter and why does it matter?
It is the share of the material that is actually fatty matter rather than water, impurities or unsaponifiables, and it is the number a soap or fatty acid buyer works from. Have it on the offer; without it an oleochemical buyer cannot price the parcel.
Is soapstock acid oil Annex IX Part A?
Soapstock from vegetable oil refining is treated as an advanced feedstock, but the position depends on the origin oil and the process, and it has to be evidenced rather than asserted. Settle it before you quote; it is the most common reason an acid oil offer stalls.
Does esterification make acid oil more valuable?
It can open the fuel market for material that would otherwise be oleochemical, by changing the free fatty acid profile. It does not fix a classification problem and it does not fix contamination. Our esterified acid oils page covers what it does and does not change.
Is there a price reference for acid oil?
Fastmarkets launched a soapstock acid oil assessment for Amsterdam in 2025. We do not publish price assessments ourselves and do not quote levels on this site.
Market news
Recent headlines from across the feedstock and renewable fuel sector. Nothing specific to this market has come through the wires lately, so this is the wider view. The links go to the publisher; we do not host or edit their reporting, and a headline here is not our endorsement of it. Scroll for more.
- Call for papers on AI for circular economy: Intelligent algorithms for sustainable resource recovery
- NEDO, Kyoto University build world’s first hydrogen beamline at SPring-8-II
- Air Products and Nobian sign long-term agreement for RFNBO-compliant hydrogen
- Romania’s Senate approves green hydrogen law
- Namibia pioneers Africa’s first green hydrogen facility
- Hamburg starts building hydrogen connector for HH-WIN network
- Commercial use of green hydrogen gets under way in Czechia
- Kawasaki Heavy starts Kawasaki hydrogen plant with 18-ton daily capacity
- The Navy, Amyris, Emvolon, Haffner Energy and the Incredible Shrinking Refinery
- ICM supplying processing tech for Atvos’ Brazilian corn ethanol production plant
- Outage at South Africa’s Natref refinery
- Australian Government releases national maritime emissions reduction plan
- Circularity Communicated Conference 2026
- Circular fashion: Design, science and value in a sustainable clothing industry
- nova-Institute hosts the chemical industry defossilisation summit
- Quick Scan Circular Business Models
- Rubbermaid Brilliance line expands with Eastman’s Tritan Renew
- New ABC data reveals how America’s biogas is used today
18 headlines, updated automatically. Last refreshed .
Sources and further reading
Primary sources for the rules and figures on this page, so you can check them yourself. Legislation is amended: always read the consolidated text on the date that matters to you.
Who to ask about Who buys acid oils
Just ask. Have acid oil or soapstock to place? Send the origin oil, the free fatty acid, the total fatty matter and the certification, and we will tell you which market it belongs in. You get Bart van den Brug on the other end, same working day, in English or Dutch, and across the team also in French, Portuguese, Polish, Czech and Russian.
On how we work: on the feedstocks and fuels on this site we are a broker. We never take title, we do not trade our own book, and we are paid a commission on business that concludes. Additives are the one exception: those we also buy and sell for our own account, and we say in which capacity we are acting before you commit to anything. Either way you will hear it from us when the answer is no, or when your parcel is not ready for the conversation you want to have. A market read or a second opinion on a specification costs nothing and commits you to nothing.
Happy to look at whatever you have, even if it is half an analysis and a question.
+31 6 115 83 448
bart@sustainablecommodities.eu
Sustainable Commodities 3 B.V., Lemmer, the Netherlands
Ask about Who buys acid oils
A direct line to the desk. We answer the same working day in almost all cases, and we will tell you plainly when a cargo is not something we can place.
Prefer email? bart@sustainablecommodities.eu · +31 6 115 83 448
Last reviewed 02 September 2026. Regulatory references are given for orientation and are not legal advice: verify against the current Official Journal text before contracting.