IV120 runs 118–122 g I₂/100g off our Dalian distillation line. We keep it there by adjusting the cut when the crude soybean oil feedstock changes, not because we have some automated system - because the person running that column knows what the material should look like coming off the line.
If you're making dimer acids, the iodine value at 120 gives you a predictable level of unsaturation for the dimerization reaction. Not "optimal" or "unmatched" - just predictable, which matters more when you're running the same reaction for eighteen months and don't want to re-tune your catalyst loading every other week. We had a customer in Malaysia who stopped adjusting their dimerization parameters after switching to our material. That kind of boring consistency is what actually matters in production.
The fatty acid content runs about 99%, give or take half a percent. Is it always exactly 99.0%? No. Does it need to be? If your dimerization process is that sensitive to a half-percent swing in purity, you've got bigger problems to sort out before worrying about which fatty acid supplier you're using.
For alkyd resin formulation, IV120 gives you enough unsaturation to support cross-linking without making the cure aggressive. If you're doing medium-oil alkyds (which is where most of this grade ends up), the linoleic/oleic split in our material runs about 52%/33% in a typical batch. That ratio gives you a predictable cure response. Your drying time stays put. Your film flexibility is decent. Not "exceptional" - decent. If you need "superior film properties," that's coming from your whole formulation, not from switching to a different fatty acid.
Weather resistance benefits from that linoleic level, but let's be honest: if your coating is going to sit in direct UV for years, the fatty acid choice is a small part of that story. Your UV absorber package, your HALS, your pigment selection - those matter way more than whether you used IV120 or IV130.
For surfactant production, IV120 provides hydrophobic chains for bio-based surfactants. The unsaturated content helps with emulsifying performance, but "helps" and "optimizes" aren't the same thing. If you're formulating for a specific detergency target, run a small trial first. Your whole surfactant structure matters more than which fatty acid you started with.
For rubber additives, IV120 can improve compound toughness and processability. The unsaturated sites give you places to react with other components in the rubber matrix. That said, if your rubber compound is highly saturated, IV120 might be more "lively" than you want. Give us a call and we'll talk through whether IV100 (more saturated) would be a better fit. We'd rather point you to the right grade than have you fighting with a material that's not quite right for your process.
It's processed from non-GMO soybean oil, renewable carbon content. REACH registered, RoHS compliant - paperwork available if procurement needs it. But I'm not going to oversell the "bio-based" angle. It's industrial grade fatty acid that happens to come from a plant instead of a refinery. If your specs require traceable bio-based content, this grade qualifies. If you're actually trying to hit sustainability targets, look at your whole formulation - the fatty acid is one part of that picture, not the whole answer.
Moisture stays under 0.3% because we maintain our vacuum pumps properly. Not because we have fancy inert gas blanketing or some high-tech drying system. When your vacuum equipment actually works, moisture doesn't sneak back in during processing. Basic plant discipline, not advanced technology.
Color (Gardner) usually stays within two points in a batch. Usually. If you need it tighter than that, tell us upfront - we can segregate batches, but it costs more and takes longer. We're not going to promise "ultra-low color" as if it's some kind of premium feature. It's industrial material. Sometimes the color's a bit higher, and we'll tell you when it is.
Samples come from current production - 1kg or 5kg, not from some separate "sample grade" that's more tightly controlled than what you'd actually get by the ton. What you test is what shows up at your plant.
Tell us what you're actually making and what's been giving you trouble, and we'll tell you straight whether IV120 is the right fit. Sometimes it is. Sometimes it isn't. Either way, you'll get an answer you can use, not a brochure.
Packaging follows whatever you're already set up for: 180kg drums, IBC totes, or bulk tanker if you're running steady volume. Export loads typically go 16–18 MT per 20ft FCL depending on packaging choice. Lead time is usually 10–15 days after order confirmation - faster if you're already on contract and we've planned the distillation schedule around you, which is how it should be if you're buying regularly.
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