Oleamide vs Erucamide: Choosing the Right Fatty-Amide Slip Additive

Two fatty-amide slip agents do the same job in plastic film, and a lot of formulators reach for whichever the last supplier shipped. That is how you end up with odor complaints, coefficient-of-friction drift over a roll, or a premium additive paying for performance the job did not need. Oleamide and erucamide are not interchangeable.

The short version: oleamide (C18:1, CAS 301-02-0) blooms fast and costs less; erucamide (C22:1, CAS 112-84-5) blooms slower but gives a lower, more stable coefficient of friction with less odor and better thermal stability. Oleamide is the cheaper, faster tool; erucamide is the better-performing one when COF stability, odor, high-temperature processing, or roll telescoping matter. The right pick is the application, not a default.

Two fatty amides, two bloom rates

Both are unsaturated fatty-acid amides that work the same way, by migrating to the film surface and forming a lubricating layer. The difference is chain length. Oleamide’s shorter C18 chain migrates fast, so slip develops within hours. Erucamide‘s longer C22 chain migrates slowly, so slip develops over a longer period but the surface layer is more stable and the ultimate friction is lower.

The comparison

When oleamide is the right choice

Choose oleamide when speed to slip and cost drive the decision: blown film and bags that need slip quickly off the line, lower-temperature extrusion, and high-volume applications where the lower price per pound matters and the odor and COF-stability demands are modest. For much of the commodity LDPE and LLDPE film market, oleamide is exactly the right tool.

When erucamide earns its premium

Choose erucamide when the film has to perform harder: BOPP and oriented films, premium and food packaging where odor must stay low, high-temperature processing that would degrade oleamide, large rolls prone to telescoping, and any application that needs a low, stable COF held over time and temperature. Here the higher price buys real, measurable performance.

The honest distributor position

The thin vendor pages that rank for this comparison almost always conclude with “so buy our product.” That is not selection guidance. The honest answer is that oleamide is not a worse erucamide, it is a different tool, and a credible supplier carries both and recommends the one your line needs, sometimes even a blend to tune bloom rate.

RawSource supplies both oleamide and erucamide in bulk for plastics and polymer film, so the recommendation can follow your application instead of our inventory. The slip mechanism is detailed in how oleamide works as a slip agent, and the dosing and antiblock balance in slip and antiblock in PE/PP film.

Buying oleamide and erucamide in bulk

RawSource supplies both fatty-amide slip agents as prills, beads, or powder, with CoA documentation, by the bag and pallet. Tell us your polymer, process temperature, odor and food-contact requirements, and COF target, and request samples of each to qualify on your own film before committing.

Frequently asked questions

Which is better, oleamide or erucamide?

Neither is universally better. Oleamide blooms faster and costs less; erucamide gives a lower, more stable COF with less odor and better thermal stability. Choose by application: oleamide for fast, cost-driven slip, erucamide for premium, high-temperature, or low-odor film.

Why does erucamide cost more than oleamide?

Erucamide is the longer-chain C22 amide and delivers slower, more controlled bloom with lower COF, less odor, and higher thermal stability. The premium reflects that performance, not just the raw material.

Does oleamide have more odor than erucamide?

Generally yes. Oleamide tends to have a more noticeable odor, which is one reason erucamide is preferred for food and premium packaging where low odor matters.

Which slip agent is best for BOPP?

Erucamide is usually preferred for BOPP and oriented films because of its slower, more stable bloom and higher thermal stability through the orientation process.

Can I blend oleamide and erucamide?

Yes, blends are used to tune bloom rate and cost, combining oleamide’s fast initial slip with erucamide’s stable long-term COF. The ratio is set to the application and validated on the film.

Editorial note. This article is general technical guidance for plastics and packaging professionals, written for industrial and professional use. Oleamide and erucamide here are industrial slip additives for plastics, not food, supplement, or consumer products, and nothing here is a health or efficacy claim. Performance and cost comparisons are typical industry ranges to validate by trial; the Certificate of Analysis governs the material you buy. Consult the product Safety Data Sheet (SDS) before use. RawSource makes no warranty, express or implied, and assumes no liability for use of this information.