Corn Oil · Cast Iron Cookware Seasoning & Oil
Mid East Corn Oil
Cooking oil product carries lower PFAS concern.
Corn oil is a refined food product with no known PFAS risk. No coatings, treatments, or fluorochemicals involved in standard production.
The better-graded swap
Lodge
Cast Iron Seasoning Spray
85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
refined vegetable oil
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Mid East Corn Oil is made of, ingredients and materials
Refined corn oil is extracted from corn kernels and processed to remove impurities, proteins, and most natural compounds. The refining process (bleaching, deodorization, heat treatment) significantly reduces pesticide residues and contaminants compared to crude oil. Unlike non-stick coatings or ceramic glazes, refined vegetable oil itself does not contain synthetic binders, pigments, or metal oxides that would leach into food.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Oxidative degradation at high heat
All refined seed oils undergo thermal degradation and form oxidized compounds (aldehydes, peroxides) when heated repeatedly or stored improperly. This is a use hazard rather than a manufacturing one; disposal or incineration of degraded oil can pose minor air quality concerns in home kitchens with poor ventilation.
Pesticide residue
Conventionally grown corn may contain residues of herbicides (glyphosate, atrazine) or insecticides. Refining removes most but not all residues; no public testing data is available for this specific brand. Organic or non-GMO certification on the label would indicate lower pesticide likelihood, but this product shows neither.
Source, EPA ↗Rancidity and mycotoxins if stored improperly
Improper storage (heat, humidity, light) accelerates rancidity and can allow mold growth if water contamination occurs. Aflatoxin (a mycotoxin) in corn is controlled at the grain level by FDA, but long-term home storage beyond 18-24 months increases risk of degradation products harmful if ingested in large quantities.
Container leaching if packaged in plastic
If stored or shipped in PET or other plastic, prolonged contact (especially if exposed to warmth) can leach small amounts of antimony catalyst or phthalate plasticizers into the oil. This risk is higher if the product sits in a warm warehouse or vehicle. Transferring to glass upon receipt mitigates this.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
Refined vegetable oils are not fortified with vitamins, minerals, or synthetic additives in standard formulations. No documented cases of lead, cadmium, or other heavy metals in refined corn oil above background agricultural levels.
Source, FDA ↗The full breakdown
The brand's record and disclosure
No public safety recalls, lawsuits, or third-party certifications are documented for this product or brand. The brand makes no explicit public stance on supply chain transparency, pesticide sourcing, or testing protocols. Standard refined corn oil products are not typically subjected to individual brand certification, as they fall under FDA food regulations for oils and fats.
How it compares in its category
Refined corn oil is one of the most commonly used cooking oils in North America and carries no documented safety profile notably different from canola, soybean, or vegetable oil blends. It is more stable at high heat than unrefined oils and does not require the maintenance concerns of cast iron, non-stick cookware, or ceramic surfaces. As an ingredient rather than cookware, it poses none of the coating degradation or metal leaching risks of the cookware category proper.
If you buy it
Store in a cool, dark place away from direct sunlight to slow oxidation and rancidity. Refined corn oil has a smoke point around 400-450 degrees Fahrenheit (204-232 Celsius), making it suitable for sauteing and moderate-heat frying but not ideal for very high-heat searing. Check the expiration date and discard if the oil smells off or shows cloudiness, signs of oxidation. Decant into a glass container if the original packaging is plastic, as prolonged contact between polyethylene and heated oil can increase leaching of plasticizers over months.
What we don’t know
- Basis
- Model estimate, 92% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Corn Oil has made none
Formulations change between production runs, so check the current label. How we grade.
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More cast iron cookware seasoning & oil grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.