The Short Answer
Most canned tomatoes today are technically BPA-free, but that doesn't mean they are chemical-free.
Major brands like Muir Glen, Hunt's, and Costco's Kirkland Signature have transitioned away from Bisphenol-A (BPA) linings. However, they have replaced them with acrylic, polyester, or vinyl (PVC) linings. These are known as "regrettable substitutes"āchemicals that solve the BPA PR problem but may still disrupt hormones or contain carcinogens like vinyl chloride.
Because tomatoes are highly acidic, they aggressively eat away at these linings, pulling chemicals into your food at higher rates than beans or corn. The only way to be 100% safe is to buy tomatoes in glass jars (like Jovial or Eden Foods) or Tetra Pak cartons (like Pomi).
Why This Matters
Tomatoes are solvent.
Unlike low-acid foods (beans, corn), tomatoes are highly acidic. This acidity acts like a solvent, breaking down the protective coating inside the can and leaching chemicals directly into the sauce or paste. If there is a chemical in the lining, the tomato acid will find it.
"BPA-Free" is a marketing trick.
A 2024 Consumer Reports study found BPA in 79% of foods tested, including those labeled "BPA-Free." Why? Because BPA is ubiquitous in processing equipment, conveyor belts, and even the "BPA-free" alternative linings themselves (often as a contaminant).
The alternatives might be worse.
Manufacturers have swapped BPA for BPS (Bisphenol S) or PVC (polyvinyl chloride).
- BPS is structurally similar to BPA and is also an endocrine disruptor.
- PVC is made from vinyl chloride, a known human carcinogen.
- Polyester/Acrylic linings are considered "safer" but lack long-term safety data.
What's Actually In The Can
When you buy a "BPA-Free" can of tomatoes, you are likely getting one of these three linings:
- Vinyl (PVC) ā Used by brands like Muir Glen. Itās cheap and flexible but made from vinyl chloride. Is Bpa Free Lining Safe
- Acrylic / Polyester ā Used by Hunt's and Campbell's. These are plastics. While they don't contain BPA, they can release other compounds when heated or stored for long periods in acidic tomato juice.
- Oleoresin ā A mixture of oil and plant resin. This is the safest can lining, but it rarely works for tomatoes because the acid destroys it. It's mostly used for beans.
What to Look For
Green Flags:
- Glass Jars ā The gold standard. Glass is inert and does not react with tomato acid.
- Tetra Pak / Combibloc ā These are the "juice box" style cartons. They use layers of paper, polyethylene, and aluminum, but the food contact layer is typically safer than can epoxy.
- Amber Glass ā Specifically used by Eden Foods to protect nutrients from light damage and avoid can linings.
Red Flags:
- "BPA-Free" Metal Cans ā Better than old-school BPA, but still a chemical plastic liner.
- Dented Cans ā Dents crack the internal lining, creating a direct path for metal and chemicals to leach into the tomatoes.
- Old Stock ā The longer a high-acid food sits in a can, the more lining it dissolves. Check the production date.
The Best Options
Stop buying metal cans if you can afford the switch. These brands use inert packaging that won't leach into your marinara.
| Brand | Product | Packaging | Verdict | Why |
|---|---|---|---|---|
| Eden Foods | Crushed Tomatoes | Amber Glass | ā | The safest option on the market. Dark glass protects nutrients. |
| Jovial | Diced Tomatoes | Glass Jar | ā | 100% organic Italian tomatoes in pure glass. No plastic contact. |
| Pomi | Chopped Tomatoes | Tetra Pak | ā | BPA-free carton. Cheaper than glass and easy to find. |
| Bionaturae | Strained Tomatoes | Glass Jar | ā | Excellent quality organic puree in glass. |
| Muir Glen | Fire Roasted | Can | ā ļø | "BPA-Free" vinyl lining. Okay for occasional use, but not daily. |
| Hunt's | Diced Tomatoes | Can | ā ļø | Acrylic/Polyester lining. Better than BPA, but glass is superior. |
The Bottom Line
1. Switch to glass. Brands like Jovial and Eden Foods use glass jars. This is the only way to completely avoid lining chemicals.
2. Use Tetra Paks. Pomi and Parma sell tomatoes in boxes. This is a lighter, safer alternative to cans if glass is too expensive.
3. Don't panic, just rotate. If you must use cans, choose "BPA-Free" brands like Muir Glen or Kirkland, but don't let them sit in your pantry for years. The fresher the can, the less leaching has occurred.
FAQ
Does washing canned tomatoes remove BPA?
No. The chemicals leach into the juice and the flesh of the tomato itself. Rinsing might remove some sodium, but it won't remove the plasticizers that have migrated into the fruit.
Are organic canned tomatoes safe?
Not necessarily. "Organic" refers to how the tomatoes were grown (no pesticides), not the packaging. Many organic brands still use cans with plastic linings that leach chemicals. Always check the packaging type.
What is BPA-NI?
You might see "BPA-NI" on supplier documents. It means "BPA Non-Intent," meaning they didn't add BPA, but they can't guarantee it's 0% because it's everywhere in the manufacturing environment. It is essentially the industry's legal way of saying "BPA-Free."