Dart Container · Food Packaging
Dart ProPlanet 8" x 8" 3-Compartment Compostable Fiber Hinged Take-Out Container
Avoid, compostable fiber containers often use fluorinated PFAS for grease resistance.
Dart's compostable fiber takeout container has an unnamed water and grease-resistant coating. Such treatments commonly use PFAS in compostable products.
The safe swap
Eco-Products
Eco-Products WorldView Renewable Sugarcane Containers 16 oz
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
Compostable fiber (plant-based pulp) with unknown water/grease-resistant coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent treatments have historically contained PFAS chemicals.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Category baseline
food packaging is a category where PFAS exposure is more common.
PFAS
Dart does not publicly specify whether the grease-resistant coating uses alternative chemistries (silicone, wax emulsions, chitosan) or synthetic polymers. Some proprietary coatings may leach monomers or plasticizers under heat or with acidic/fatty foods.
Source: ATSDR ↗Microplastic or fiber shedding when heated or agitated
Molded fiber can shed small particles if the coating degrades or if the container is microwaved, despite 'compostable' labeling. Users often misuse these containers at temperatures beyond their design limits.
Incomplete or slow decomposition if mishandled
If the coating is PFAS-based, it will not degrade in industrial composting and will persist in the environment. Even PFAS-free coatings may not fully break down in home composting, creating a false sense of environmental safety.
Contamination risk if reused or washed
These are single-use containers and not designed for washing or reuse. Repeated water exposure or high-temperature washing can cause coating separation and fiber degradation, potentially releasing coating particles into food or water.
What’s reassuring
Migration of printing inks or adhesives
No specific reports for Dart ProPlanet, but molded fiber containers with printed branding can leach ink components if coatings are compromised. Dart does not disclose ink formulation or migration testing data.
The full breakdown
What it's made of and why it matters
Dart ProPlanet containers are made from plant-based molded fiber (typically bagasse, wheat straw, or recycled paper pulp) and marketed as compostable. However, to resist grease and moisture from food, manufacturers typically apply a water/oil barrier coating. Dart has not publicly disclosed whether this coating contains PFAS or alternative chemistries. The grease-resistance need is real in food service, but the solution chosen remains opaque.
The brand's record and disclosure
Dart Container does not maintain a public PFAS policy, safety data sheet readily available for consumers, or third-party certifications addressing coating chemistry. The company has faced no major recalls specifically tied to this product line, but the lack of transparency about coating composition is a red flag in an industry where PFAS use in compostable and paper-based foodware is documented. Competitors like World Centric and Footprint have moved toward PFAS-free claims; Dart's silence suggests no equivalent commitment.
How it compares in its category
Most single-use compostable fiber containers face the same grease-barrier dilemma. This Dart line sits in the middle price tier and is widely stocked in foodservice supply chains. Alternatives include wax-lined paper containers (older standard, less compostable), silicone-coated fiber (PFAS-free but not always marked), or certified PFAS-free compostable containers (smaller brands, higher cost). Dart's market penetration does not reflect safety superiority; it reflects distribution scale and cost leadership.
If you buy it
Use only for room-temperature or warm (not hot) foods; high heat can accelerate coating migration. Do not microwave. If composting, verify your facility accepts Dart's certified compostable grade (typically BPI or EN 13432 certified); home compost may not reach the required temperature. Replace if the interior surface shows visible wear, separation, or discoloration. For frequent users (restaurants, catering), request Dart's technical data sheet or switch to a brand with published PFAS-free certification.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Dart Container has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Food Packaging
World Centric
Compostable Fiber Compost-A-Pak Containers
Fiber-based (wood pulp/molded fiber), compostable coating
Proprietary coating chemical migration
Limited concern
Moisture and microbial growth in fiber matrix
Limited concern
Coating degradation under heat or fatty foods
Moderate concern
Recycling contamination if misdisposed
Limited concern
Lower concern with documented PFAS-free commitments, though independent lab confirmation on this specific product absent.
✓Verified PFAS-free by a third party
Vegware
Compostable Microflute Takeaway Box
Plant-based fiber (sugarcane bagasse microflute); water-based coatings
Coating degradation under heat and moisture
Limited concern
Lower concern; plant-based compostable packaging with stated PFAS-free positioning and limited independent verification.
✓Verified PFAS-free by a third party
Loliware
Compostable Hinged Deli Containers
Polylactic acid (PLA) bioplastic, plant-based coatings
PLA oligomer leaching
Limited concern
Microplastic generation on degradation
Limited concern
Lower PFAS concern; compostable bioplastic design avoids fluorine coatings.
✓Verified PFAS-free by a third party
More food packaging 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.