9 x 9 x 3 | Fiber Clamshell (3 Compartment) 200 per case
Avoid until the brand reveals its barrier coating chemistry.
Fiber clamshells rely on water and grease-resistant coatings to prevent food leakage. Greensafe won't disclose what chemical does that job.
The safe swap
Plate Mate
Plant Plates
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
Molded fiber pulp with unspecified 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
Molded fiber coatings often contain proprietary polymer binders and synthetic waxes; acidic or fatty foods may promote migration of oligomers or plasticizers from the coating into food, though specific substances are unknown without disclosure.
Source: ATSDR ↗Coating degradation and microparticle shedding
Molded fiber clamshells degrade over time and with moisture exposure; peeling or flaking coatings can introduce coating fragments (visible or submicron) into food, especially if stored in humid conditions or reused.
Unlisted chemical residues from manufacturing
Molded fiber pulp production may use bleach, sizing agents, or anti-microbial treatments; residual chemicals from manufacturing are rarely declared and may leach into food-contact surfaces.
Thermal stability of coating unknown
Without specification of the coating's melting or degradation temperature, you cannot determine safe upper limits for storage or accidental heat exposure; some barrier coatings release volatile organic compounds (VOCs) or degradation byproducts when heated.
What’s reassuring
Heavy metals
If the pulp source includes post-consumer recycled fiber, contamination by lead from old printing inks or heavy metals is theoretically possible but not documented for Greensafe products; food-contact molded fiber is typically made from virgin or pre-sorted fiber.
Source: FDA ↗The full breakdown
What it's made of and why it matters
This product is molded fiber pulp (recycled paper/plant material) with an unspecified water and grease-resistant coating applied to the interior surfaces. Molded fiber itself is inert, but the coating chemistry is the critical unknown: manufacturers use proprietary blends of polymers, waxes, and chemical binders to repel moisture and oils, and these formulations vary widely in safety profile. Without disclosure of the specific barrier coating, you cannot assess whether it contains PFAS, phthalates, or other leachable substances, especially when exposed to acidic, fatty, or hot foods.
The brand's record and disclosure
Greensafe has not publicly disclosed the chemical composition of its clamshell coating or responded to inquiries about PFAS content. No third-party certifications (such as FDA approval, compostability standards with chemical verification, or SafeChoice labeling) are on record for this specific product line. The brand's silence on a known industry concern (PFAS prevalence in food-contact fiber coatings) is a red flag for informed purchasing.
How it compares in its category
Molded fiber clamshells are marketed as eco-friendly alternatives to plastic hinged containers, but they occupy a murky middle ground: they avoid BPA and phthalates from plastic, but many now use fluorinated or non-fluorinated barrier coatings with unproven safety records. Competing brands (including some with public PFAS commitments or third-party testing) offer greater transparency. Uncoated molded fiber or certified compostable plastics are safer bets if you know the full supply chain.
If you buy it
Restrict use to cold or room-temperature foods only; heat accelerates migration of coating chemicals, and hot/oily foods (pizza, fried items, soups) are highest-risk. Do not use in microwaves or conventional ovens. Replace containers every 6 months or immediately if the interior coating shows peeling, discoloration, or degradation. Request the manufacturer's Material Safety Data Sheet (MSDS) for the coating; if unavailable, escalate to the distributor or stop ordering until the brand provides it.
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
- Greensafe 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.