6 Inch Square Compostable Clamshell Containers
Bagasse typically skips fluorinated coatings, but no brand verification exists.
Sugarcane fiber clamshells biodegrade and don't normally require PFAS water barriers. The brand gives no PFAS statement or testing details.
We flunk more products than we pass. This one earned its grade. How we grade
Material
bagasse (sugarcane fiber), compostable coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
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.
Compostable coating breakdown and microparticle release
Starch-based and PHA coatings are designed to degrade in industrial compost but may shed particles if damaged or exposed to prolonged moisture during storage or use. No specific testing data available for Bagasse brand; risk is material-class dependent, not brand-specific.
Formaldehyde / VOCs
Bagasse pulp is often chlorine-bleached and may contain residual aldehydes or cross-linking resins used in molding. No published analysis of Bagasse brand containers available; industry standard is to verify bleach-free or reduced-bleach processing, which this brand does not disclose.
Source: ATSDR ↗Moisture-induced coating failure and food contamination
Compostable coatings are not as water-resistant as plastic or fluorinated paperboard. Prolonged exposure to moisture or grease may cause coating separation, allowing bagasse fibers to contact food. Practical risk is low for short-term food storage but increases with time.
What’s reassuring
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
BPA & bisphenols
Bagasse clamshells do not use conventional plastic resins (PET, polystyrene), so BPA and phthalate contamination is not a mechanism for this product class. Risk is eliminated by material choice.
Source: FDA ↗Heavy metals
Bagasse fiber and compostable polymers do not accumulate lead, cadmium, or antimony in the same manner as ceramic glazes or textile dyes. No published reports of metal leaching from bagasse-based foodware exist.
Source: FDA ↗The full breakdown
What it's made of and why it matters
Bagasse is the fibrous residue left after sugarcane juice extraction. These containers use bagasse pulp molded into a clamshell shape with a compostable coating (typically starch-based or polyhydroxyalkanoate/PHA) rather than plastic resin. The base material itself is inherently inert; hazard risk comes entirely from the coating layer and any post-processing chemicals applied during molding and bleaching.
The brand's record and disclosure
Bagasse as a brand has not published detailed chemical composition or independent testing data for coatings on its public materials. No major recalls or contamination incidents are documented in public sources for this specific product line. The brand's silence on PFAS, BPA, and coating composition is typical for smaller compostable-packaging vendors but limits verification of safety claims.
How it compares in its category
Bagasse clamshells avoid the PFAS-coated paperboard and plastic-lined containers common in conventional food service packaging. Compared to polystyrene foam and plastic clamshells, bagasse eliminates BPA and phthalate leaching risk. Trade-off: compostable coatings may be less moisture-resistant than fluorinated alternatives, so performance with greasy or wet foods is lower.
If you buy it
Use for room-temperature and chilled foods only; avoid microwave heating or contact with hot liquids above 60C, as polymer coatings may degrade and release constituents. Inspect containers for visible damage or delamination before reuse; discard if coating is peeling or flaking. Store in a dry place to prevent premature breakdown of the compostable coating. Dispose in industrial compost, not home compost or landfill, to realize the environmental benefit.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Bagasse 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.