Catalyst · Waterproof Phone & Tech Cases
Amazon Catalyst Iphone Waterproof Case Amazon Iphone Case With Screen Protector Liquid Silicone Phone
Silicone base likely lower concern, waterproof coating origin unclear.
Catalyst's liquid silicone case uses waterproofing method not disclosed publicly. Silicone itself poses lower PFAS risk, but coating source remains uncertain.
The safe swap
Spigen Tough Armor
iPhone 17 Series Tough Armor T AI MagFit Case
85/100 safety
Same rubric that flunked this product. The swap earned its B.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Liquid silicone with unspecified waterproof treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
This case uses liquid silicone rubber (LSR), a synthetic polymer with good chemical stability and low leaching risk under normal use. The critical unknown is the waterproof treatment applied to achieve water resistance; Catalyst does not publicly specify whether this uses Teflon-type coating-based coatings, silicone-based hydrophobic treatments, or other polymer systems. Waterproof coatings are where PFAS contamination typically enters consumer phone cases, so the lack of transparency here is the main concern.
The brand's record and disclosure
Catalyst is a mid-market phone accessory brand (owned by Caudabe) with no published environmental health or chemical disclosure policy on their website or product documentation. No independent third-party certifications (e.g., BlueSign, OEKO-TEX, Cradle to Cradle) are claimed. The company has not publicly addressed PFAS use or committed to phasing it out, which is standard practice for transparency-leading brands in this category.
How it compares in its category
Phone cases fall into a murky middle ground for regulation; they are low-migration consumer products (not food contact) but are frequently handled and may off-gas volatile compounds. Cases using disclosed Teflon-type coating-free or PFAS-free waterproof treatments (e.g., from Spigen, OtterBox certified lines) are becoming available. Catalyst's silence on coating chemistry is more evasive than established competitors, though LSR itself is not a red flag material.
If you buy it
Avoid prolonged contact with high heat (direct sun, hot car dashboard) as liquid silicone can soften and coatings may degrade. Wash hands after extended use if concerned about transfer of waterproof coating residues. Inspect regularly for cracks, peeling, or discoloration; replace if the coating delaminates or feels sticky, which may indicate breakdown of the waterproof layer. Do not microwave or expose to temperatures above 50 degrees Celsius.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Waterproof coating composition (PFAS proxy)
Catalyst does not disclose whether the waterproofing uses fluorinated compounds (Teflon-type coating, polyfluoroalkyl substances), silicone hydrophobic resins, or other systems. This is the primary unresolved hazard for this product class.
Coating degradation and migration
Waterproof coatings on phone cases can wear, peel, or degrade with age and heat exposure, potentially releasing coating particles or residual solvents. User reports of peeling silicone cases are common across the category.
Volatile organic compounds (VOCs) off-gassing
Liquid silicone and waterproof treatments may emit trace VOCs (e.g., cyclic siloxanes, residual solvents) especially in new products. No emissions testing data is available for this model.
Heavy metals in colorants (if dyed)
Liquid silicone can be pigmented; no evidence of heavy metal contamination in Catalyst cases is on record, and silicone pigments are generally low-risk, but product color source is not disclosed.
Microplastic shedding
Well-made silicone cases do not typically shed microplastics under normal handling. Risk rises if the waterproof coating or case body delaminates or fragments.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 42% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Waterproof Phone & Tech Cases
Spigen Tough Armor
iPhone 17 Series Tough Armor T AI MagFit Case
Polycarbonate and TPU (thermoplastic polyurethane)
No PFAS risk signals detected in this rigid plastic case.
⚠Brand says nothing about PFAS
Spigen Tough Armor
Samsung Galaxy S24
Thermoplastic polyurethane (TPU) and polycarbonate (PC)
Lower concern. Phone case, not high-risk product category.
⚠Brand says nothing about PFAS
Spigen Tough Armor
Spigen Galaxy S23 Series Case Tough Armor
Thermoplastic polyurethane (TPU) and polycarbonate blend
Lower concern; no known PFAS-prone materials or treatments identified.
⚠Brand says nothing about PFAS
More waterproof phone & tech cases 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.