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Hydrogen Sulfide Resistance of FEP

Is FEP compatible with Hydrogen Sulfide?

Compatibility Rating

At 20°C
A
Excellent
Excellent resistance - recommended for continuous use
At 50°C
NR
No Data
No data available

Why is FEP resistant to Hydrogen Sulfide?

FEP shows excellent resistance to Hydrogen Sulfide due to its fully fluorinated structure similar to PTFE, offering near-universal chemical resistance.

⚠️ When NOT to use FEP

Avoid using FEP (Fluorinated Ethylene Propylene) with molten alkali metals and fluorine gas. Suitable up to 200°C.

Comparison Table — All Materials for Hydrogen Sulfide

Material20°C50°C
HDPEAA
LDPEAA
PPAA
PTFEAA
PVDFAA
FEPANR
ECTFE/ETFENRNR
EPDMANR
Viton (FPM)CC
NBRDD
SiliconeNRNR
SS 316AA
SS 304AA
AluminiumAA
PVC RigidAC
PVC FlexibleCC
PMPNRNR
PolystyreneCNR
SANANR
PolycarbonateANR
PETGANR
Acetal (POM)ANR
Nylon (PA)ANR
PolysulfoneANR

A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data

🌡️ Temperature Note

Good resistance at both 20°C and 50°C. Maximum service temperature for this material is 200°C — above this, degradation risk increases significantly.

🔄 Better Alternative?

Consider: PTFE for higher temps. View all materials for Hydrogen Sulfide →

FAQ

Is FEP resistant to Hydrogen Sulfide?

FEP has Excellent (A) resistance to Hydrogen Sulfide at 20°C.

Can I store Hydrogen Sulfide in FEP?

Yes, FEP is rated A for Hydrogen Sulfide.

All Materials for Hydrogen Sulfide All Chemicals for FEP