Hexane vs EPDM Compatibility
Verified chemical resistance rating (Incompatible — Immediate Failure Risk), thermal boundary limits (Not recommended at any temperature or concentration), and material specification guide for EPDM exposed to Hexane in Aliphatic Hydrocarbon / Fuel / Industrial Oil service.
Hexane vs EPDM: D-Severe Effect
Exposing EPDM to Hexane (Formula: C6H14 (n-Hexane), CAS: 110-54-3) carries an official rating of D-Severe Effect (Incompatible — Immediate Failure Risk). Maximum recommended thermal operating limit: Not recommended at any temperature or concentration. Best Grade A alternative materials for continuous or high-temperature service: Stainless Steel, Viton, PTFE, PVDF.
Technical Specifications and Operating Parameters
| Chemical Medium | Hexane |
|---|---|
| Chemical Formula | C6H14 (n-Hexane) |
| CAS Registry Number | 110-54-3 |
| Chemical Functional Class | Aliphatic Hydrocarbon / Fuel / Industrial Oil |
| Wetted Material | EPDM |
| Official Resistance Rating | D-Severe Effect (Grade D) |
| Engineering Service Verdict | Incompatible — Immediate Failure Risk |
| Max Temp and Concentration Limit | Not recommended at any temperature or concentration |
| Best Grade A Alternatives | Stainless Steel, Viton, PTFE, PVDF |
| Backtest and Audit Verification | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Hexane Cross-Material Comparison Matrix (9 Materials)
Direct benchmark ratings across all 9 reference industrial materials for Hexane:
| Material Name | Compatibility Rating | Service Verdict | Temperature Limit | Datasheet |
|---|---|---|---|---|
| Buna-N | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| EPDM | D-Severe Effect | Incompatible — Immediate Failure Risk | Not recommended at any temperature or concentration | Report |
| HDPE | B-Good | Acceptable with Operating Controls | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service | Report |
| Polypropylene | B1-Good | Acceptable with Routine Inspection | Up to 120°F (49°C) with minor absorption/corrosion allowance | Report |
| PTFE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVC | B-Good | Acceptable with Operating Controls | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service | Report |
| PVDF | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Stainless Steel | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Viton | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
Chemical and Material Interaction Analysis
Engineering Compatibility Verdict
Hexane vs EPDM: D – Severe Effect (Do Not Use)
Summary Verdict: EPDM (Ethylene Propylene Diene Monomer) is rated D-Severe Effect (Incompatible — Immediate Failure Risk) when exposed to Hexane (Formula: C6H14 (n-Hexane), CAS: 110-54-3). PROHIBITED for wetted service. Immediately substitute with an A-rated material shown in the cross-material comparison table below.
Quick Engineering Specifications
| Chemical Media | Hexane |
|---|---|
| Chemical Formula | C6H14 (n-Hexane) |
| CAS Registry Number | 110-54-3 |
| Chemical Classification | Aliphatic Hydrocarbon / Fuel / Industrial Oil |
| Wetted Material | EPDM (Ethylene Propylene Diene Monomer) (Synthetic Polar-Service Elastomer) |
| Official Resistance Rating | D – Severe Effect (Do Not Use) (Grade D) |
| Recommended Temperature Window | Not recommended at any temperature or concentration (Material limit: -60°F to 300°F (-51°C to 149°C)) |
| Top Grade-A Alternatives | Stainless Steel, Viton, PTFE, PVDF |
| Data Verification Status | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Chemical & Material Interaction Analysis
Hexane is classified as an aliphatic hydrocarbon / fuel / industrial oil (hydrocarbon permeation and softening in non-oil-resistant polymers and EPDM rubbers). Used in fuel transfer lines, hydraulic power units, lubrication systems, and petrochemical storage. When selecting wetted components for EPDM, engineers must account for both concentration-dependent chemical attack and thermal stress:
- Reaction & Failure Mechanism: Causes rapid, catastrophic material failure—including severe dissolution, stress cracking, extreme volumetric blowout (>25% swell), or rapid pitting corrosion (>50 mpy).
- Material Profile (EPDM): Outstanding resistance to polar fluids including ketones (acetone, MEK), alcohols, glycols, phosphate ester hydraulic fluids (Skydrol), alkalis, and dilute acids. However, exhibits rapid, catastrophic volumetric swelling and softening when exposed to petroleum oils, gasoline, diesel, kerosene, aliphatic/aromatic hydrocarbons, and chlorinated solvents.
- Application Scope: Common wetted components include butterfly valve liners, O-rings, sanitary Tri-Clamp gaskets, caustic dosing hoses, and water/wastewater treatment seals.
Cross-Material Compatibility Comparison for Hexane
To help you select the longest-lasting piping, valve lining, or O-ring seal for Hexane, the table below compares EPDM against 8 other common industrial engineering materials:
| Wetted Material | Compatibility Rating | Service Recommendation | Material Temp Range |
|---|---|---|---|
| Polypropylene (PP Homopolymer & Copolymer) | B1-Good | Acceptable with Routine Inspection | 32°F to 180°F (0°C to 82°C) |
| 316 / 304 Austenitic Stainless Steel | A-Excellent | Safe for Continuous Industrial Service | -325°F to 800°F (-198°C to 426°C) |
| Viton® (FKM Fluoroelastomer) | A-Excellent | Safe for Continuous Industrial Service | -15°F to 400°F (-26°C to 204°C) |
| PTFE (Teflon® / Polytetrafluoroethylene) | A-Excellent | Safe for Continuous Industrial Service | -328°F to 500°F (-200°C to 260°C) |
| EPDM (Ethylene Propylene Diene Monomer) (Current Page) | D-Severe Effect | Incompatible — Immediate Failure Risk | -60°F to 300°F (-51°C to 149°C) |
| PVC Type I (Unplasticized Polyvinyl Chloride / uPVC) | B-Good | Acceptable with Operating Controls | 32°F to 140°F (0°C to 60°C) |
| PVDF (Kynar® / Polyvinylidene Fluoride) | A-Excellent | Safe for Continuous Industrial Service | -40°F to 280°F (-40°C to 138°C) |
| Buna-N (Nitrile / NBR Elastomer) | A-Excellent | Safe for Continuous Industrial Service | -40°F to 250°F (-40°C to 121°C) |
| HDPE (High-Density Polyethylene) | B-Good | Acceptable with Operating Controls | -60°F to 140°F (-51°C to 60°C) |
Frequently Asked Questions (FAQ)
Is EPDM compatible with Hexane?
EPDM is rated D-Severe Effect (Incompatible — Immediate Failure Risk) with Hexane (Formula: C6H14 (n-Hexane), CAS: 110-54-3). Causes rapid, catastrophic material failure—including severe dissolution, stress cracking, extreme volumetric blowout (>25% swell), or rapid pitting corrosion (>50 mpy). PROHIBITED for wetted service. Immediately substitute with an A-rated material shown in the cross-material comparison table below.
What is the best alternative material for handling Hexane?
If EPDM does not meet your temperature or pressure requirements for Hexane, the highest-rated Grade A alternatives are Stainless Steel, Viton, PTFE, PVDF. Always verify O-ring elastomers and metallic fasteners separately before full-scale deployment.
Technical Engineering FAQs: Hexane vs EPDM
Click any question below for chemical failure-mode specifics, thermal derating limits, and material selection rules: