Cyclohexylamine vs EPDM Compatibility
Verified chemical resistance rating (Acceptable with Routine Inspection), thermal boundary limits (Up to 120°F (49°C) with minor absorption/corrosion allowance), and material specification guide for EPDM exposed to Cyclohexylamine in Alkaline Base / Amine service.
Cyclohexylamine vs EPDM: B1-Good
Exposing EPDM to Cyclohexylamine (Formula: C6H11NH2 (C6H13N), CAS: 108-91-8) carries an official rating of B1-Good (Acceptable with Routine Inspection). Maximum recommended thermal operating limit: Up to 120°F (49°C) with minor absorption/corrosion allowance. Best Grade A alternative materials for continuous or high-temperature service: Stainless Steel, PTFE.
Technical Specifications and Operating Parameters
| Chemical Medium | Cyclohexylamine |
|---|---|
| Chemical Formula | C6H11NH2 (C6H13N) |
| CAS Registry Number | 108-91-8 |
| Chemical Functional Class | Alkaline Base / Amine |
| Wetted Material | EPDM |
| Official Resistance Rating | B1-Good (Grade B) |
| Engineering Service Verdict | Acceptable with Routine Inspection |
| Max Temp and Concentration Limit | Up to 120°F (49°C) with minor absorption/corrosion allowance |
| Best Grade A Alternatives | Stainless Steel, PTFE |
| Backtest and Audit Verification | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Cyclohexylamine Cross-Material Comparison Matrix (9 Materials)
Direct benchmark ratings across all 9 reference industrial materials for Cyclohexylamine:
| Material Name | Compatibility Rating | Service Verdict | Temperature Limit | Datasheet |
|---|---|---|---|---|
| Buna-N | C-Fair | Caution: Limited / Intermittent Service Only | Ambient intermittent contact only; do not pressurize | Report |
| EPDM | B1-Good | Acceptable with Routine Inspection | Up to 120°F (49°C) with minor absorption/corrosion allowance | Report |
| HDPE | B1-Good | Acceptable with Routine Inspection | Up to 120°F (49°C) with minor absorption/corrosion allowance | 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 | D-Severe Effect | Incompatible — Immediate Failure Risk | Not recommended at any temperature or concentration | Report |
| PVDF | C-Fair | Caution: Limited / Intermittent Service Only | Ambient intermittent contact only; do not pressurize | Report |
| Stainless Steel | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Viton | D-Severe Effect | Incompatible — Immediate Failure Risk | Not recommended at any temperature or concentration | Report |
Chemical and Material Interaction Analysis
Engineering Compatibility Verdict
Cyclohexylamine vs EPDM: B1 – Good (Minor Effect up to 120°F / 49°C)
Summary Verdict: EPDM (Ethylene Propylene Diene Monomer) is rated B1-Good (Acceptable with Routine Inspection) when exposed to Cyclohexylamine (Formula: C6H11NH2 (C6H13N), CAS: 108-91-8). Suitable for secondary transfer lines, static gaskets, and intermittent batch service. Avoid thin-walled high-stress dynamic seals without prior coupon testing.
Quick Engineering Specifications
| Chemical Media | Cyclohexylamine |
|---|---|
| Chemical Formula | C6H11NH2 (C6H13N) |
| CAS Registry Number | 108-91-8 |
| Chemical Classification | Alkaline Base / Amine |
| Wetted Material | EPDM (Ethylene Propylene Diene Monomer) (Synthetic Polar-Service Elastomer) |
| Official Resistance Rating | B1 – Good (Minor Effect up to 120°F / 49°C) (Grade B) |
| Recommended Temperature Window | Up to 120°F (49°C) with minor absorption/corrosion allowance (Material limit: -60°F to 300°F (-51°C to 149°C)) |
| Top Grade-A Alternatives | Stainless Steel, PTFE |
| Data Verification Status | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Chemical & Material Interaction Analysis
Cyclohexylamine is classified as an alkaline base / amine (high-pH alkaline attack, stress-corrosion risk at high temperatures, and dehydrofluorination of fluoroelastomers). Used in caustic scrubbing, CIP (Clean-in-Place) sanitation, neutralization, and chemical synthesis. When selecting wetted components for EPDM, engineers must account for both concentration-dependent chemical attack and thermal stress:
- Reaction & Failure Mechanism: Causes slight surface absorption, minor weight gain (1%–5% swell in polymers), or a low corrosion rate (<2 to 20 mpy in metals) up to 120°F (49°C).
- 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 Cyclohexylamine
To help you select the longest-lasting piping, valve lining, or O-ring seal for Cyclohexylamine, 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) | D-Severe Effect | Incompatible — Immediate Failure Risk | -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) | B1-Good | Acceptable with Routine Inspection | -60°F to 300°F (-51°C to 149°C) |
| PVC Type I (Unplasticized Polyvinyl Chloride / uPVC) | D-Severe Effect | Incompatible — Immediate Failure Risk | 32°F to 140°F (0°C to 60°C) |
| PVDF (Kynar® / Polyvinylidene Fluoride) | C-Fair | Caution: Limited / Intermittent Service Only | -40°F to 280°F (-40°C to 138°C) |
| Buna-N (Nitrile / NBR Elastomer) | C-Fair | Caution: Limited / Intermittent Service Only | -40°F to 250°F (-40°C to 121°C) |
| HDPE (High-Density Polyethylene) | B1-Good | Acceptable with Routine Inspection | -60°F to 140°F (-51°C to 60°C) |
Frequently Asked Questions (FAQ)
Is EPDM compatible with Cyclohexylamine?
EPDM is rated B1-Good (Acceptable with Routine Inspection) with Cyclohexylamine (Formula: C6H11NH2 (C6H13N), CAS: 108-91-8). Causes slight surface absorption, minor weight gain (1%–5% swell in polymers), or a low corrosion rate (<2 to 20 mpy in metals) up to 120°F (49°C). Suitable for secondary transfer lines, static gaskets, and intermittent batch service. Avoid thin-walled high-stress dynamic seals without prior coupon testing.
What is the best alternative material for handling Cyclohexylamine?
If EPDM does not meet your temperature or pressure requirements for Cyclohexylamine, the highest-rated Grade A alternatives are Stainless Steel, PTFE. Always verify O-ring elastomers and metallic fasteners separately before full-scale deployment.
Technical Engineering FAQs: Cyclohexylamine vs EPDM
Click any question below for chemical failure-mode specifics, thermal derating limits, and material selection rules: