Dichloromethane (DCM) vs Viton Compatibility
Verified chemical resistance rating (Acceptable with Operating Controls), thermal boundary limits (Ambient service (72°F / 22°C) preferred; monitor wear in continuous service), and material specification guide for Viton exposed to Dichloromethane (DCM) in Halogenated Hydrocarbon / Refrigerant service.
Dichloromethane (DCM) vs Viton: B-Good
Exposing Viton to Dichloromethane (DCM) (Formula: CH2Cl2, CAS: 75-09-2) carries an official rating of B-Good (Acceptable with Operating Controls). Maximum recommended thermal operating limit: Ambient service (72°F / 22°C) preferred; monitor wear in continuous service. Best Grade A alternative materials for continuous or high-temperature service: PTFE.
Technical Specifications and Operating Parameters
| Chemical Medium | Dichloromethane (DCM) |
|---|---|
| Chemical Formula | CH2Cl2 |
| CAS Registry Number | 75-09-2 |
| Chemical Functional Class | Halogenated Hydrocarbon / Refrigerant |
| Wetted Material | Viton |
| Official Resistance Rating | B-Good (Grade B) |
| Engineering Service Verdict | Acceptable with Operating Controls |
| Max Temp and Concentration Limit | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service |
| Best Grade A Alternatives | PTFE |
| Backtest and Audit Verification | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Dichloromethane (DCM) Cross-Material Comparison Matrix (9 Materials)
Direct benchmark ratings across all 9 reference industrial materials for Dichloromethane (DCM):
| Material Name | Compatibility Rating | Service Verdict | Temperature Limit | Datasheet |
|---|---|---|---|---|
| Buna-N | D-Severe Effect | Incompatible — Immediate Failure Risk | Not recommended at any temperature or concentration | Report |
| EPDM | D-Severe Effect | Incompatible — Immediate Failure Risk | Not recommended at any temperature or concentration | Report |
| HDPE | C1-Fair | Caution: Short-Term or Emergency Use Only | Short-term exposure only; avoid continuous pressurized service | Report |
| Polypropylene | C1-Fair | Caution: Short-Term or Emergency Use Only | Short-term exposure only; avoid continuous pressurized service | 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 | B1-Good | Acceptable with Routine Inspection | Up to 120°F (49°C) with minor absorption/corrosion allowance | Report |
| Stainless Steel | B-Good | Acceptable with Operating Controls | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service | Report |
| Viton | B-Good | Acceptable with Operating Controls | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service | Report |
Chemical and Material Interaction Analysis
Engineering Compatibility Verdict
Dichloromethane (DCM) vs Viton: B – Good (Minor Effect / Conditional)
Summary Verdict: Viton® (FKM Fluoroelastomer) is rated B-Good (Acceptable with Operating Controls) when exposed to Dichloromethane (DCM) (Formula: CH2Cl2, CAS: 75-09-2). Acceptable for low-pressure piping, static seals, and scheduled-maintenance components. Implement periodic visual and dimensional inspection.
Quick Engineering Specifications
| Chemical Media | Dichloromethane (DCM) |
|---|---|
| Chemical Formula | CH2Cl2 |
| CAS Registry Number | 75-09-2 |
| Chemical Classification | Halogenated Hydrocarbon / Refrigerant |
| Wetted Material | Viton® (FKM Fluoroelastomer) (High-Performance Fluorinated Elastomer) |
| Official Resistance Rating | B – Good (Minor Effect / Conditional) (Grade B) |
| Recommended Temperature Window | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service (Material limit: -15°F to 400°F (-26°C to 204°C)) |
| Top Grade-A Alternatives | PTFE |
| Data Verification Status | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Chemical & Material Interaction Analysis
Dichloromethane (DCM) is classified as a halogenated hydrocarbon / refrigerant (high diffusivity and strong non-polar solvent swelling in polyolefins and standard rubbers). Used in vapor degreasing, refrigerant loops, chemical extraction, and polymer manufacturing. When selecting wetted components for Viton, engineers must account for both concentration-dependent chemical attack and thermal stress:
- Reaction & Failure Mechanism: Exhibits minor chemical interaction—such as slight discoloration, mild dimensional swell, or slow uniform surface etching—that does not immediately compromise structural integrity.
- Material Profile (Viton): Exceptional resistance to aliphatic and aromatic hydrocarbons, petroleum oils, concentrated mineral acids, and halogenated solvents at elevated temperatures. However, severely attacked by polar oxygenated solvents (acetone, MEK, ethyl acetate, THF), anhydrous ammonia, primary amines, and hot concentrated caustic soda via dehydrofluorination.
- Application Scope: Common wetted components include O-ring static/dynamic seals, pump diaphragms, valve seats, flange gaskets, and chemical transfer hose liners.
Cross-Material Compatibility Comparison for Dichloromethane (DCM)
To help you select the longest-lasting piping, valve lining, or O-ring seal for Dichloromethane (DCM), the table below compares Viton against 8 other common industrial engineering materials:
| Wetted Material | Compatibility Rating | Service Recommendation | Material Temp Range |
|---|---|---|---|
| Polypropylene (PP Homopolymer & Copolymer) | C1-Fair | Caution: Short-Term or Emergency Use Only | 32°F to 180°F (0°C to 82°C) |
| 316 / 304 Austenitic Stainless Steel | B-Good | Acceptable with Operating Controls | -325°F to 800°F (-198°C to 426°C) |
| Viton® (FKM Fluoroelastomer) (Current Page) | B-Good | Acceptable with Operating Controls | -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) | D-Severe Effect | Incompatible — Immediate Failure Risk | -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) | B1-Good | Acceptable with Routine Inspection | -40°F to 280°F (-40°C to 138°C) |
| Buna-N (Nitrile / NBR Elastomer) | D-Severe Effect | Incompatible — Immediate Failure Risk | -40°F to 250°F (-40°C to 121°C) |
| HDPE (High-Density Polyethylene) | C1-Fair | Caution: Short-Term or Emergency Use Only | -60°F to 140°F (-51°C to 60°C) |
Frequently Asked Questions (FAQ)
Is Viton compatible with Dichloromethane (DCM)?
Viton is rated B-Good (Acceptable with Operating Controls) with Dichloromethane (DCM) (Formula: CH2Cl2, CAS: 75-09-2). Exhibits minor chemical interaction—such as slight discoloration, mild dimensional swell, or slow uniform surface etching—that does not immediately compromise structural integrity. Acceptable for low-pressure piping, static seals, and scheduled-maintenance components. Implement periodic visual and dimensional inspection.
What is the best alternative material for handling Dichloromethane (DCM)?
If Viton does not meet your temperature or pressure requirements for Dichloromethane (DCM), the highest-rated Grade A alternatives are PTFE. Always verify O-ring elastomers and metallic fasteners separately before full-scale deployment.
Technical Engineering FAQs: Dichloromethane (DCM) vs Viton
Click any question below for chemical failure-mode specifics, thermal derating limits, and material selection rules: