Arochlor 1248 vs Buna-N 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 Buna-N exposed to Arochlor 1248 in Industrial Process Chemical service.
Arochlor 1248 vs Buna-N: B-Good
Exposing Buna-N to Arochlor 1248 (Formula: C12H6Cl4 (Polychlorinated Biphenyl), CAS: 12672-29-6) 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: Viton, PTFE, PVDF.
Technical Specifications and Operating Parameters
| Chemical Medium | Arochlor 1248 |
|---|---|
| Chemical Formula | C12H6Cl4 (Polychlorinated Biphenyl) |
| CAS Registry Number | 12672-29-6 |
| Chemical Functional Class | Industrial Process Chemical |
| Wetted Material | Buna-N |
| 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 | Viton, PTFE, PVDF |
| Backtest and Audit Verification | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Arochlor 1248 Cross-Material Comparison Matrix (9 Materials)
Direct benchmark ratings across all 9 reference industrial materials for Arochlor 1248:
| Material Name | Compatibility Rating | Service Verdict | Temperature Limit | Datasheet |
|---|---|---|---|---|
| Buna-N | B-Good | Acceptable with Operating Controls | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service | Report |
| EPDM | B-Good | Acceptable with Operating Controls | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service | Report |
| HDPE | D-Severe Effect | Incompatible — Immediate Failure Risk | Not recommended at any temperature or concentration | Report |
| Polypropylene | D-Severe Effect | Incompatible — Immediate Failure Risk | Not recommended at any temperature or concentration | 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 | B-Good | Acceptable with Operating Controls | Ambient service (72°F / 22°C) preferred; monitor wear in continuous service | 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
Arochlor 1248 vs Buna-N: B – Good (Minor Effect / Conditional)
Summary Verdict: Buna-N (Nitrile / NBR Elastomer) is rated B-Good (Acceptable with Operating Controls) when exposed to Arochlor 1248 (Formula: C12H6Cl4 (Polychlorinated Biphenyl), CAS: 12672-29-6). Acceptable for low-pressure piping, static seals, and scheduled-maintenance components. Implement periodic visual and dimensional inspection.
Quick Engineering Specifications
| Chemical Media | Arochlor 1248 |
|---|---|
| Chemical Formula | C12H6Cl4 (Polychlorinated Biphenyl) |
| CAS Registry Number | 12672-29-6 |
| Chemical Classification | Industrial Process Chemical |
| Wetted Material | Buna-N (Nitrile / NBR Elastomer) (Acrylonitrile-Butadiene Copolymer 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: -40°F to 250°F (-40°C to 121°C)) |
| Top Grade-A Alternatives | Viton, PTFE, PVDF |
| Data Verification Status | Verified against Cole-Parmer, ISM, Graco & CP Lab Safety industrial chemical resistance charts. |
Chemical & Material Interaction Analysis
Arochlor 1248 is classified as an industrial process chemical (requires verification of concentration and thermal operating envelopes prior to deployment). Used in chemical manufacturing, fluid transfer, and industrial storage systems. When selecting wetted components for Buna-N, 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 (Buna-N): Workhorse elastomer for petroleum-based hydraulic oils, motor oils, diesel, gasoline, aliphatic hydrocarbons (hexane, heptane), water, and salt brines. However, poor resistance to ozone/weathering and rapidly destroyed by ketones, esters, chlorinated hydrocarbons, aromatic solvents, and strong oxidizing acids.
- Application Scope: Common wetted components include hydraulic O-rings, fuel transfer hoses, rotary shaft seals, oil gaskets, and general-purpose industrial pump elastomers.
Cross-Material Compatibility Comparison for Arochlor 1248
To help you select the longest-lasting piping, valve lining, or O-ring seal for Arochlor 1248, the table below compares Buna-N against 8 other common industrial engineering materials:
| Wetted Material | Compatibility Rating | Service Recommendation | Material Temp Range |
|---|---|---|---|
| Polypropylene (PP Homopolymer & Copolymer) | D-Severe Effect | Incompatible — Immediate Failure Risk | 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) | 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) | B-Good | Acceptable with Operating Controls | -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) (Current Page) | B-Good | Acceptable with Operating Controls | -40°F to 250°F (-40°C to 121°C) |
| HDPE (High-Density Polyethylene) | D-Severe Effect | Incompatible — Immediate Failure Risk | -60°F to 140°F (-51°C to 60°C) |
Frequently Asked Questions (FAQ)
Is Buna-N compatible with Arochlor 1248?
Buna-N is rated B-Good (Acceptable with Operating Controls) with Arochlor 1248 (Formula: C12H6Cl4 (Polychlorinated Biphenyl), CAS: 12672-29-6). 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 Arochlor 1248?
If Buna-N does not meet your temperature or pressure requirements for Arochlor 1248, the highest-rated Grade A alternatives are Viton, PTFE, PVDF. Always verify O-ring elastomers and metallic fasteners separately before full-scale deployment.
Technical Engineering FAQs: Arochlor 1248 vs Buna-N
Click any question below for chemical failure-mode specifics, thermal derating limits, and material selection rules: