Backtested Material Engineering Datasheet
Water, Deionized vs Polypropylene Compatibility
Verified chemical resistance rating (Safe for Continuous Ambient Service), thermal boundary limits (Verified up to 72°F (22°C); conduct thermal de-rating above 100°F (38°C)), and material specification guide for Polypropylene exposed to Water, Deionized in Food, Beverage, Natural Oil & Aqueous Media service.
Official Resistance Rating
Grade A
A2-Excellent
Safe for Continuous Ambient Service
Polypropylene
A2-Excellent
Engineering Verdict — Safe for Continuous Ambient Service
A2-Excellent
Water, Deionized vs Polypropylene: A2-Excellent
Exposing Polypropylene to Water, Deionized (Formula: H2O (High-Purity Deionized), CAS: 7732-18-5) carries an official rating of A2-Excellent (Safe for Continuous Ambient Service). Maximum recommended thermal operating limit: Verified up to 72°F (22°C); conduct thermal de-rating above 100°F (38°C). Best Grade A alternative materials for continuous or high-temperature service: Stainless Steel, Viton, PTFE, EPDM.
Technical Specifications and Operating Parameters
| Chemical Medium | Water, Deionized |
|---|---|
| Chemical Formula | H2O (High-Purity Deionized) |
| CAS Registry Number | 7732-18-5 |
| Chemical Functional Class | Food, Beverage, Natural Oil & Aqueous Media |
| Wetted Material | Polypropylene |
| Official Resistance Rating | A2-Excellent (Grade A) |
| Engineering Service Verdict | Safe for Continuous Ambient Service |
| Max Temp and Concentration Limit | Verified up to 72°F (22°C); conduct thermal de-rating above 100°F (38°C) |
| Best Grade A Alternatives | Stainless Steel, Viton, PTFE, EPDM |
| Backtest and Audit Verification | Verified against Cole-Parmer, ISM & Graco industrial chemical resistance charts. |
Water, Deionized Cross-Material Comparison Matrix (9 Materials)
Direct benchmark ratings across all 9 reference industrial materials for Water, Deionized:
Polypropylene
A2-Excellent
316 Stainless Steel
A1-Excellent
Viton (FKM)
A1-Excellent
PTFE (Teflon)
A-Excellent
EPDM
A-Excellent
PVC Type I
A-Excellent
PVDF (Kynar)
A-Excellent
Buna-N (Nitrile)
A-Excellent
HDPE
A-Excellent
| 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 | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| HDPE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Polypropylene | A2-Excellent | Safe for Continuous Ambient Service | Verified up to 72°F (22°C); conduct thermal de-rating above 100°F (38°C) | Report |
| PTFE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVC | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVDF | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Stainless Steel | A1-Excellent | Safe for Continuous Industrial Service | Up to 120°F (49°C) verified; up to material thermal limit in non-pressurized service | Report |
| Viton | A1-Excellent | Safe for Continuous Industrial Service | Up to 120°F (49°C) verified; up to material thermal limit in non-pressurized service | Report |
| Buna-N | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| EPDM | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| HDPE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Polypropylene | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PTFE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVC | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | 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 |
| Buna-N | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| EPDM | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| HDPE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Polypropylene | A2-Excellent | Safe for Continuous Ambient Service | Verified up to 72°F (22°C); conduct thermal de-rating above 100°F (38°C) | Report |
| PTFE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVC | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVDF | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Stainless Steel | A1-Excellent | Safe for Continuous Industrial Service | Up to 120°F (49°C) verified; up to material thermal limit in non-pressurized service | Report |
| Viton | A1-Excellent | Safe for Continuous Industrial Service | Up to 120°F (49°C) verified; up to material thermal limit in non-pressurized service | Report |
| Buna-N | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| EPDM | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| HDPE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Polypropylene | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PTFE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVC | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | 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 |
| Buna-N | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| EPDM | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| HDPE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Polypropylene | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PTFE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVC | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | 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 |
| Buna-N | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| EPDM | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| HDPE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| Polypropylene | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PTFE | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | Report |
| PVC | A-Excellent | Safe for Continuous Industrial Service | Ambient to elevated operating temperatures within standard material limits | 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
Water, Deionized vs Polypropylene: A2 – Excellent (No Effect up to 72°F / 22°C)
Summary Verdict: Polypropylene (PP Homopolymer & Copolymer) is rated A2-Excellent (Safe for Continuous Ambient Service) when exposed to Water, Deionized (Formula: H2O (High-Purity Deionized), CAS: 7732-18-5). Recommended for ambient storage tanks, transfer lines, and seals. If process temperatures exceed 100°F (38°C), verify pressure de-rating factors.
Quick Engineering Specifications
| Chemical Media | Water, Deionized |
|---|---|
| Chemical Formula | H2O (High-Purity Deionized) |
| CAS Registry Number | 7732-18-5 |
| Chemical Classification | Food, Beverage, Natural Oil & Aqueous Media |
| Wetted Material | Polypropylene (PP Homopolymer & Copolymer) (Semi-Crystalline Polyolefin Thermoplastic) |
| Official Resistance Rating | A2 – Excellent (No Effect up to 72°F / 22°C) (Grade A) |
| Recommended Temperature Window | Verified up to 72°F (22°C); conduct thermal de-rating above 100°F (38°C) (Material limit: 32°F to 180°F (0°C to 82°C)) |
| Top Grade-A Alternatives | Stainless Steel, Viton, PTFE, EPDM |
| Data Verification Status | Verified against Cole-Parmer, ISM & Graco industrial chemical resistance charts. |
Chemical & Material Interaction Analysis
Water, Deionized is classified as a food, beverage, natural oil & aqueous media (requires FDA/sanitary-grade material stability and resistance to mild organic acids or salts). Used in sanitary food & beverage processing, agricultural storage, and utility water systems. When selecting wetted components for Polypropylene, engineers must account for both concentration-dependent chemical attack and thermal stress:
- Reaction & Failure Mechanism: Exhibits no chemical degradation or structural loss at ambient room temperatures (72°F / 22°C), though elevated temperatures may accelerate minor permeation.
- Material Profile (Polypropylene): Broad resistance to aqueous acids, caustics, plating baths, and inorganic salt solutions without stress-corrosion cracking. However, susceptible to oxidative chain scission in strong oxidizing acids (fuming nitric/oleum) and rapid swelling/softening in chlorinated or aromatic hydrocarbons.
- Application Scope: Common wetted components include bulk chemical storage tanks, AODD pump manifolds, Schedule 80 piping, filter housings, and laboratory labware.
Cross-Material Compatibility Comparison for Water, Deionized
To help you select the longest-lasting piping, valve lining, or O-ring seal for Water, Deionized, the table below compares Polypropylene against 8 other common industrial engineering materials:
| Wetted Material | Compatibility Rating | Service Recommendation | Material Temp Range |
|---|---|---|---|
| Polypropylene (PP Homopolymer & Copolymer) (Current Page) | A2-Excellent | Safe for Continuous Ambient Service | 32°F to 180°F (0°C to 82°C) |
| 316 / 304 Austenitic Stainless Steel | A1-Excellent | Safe for Continuous Industrial Service | -325°F to 800°F (-198°C to 426°C) |
| Viton® (FKM Fluoroelastomer) | A1-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) | A-Excellent | Safe for Continuous Industrial Service | -60°F to 300°F (-51°C to 149°C) |
| PVC Type I (Unplasticized Polyvinyl Chloride / uPVC) | A-Excellent | Safe for Continuous Industrial Service | 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) | A-Excellent | Safe for Continuous Industrial Service | -60°F to 140°F (-51°C to 60°C) |
Frequently Asked Questions (FAQ)
Is Polypropylene compatible with Water, Deionized?
Polypropylene is rated A2-Excellent (Safe for Continuous Ambient Service) with Water, Deionized (Formula: H2O (High-Purity Deionized), CAS: 7732-18-5). Exhibits no chemical degradation or structural loss at ambient room temperatures (72°F / 22°C), though elevated temperatures may accelerate minor permeation. Recommended for ambient storage tanks, transfer lines, and seals. If process temperatures exceed 100°F (38°C), verify pressure de-rating factors.
What is the best alternative material for handling Water, Deionized?
If Polypropylene does not meet your temperature or pressure requirements for Water, Deionized, the highest-rated Grade A alternatives are Stainless Steel, Viton, PTFE, EPDM. Always verify O-ring elastomers and metallic fasteners separately before full-scale deployment.
Technical Engineering FAQs: Water, Deionized vs Polypropylene
Click any question below for chemical failure-mode specifics, thermal derating limits, and material selection rules:
Can Polypropylene be specified for Water, Deionized process piping, valves, or gaskets?
Yes. Because Polypropylene achieves a Grade A (A2-Excellent) rating with Water, Deionized (Safe for Continuous Ambient Service), it is approved for continuous-duty wetted components including process piping, storage tanks, valve bodies, and seals within the recommended operating window (Verified up to 72°F (22°C); conduct thermal de-rating above 100°F (38°C)).
How do all 9 reference materials compare for Water, Deionized (CAS 7732-18-5)?
For Water, Deionized (H2O (High-Purity Deionized), Food, Beverage, Natural Oil & Aqueous Media), our cross-material compatibility matrix establishes the following ratings across all 9 engineering materials:
Polypropylene: A2-Excellent |
316 Stainless Steel: A1-Excellent |
PTFE (Teflon): A-Excellent |
PVDF (Kynar): A-Excellent |
PVC Type I: A-Excellent |
HDPE: A-Excellent |
Viton (FKM): A1-Excellent |
EPDM: A-Excellent |
Buna-N (Nitrile): A-Excellent.