Caustics / Bases Compatibility Chart
35 real rated rows across 16 media, comparing PVC, PP, PVDF, PFA, PTFE, and 316 stainless steel by concentration and temperature.
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Request a Spec Review →Caustics / Bases — 35 Real Rated Rows
| Media | Conc. | Temp | PVC | PP | PVDF | PFA | PTFE | 316SS |
|---|---|---|---|---|---|---|---|---|
| Aluminum Hydroxide | Saturated | 104°F | E | E | E | E | E | G |
| Ammonia Liquid | 100% | 104°F | C | G | E | — | E | E |
| Ammonia Liquid | 100% | 176°F | — | C | E | — | E | G |
| Ammonia Water | 10% | 104°F | E | E | E | — | — | E |
| Ammonia Water | 10% | 176°F | — | — | E | — | — | E |
| Ammonium Hydroxide | 40% | 104°F | E | E | E | E | E | E |
| Ammonium Hydroxide | 40% | 176°F | — | E | E | — | E | G |
| Barium Hydroxide | Saturated | 104°F | E | E | E | E | E | G |
| Barium Hydroxide | Saturated | 176°F | — | — | E | — | E | G |
| Butyl Amine | Saturated | 104°F | — | — | C | E | E | E |
| Butyl Amine | Saturated | 176°F | — | — | — | — | E | E |
| Calcium Hydroxide | Saturated | 104°F | E | E | E | E | E | G |
| Caustic Potash | 25% | 104°F | E | E | E | E | — | F |
| Caustic Potash | 25% | 176°F | — | E | G | — | — | F |
| Diethylamine | Pure | 104°F | — | G | F | E | E | G |
| Ethanolamine | Pure | 104°F | — | — | — | E | E | E |
| Ethanolamine | Pure | 176°F | — | — | — | E | E | E |
| Ferric Hydroxide | Saturated | 104°F | E | E | E | — | E | F |
| Ferric Hydroxide | Saturated | 176°F | — | E | E | — | E | F |
| Magnesium Hydroxide | Saturated | 104°F | E | E | E | E | E | E |
| Magnesium Hydroxide | Saturated | 176°F | — | E | E | — | E | E |
| Monoethanol Amine | — | 104°F | — | — | — | — | E | G |
| Monoethanol Amine | — | 176°F | — | — | — | — | E | G |
| Potassium Hydroxide | 25% | 104°F | E | E | E | E | E | E |
| Potassium Hydroxide | 25% | 176°F | — | E | F | — | E | E |
| Sodium Hydroxide | 50% | 104°F | E | E | G | — | E | F |
| Sodium Hydroxide | 70% | 104°F | G | G | G | — | E | C |
| Sodium Hydroxide | 30% | 104°F | E | E | E | — | E | G |
| Sodium Hydroxide | 15% | 104°F | E | E | E | E | E | E |
| Sodium Hydroxide | 50% | 176°F | — | G | C | — | E | F |
| Sodium Hydroxide | 70% | 176°F | — | G | C | — | E | C |
| Sodium Hydroxide | 30% | 176°F | — | G | F | — | E | G |
| Sodium Hydroxide | 15% | 176°F | — | G | F | — | E | E |
| Triethanolamine | — | 104°F | — | — | — | — | E | E |
| Triethanolamine | — | 176°F | — | — | — | — | E | E |
Source: Flowline chemical compatibility chart, 551 real media rows. Blank cells mean no rating was published for that combination — treat as unknown, not safe. Reference only; confirm current specifications with the manufacturer before final specification.
Frequently Asked Questions
What materials are compatible with caustics / bases?
It depends on the specific chemical, concentration, and temperature — this page carries 35 real rated rows across 16 distinct media in this family, rating PVC, PP, PVDF, PFA, PTFE, and 316 stainless steel individually. There is no single answer for the whole family.
How current is this data?
Sourced from Flowline chemical compatibility chart, 551 real media rows. Confirm current specifications with the manufacturer before final specification — chemical formulations and vendor ratings can change.
What if my exact chemical or concentration isn't listed?
Send LibertyCES the exact chemical, concentration, and operating temperature — James can confirm material compatibility even where this reference table doesn't have an exact matching row.
Confirm compatibility before you specify
Send James your exact chemical, concentration, and temperature for a confirmed material recommendation — not a guess off a chart.
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