Solvent resistance of organic membranes made of cellulose acetate

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Acids: Hydrochloric acid (5%) – Nitric acid (1%) – Sulfuric acid (5%) ++ Formic acid (5%) ++ Formic acid (100%) – Acetic acid (25%) + Citric acid ++ Bases: Sodium hydroxide (0.1N) – Sodium hydroxide (1N) – pH range: 2–9 Free chlorine: 20 ppm + 200 ppm, 35°C, 60 minutes; 0–5000 ppm, 60°C, 60 minutes -- Others: Hydrogen peroxide (1000 ppm) ++ Formaldehyde (1%) ++ Temperature: 35°C Alkanes: Hexane + Isooctane + Petroleum ether + Cyclohexane / Aromatics: -- Halogenated hydrocarbons: -- Ethers: -- Alcohols: Methanol (50%) – Ethanol (70%) – Isopropanol (100%) – Butanol (100%) – Butanol (≤10%) ++ Aprotic solvents: DMF/DMSO/NMP/HMP/DMAC -- ++——Membrane properties remain unchanged -- ——Membrane ruptures or dissolves +——Membrane properties may change slightly /——No data available 0——Significant changes occur in a short period of time