At a glance Based on the row for aqueous, 20 °C.
Rated A, very good resistance PTFE , HDPE , PP , PVDF , PVC Rigid , EPDM , Viton (FPM) , NBR , SS 316 , SS 304 , LDPE , FEP , ECTFE/ETFE , Nylon (PA) , Acetal (POM) , Polycarbonate , Silicone , PVC Flexible , Polystyrene , Polysulfone , PETG , PMP , SAN (23) Rated B, good resistance none (0) Rated C, limited resistance Aluminium (1) Rated D, not resistant none (0) Rated lower at 50 °C than at 20 °C SS 316 (A → B), SS 304 (A → B), Aluminium (C → D), Acetal (POM) (A → B) Based on the row for aqueous, 20 °C.
Rating profile by material family Sodium Chloride: Rating profile by material family Thermoplastics: 13 A. Fluoropolymers: 4 A. Elastomers: 4 A. Metals: 2 A, 1 C. Thermoplastics (13) Thermoplastics: 13 × A, very good resistance (HDPE, LDPE, PP, PVC Rigid, PVC Flexible, PMP, Polystyrene, SAN, Polycarbonate, PETG, Acetal (POM), Nylon (PA), Polysulfone) A 13 Fluoropolymers (4) Fluoropolymers: 4 × A, very good resistance (PTFE, FEP, PVDF, ECTFE/ETFE) A 4 Elastomers (4) Elastomers: 4 × A, very good resistance (EPDM, Viton (FPM), NBR, Silicone) A 4 Metals (3) Metals: 2 × A, very good resistance (SS 316, SS 304) A 2 Metals: 1 × C, limited resistance (Aluminium) C 1
Number of materials in each family with each rating at 20 °C. Effect of temperature, 20 °C to 50 °C Sodium Chloride: Effect of temperature, 20 °C to 50 °C Acetal (POM) A → B; SS 316 A → B; SS 304 A → B; Aluminium C → D. A B C D Acetal (POM): A at 20 °C, B at 50 °C Acetal (POM) SS 316: A at 20 °C, B at 50 °C SS 316 SS 304: A at 20 °C, B at 50 °C SS 304 Aluminium: C at 20 °C, D at 50 °C Aluminium
Materials whose rating differs between 20 °C and 50 °C. Materials not shown keep their rating or have no 50 °C value. Substance CAS number 7647-14-5 Formula NaCl Concentrations listed aqueous; any concentration Also listed as Table Salt (Sodium Chloride) Name in the source (German) Natriumchlorid Rating by concentration Sodium Chloride: Rating by concentration HDPE: aqueous A, any concentration A. LDPE: aqueous A, any concentration A. PP: aqueous A, any concentration A. PVC Rigid: aqueous A, any concentration A→C. PVC Flexible: aqueous A, any concentration A→C. PMP: aqueous A, any concentration A. Polystyrene: aqueous A, any concentration A. SAN: aqueous A, any concentration A. Polycarbonate: aqueous A, any concentration A. PETG: aqueous A, any concentration A. Acetal (POM): aqueous A→B, any concentration A→B. Nylon (PA): aqueous A, any concentration A. Polysulfone: aqueous A, any concentration A. PTFE: aqueous A, any concentration A. FEP: aqueous A, any concentration A. PVDF: aqueous A, any concentration A. ECTFE/ETFE: aqueous A, any concentration A. EPDM: aqueous A, any concentration A. Viton (FPM): aqueous A, any concentration A. NBR: aqueous A, any concentration A. Silicone: aqueous A, any concentration –. SS 316: aqueous A→B, any concentration A→B. SS 304: aqueous A→B, any concentration A→B. Aluminium: aqueous C→D, any concentration C→D. aqueous any concentration THERMOPLASTICS HDPE HDPE, aqueous: A at 20 °C, A at 50 °C A HDPE, any concentration: A at 20 °C, A at 50 °C A LDPE LDPE, aqueous: A at 20 °C, A at 50 °C A LDPE, any concentration: A at 20 °C, A at 50 °C A PP PP, aqueous: A at 20 °C, A at 50 °C A PP, any concentration: A at 20 °C, A at 50 °C A PVC Rigid PVC Rigid, aqueous: A at 20 °C, A at 50 °C A PVC Rigid, any concentration: A at 20 °C, C at 50 °C A→C PVC Flexible PVC Flexible, aqueous: A at 20 °C, A at 50 °C A PVC Flexible, any concentration: A at 20 °C, C at 50 °C A→C PMP PMP, aqueous: A at 20 °C, A at 50 °C A PMP, any concentration: A at 20 °C A Polystyrene Polystyrene, aqueous: A at 20 °C, A at 50 °C A Polystyrene, any concentration: A at 20 °C, A at 50 °C A SAN SAN, aqueous: A at 20 °C, A at 50 °C A SAN, any concentration: A at 20 °C, A at 50 °C A Polycarbonate Polycarbonate, aqueous: A at 20 °C, A at 50 °C A Polycarbonate, any concentration: A at 20 °C, A at 50 °C A PETG PETG, aqueous: A at 20 °C, A at 50 °C A PETG, any concentration: A at 20 °C, A at 50 °C A Acetal (POM) Acetal (POM), aqueous: A at 20 °C, B at 50 °C A→B Acetal (POM), any concentration: A at 20 °C, B at 50 °C A→B Nylon (PA) Nylon (PA), aqueous: A at 20 °C, A at 50 °C A Nylon (PA), any concentration: A at 20 °C A Polysulfone Polysulfone, aqueous: A at 20 °C, A at 50 °C A Polysulfone, any concentration: A at 20 °C A FLUOROPOLYMERS PTFE PTFE, aqueous: A at 20 °C, A at 50 °C A PTFE, any concentration: A at 20 °C, A at 50 °C A FEP FEP, aqueous: A at 20 °C, A at 50 °C A FEP, any concentration: A at 20 °C, A at 50 °C A PVDF PVDF, aqueous: A at 20 °C, A at 50 °C A PVDF, any concentration: A at 20 °C, A at 50 °C A ECTFE/ETFE ECTFE/ETFE, aqueous: A at 20 °C, A at 50 °C A ECTFE/ETFE, any concentration: A at 20 °C, A at 50 °C A ELASTOMERS EPDM EPDM, aqueous: A at 20 °C, A at 50 °C A EPDM, any concentration: A at 20 °C, A at 50 °C A Viton (FPM) Viton (FPM), aqueous: A at 20 °C, A at 50 °C A Viton (FPM), any concentration: A at 20 °C, A at 50 °C A NBR NBR, aqueous: A at 20 °C, A at 50 °C A NBR, any concentration: A at 20 °C, A at 50 °C A Silicone Silicone, aqueous: A at 20 °C, A at 50 °C A Silicone, any concentration: no data – METALS SS 316 SS 316, aqueous: A at 20 °C, B at 50 °C A→B SS 316, any concentration: A at 20 °C, B at 50 °C A→B SS 304 SS 304, aqueous: A at 20 °C, B at 50 °C A→B SS 304, any concentration: A at 20 °C, B at 50 °C A→B Aluminium Aluminium, aqueous: C at 20 °C, D at 50 °C C→D Aluminium, any concentration: C at 20 °C, D at 50 °C C→D
Each cell shows the rating at 20 °C. Where the rating at 50 °C differs, it follows the arrow. * marks an estimate in the source. Show as a table Resistance table: Sodium Chloride, aqueous Resistance table: Sodium Chloride, any concentration Not rated in the source, so not in the table: Silicone
Rating scale A very good resistanceB good resistanceC limited resistanceD not resistant– no dataK no general statement possibleA rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.
Frequently Asked Questions Which materials resist Sodium Chloride at high concentrations? The materials with an A rating (resistant) for Sodium Chloride at 20 °C are: PTFE, HDPE, PP, PVDF, PVC Rigid, EPDM, Viton (FPM), NBR. These can generally be used in direct contact.
Does temperature affect chemical resistance to Sodium Chloride? Yes. 4 of 24 tested materials show a worse rating at 50 °C than at 20 °C for Sodium Chloride. Materials affected include: SS 316, SS 304, Aluminium, Acetal (POM).
Is PTFE safe for Sodium Chloride? PTFE is rated A for Sodium Chloride at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.
Does concentration affect chemical resistance to Sodium Chloride? Yes. Sodium Chloride is tested at 2 concentrations (aqueous, any concentration). Some materials change their rating depending on the concentration.
About this data The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.
A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.
Chemicals with a similar resistance profile Same 20 °C rating on the share of materials shown.
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