Does dichloromethane corrode PVDF?
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As the title suggests, is dichloromethane corrosive to PVDF? I checked some information; some say it has it, while others say it doesn’t. I’m not sure if it’s corrosive
Dichloromethane is a substance with strong ability to dissolve organic materials; it is corrosive to PVDF, polyvinylidene fluoride, so caution must be exercised when using it. Under normal circumstances, PVDF material is not recommended for use with dichloromethane.
According to corrosion data and material selection manuals, dichloromethane has a significant corrosive effect on PVDF
For dichloromethane media, PVDF belongs to the usable category at room temperature. If the device structure is relatively simple, it is more reliable to use PTFE ； Alternatively, using PCTFE material would offer better suitability compared to PVDF. If the water content in dichloromethane is extremely low, metal materials such as carbon steel or stainless steel are used.
It can be used at temperatures below 104F (40C); the data comes from TR19/2007 Chemical Resistance of Thermoplastics Piping Materials published by the Plastic Pipe Institute.