For my project i would like to waterproof (or at least moistureproof) a PCB. The PCB is to be used without housing and during operation/handling there will be some skin contact (mainly hands).
Now i have read about different kinds of conformal coating like silicone or acrylic. I would like to go with silicone because most other coatings (including nail polish) tend to become brittle and chip off. Also i don't want to use things like resin because it is more difficult to apply and i may need to rework the PCB at some point.
The silicone conformal coatings i have found seem to do exactly what i need but i am concerned about the health of the users of the coated PCB (as well as my own health). I had a look at the safety data sheets of two silicone conformal coatings:
- MG Chemicals 422B: https://docs.rs-online.com/7be1/0900766b814ccb6b.pdf (productpage german: https://ch.rs-online.com/web/p/schutzlacke/1462878/)
- Electrolube FSC15ML: https://docs.rs-online.com/1c83/0900766b80b7e787.pdf (productpage german: https://ch.rs-online.com/web/p/schutzlacke/0535525/)
They seem to list quite some health risks (especially the 422B one).
- Are these risks mainly due to the solvents?
- Will the dangers go away/become negligible once the coating is cured?
- Are there any alternatives that i don't know about?
- Is there a better place to ask this question? If yes, where?