I suggest sulphuric acid(SLPA), LIOH and SO2.

I have two main ideas:

Either,

•  Unlike ACID, SLPA will not react with water and instead will diffuse in it.

Or,

•  It will absorb the water and volume will be doubled and it's tmp value will decrease. (tmp is the molarity).
•  This one can make it better to play with it.

Some properties:

• SLPA and LIOH can combine to make SALT and WATR.
• When the salt water is electrolysed, it will become SLPA with low molarity and will create HYGN and SO2 gases.
• When the SLPA is electrolysed it will also create HYGN and SO2 gases, but will increase its molarity.

Reactions:

• SLPA + (any of electronics) -> BREL + heat (that would make it possible to produce BREL without EMP)
• SLPA + (metals other than GOLD and PTNM) -> SLTW + HYGN + heat
• SO2 + WATR -> SLPA
• SO2 + (metals) -> SALT

There can be even better ideas this is just the start.