SODM (powder) - Sodium. Conducts. Reacts violently with water. Combines with CHLR to make SALT.
CHLR (gas) - Chlorine. Kills stickmen. Combines with SODM to make SALT.
WTPR - Water purifier.
Combining SODM, CHLR, HYGN and OXYG will create WTPR, which reacts with WATR to make DSTW.
I think CAUS can represent chlorine.
And as for sodium, we already have RBDM which does essentially the same thing.
now think what happens if we mix RBDM with CAUS