Sodium Dichloroisocyanuric Acid:
Bluewater Stabilised Pool Chlorine
is a granular sodium dichloroisocyanurate formulation used for routine sanitising of spa and swimming pools. Stabilised pool chlorine is more stable than granular chlorine, and is not as susceptible to degradation by sunlight.
The TRI-chlor compound is similar and is used more than the DI-chlor in this area.
Both are used for pool use, as well as water purification.. So is plain bleach (Calcium hypochlorite).
In any case I'd rinse. My tap water is chlorinated and like many others I use bottled or RO water to brew.
From what Mr. Talley says it seems to be OK... I'd still rinse after soaing anythng in a chlorine based product... But that's just me.