At work we use;
Powder Bleach, ACTIVE INGREDIENT: Sodium Dochloroisocyanurate
and
A cleaning agent, ACTIVE INGREDIENT: Sodium Dodecylbenzene sulfonate

These two chemicals are to be used separately but we have the sudden rumour that when mixed in a mop bucket it is significantly more effective than using just the Sodium Dodecylbenzene Sulfonate. I entirely disagree, suggesting that the mixture of the two could produce a dangerous gas.

Can anyone help me to discover the outcome of mixing these two chemicals?

Thanks!