The proposal of a bound state uuddss as a candidate for the dark mass encourages the research on
the properties of such a state expected in the framework of QCD .
To this extent we try to get an approximate evaluation of the mass of that particle in terms of the
chromomagnetic and chromoelectric interactions between the constituents, which is applied to
the lightest ordinary hadrons and the two nonets of tetraquarks.
The way in which the constituents combine to form the singlet under color, spin and flavour, gives
an useful information on the dynamical behaviour and the stability of the uuddss particle.