This present article deals with the preparation of trithiocarbonate salt (1) from commercially available, water soluble, sodium salt of 3-mercapto-1-propane-sulfonic acid in presence of carbon disulfide and NaOH, which is stable intermediate and stored in solution. The salt 1 reacts with bromo compounds 2 gives unsymmetrical 3 (organic salt). The stability of 3 depends on bromo substrate and reaction conditions. In presence of phase transfer catalyst 3 gives thiol (4), without PTC at room gives symmetrical trithiocarbonate (5), and water-soluble sulfonate polymer (6) and without PTC under heating conditions disulfide (7). (scheme-1). When intermediate, trithiocarbonate sodium salt (1) reacts with primary bromide (2a-2d), secondary bromide (2e-2f) and tertiary bromide (2g) in presence of catalytic amount of phase transfer catalyst, gives unsymmetrical salt (3), which subsequently cleaved to give thiol (4a-4g).