... 87 (1968) RECUEIL 277 ... 4.38. Reactiorr of' 3-methyC5,6-dihydrothia~ol~~ 2.34 ithiazoliiim ( VIIIh) Perchlorate with Sodium Hydroxidc One gram of the perchlorate of Vllb was dissolved in 30 rnl of water and 20 rnl of 10% sodium hydroxide solution added. ...