Preparation of 2,4,6-trithione-1,3,5-triazine trisodium salt

2,4,6-trithione-1,3,5-triazine and its trisodium salt were synthesized from cyanuric chloride by sulfhylization with sodium sulfide at 60~70 ℃,maintaining the pH=9 by addition of NaOH aqueous solution.The yield of 2,4,6-trithione1,3,5triazine is ≥90%,and its structure was identified by IR spectrum and the IR spectrum of 2,4,6trithione1,3,5triazine was consistent with the IR spectrum of Fluka product.