Technology Process of POTASSIUM PENTASULFIDE)
There total 17 articles about POTASSIUM PENTASULFIDE) which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
In
ethanol;
react. with alcoholic KHS-soln.;; violent generation of H2S, deposition of crystalline K2S5;;
- Guidance literature:
-
With
hydrogen sulfide;
In
water;
byproducts: Cr(OH)3; introduction of H2S into a 2% soln. of K2CrO4, complete react. after 16 hours, discolouration, warming, no further products like sulfate or polythionate (besides sulfite) obtained;; heterogenous product mixture from Cr(OH)3 and S as pptn. obtained, K2S, K2S5, K2S2O3 and colloidal S not isolated;;
- Guidance literature:
-
With
hydrogen sulfide;
In
water;
byproducts: Cr(OH)3, Cr-thiosulfate; passing a slow H2S-stream through a 5% soln. of K2Cr2O7 at room temp., mechanism discussed;; brown pptn., after 4 hours green pptn. of Cr(OH)3, Cr-thiosulfate and S, filtrate contains K2S2O3 and K2S3 (at 90°C), below a critical value of OH(1-)-concn. sulfate is formed;;
