Wopanga wa ku China Hexamethylenetetramine HMTA Urotropine Mtengo Wopikisana,
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Urotropine, yomwe imatchedwanso Hexamethylenetetramine/Hexamine, molecular formula C₆H₁₂N₄. Katundu wathu wa mafakitale ali ndi chinyezi chochepa, chiyero chapamwamba komanso magwiridwe antchito okhazikika. Amagwiritsidwa ntchito kwambiri mu phenolic resin hardener, rabara accelerator, nsalu zomaliza, zitsulo zotsutsana ndi dzimbiri komanso mankhwala. Monga opanga akatswiri aku China, timapereka zinthu zokhazikika, mtengo wopikisana komanso zikalata zonse za COA kwa ogula akunja.