Mushonga wekuderedza (Rongalite)
Zita reKemikari: Sodium hydrosulfite
Zvichienzaniswa nezvinhu zvinooxidisa, Rongalite inokonzera kukuvara kushoma kumachira. Inogona kushandiswa pamachira akagadzirwa neshinda dzakasiyana siyana pasina kukuvadza, ndosaka ichinzi "Rongalite" (zvichireva kuti "hupfu hwakachengeteka" muchiChinese). Sodium hydrosulfite chinhu chejecha jena kana yero yakapfava ine hupfu hwe300°C (kuora) uye tembiricha yekupisa ye250°C. Hainyungudike muethanol asi inonyungudika mu sodium hydroxide solution. Kana yasangana nemvura, inopindirana nesimba uye inotsva.
Kudzora kwedu mhando ye sodium hydrosulfite kwakanyanya kuomarara, boka rega rega richiongororwa nefekitori uye kuongororwa kwehunyanzvi hweSGS, zvichiita kuti hunhu hwacho hugone kugara kwenguva refu. Dzvanya apa kuti uwane mutengo wakaderedzwa mutengo.