Kapangidwe ka Thupi: Sodium dithionite imagawidwa ngati chinthu choyaka moto cha Giredi 1. Imadziwikanso kuti Rongalite. M'mabizinesi, imapezeka m'mitundu iwiri: Na₂S₂O₄·2H₂O ndi Na₂S₂O₄ yopanda madzi. Yoyamba ndi kristalo woyera wabwino, pomwe yomaliza ndi ufa wachikasu wopepuka. Kuchuluka kwake ndi 2.3-2.4. Imawola ikatentha kwambiri, imasungunuka m'madzi ozizira koma imawola m'madzi otentha. Siisungunuka mu ethanol. Yankho lake lamadzi ndi losakhazikika ndipo lili ndi mphamvu zochepetsera kwambiri, zomwe zimaiika m'gulu la mphamvu zochepetsera.
Ikayikidwa mumlengalenga, imayamwa mpweya mosavuta ndipo imatulutsa okosijeni. Imayamwanso mosavuta chinyezi, zomwe zimapangitsa kutentha ndi kuwonongeka. Imatha kuyamwa mpweya kuchokera mumlengalenga, kupanga ziphuphu, ndi kutulutsa fungo loipa la wowawasa.
Na₂S₂O₄ + 2H₂O + O₂ → 2NaHSO₄ + 2[H]
Kutentha kapena kukhudzana ndi lawi lotseguka kungayambitse kuyaka. Kutentha kwake koyatsa kokha ndi 250°C. Kukhudzana ndi madzi kumatha kutulutsa kutentha kwakukulu ndi mpweya wa haidrojeni ndi hydrogen sulfide woyaka, zomwe zimapangitsa kuyaka mwamphamvu. Kukhudzana ndi oxidizers, madzi ochepa, kapena kuyamwa kwa chinyezi chomwe chimapanga kutentha kungayambitse utsi wachikasu, kuyaka, kapena kuphulika.
Timapereka zinthu zathu zopangira sodium dithionite kuti titsimikizire kuti katundu wathu watumizidwa bwino kuchokera ku gwero, popanda kuda nkhawa ndi nthawi yotumizira. Dinani apa kuti mupeze mitengo yopikisana.