I-Sodium carbonate (Na2CO3), ubunzima bemolekyuli 105.99.Ukucoceka kweekhemikhali kungaphezulu kwe-99.2% (iqhezu lobuninzi), ebizwa ngokuba yi-soda ash, kodwa ulwahlulo lolwetyuwa, kungekhona i-alkali.Ikwaziwa njengesoda okanye uthuthu lwealkali kurhwebo lwamazwe ngamazwe.Yimathiriyeli ebalulekileyo ye-inorganic chemical ekrwada, esetyenziswa ikakhulu kwimveliso yeglasi ecaba, iimveliso zeglasi kunye ne-ceramic glazes.Ikwasetyenziswa ngokubanzi ekuhlambeni, ukungathathi hlangothi kwe-asidi kunye nokulungiswa kokutya.