Natria aluminia sulfato

${\displaystyle {\mathsf {Na_{2}SO_{4}+Al_{2}(SO_{4})_{3}+24H_{2}O\ {\xrightarrow {\ }}\ 2NaAl(SO_{4})_{2}\cdot 12H_{2}O}}}$

${\displaystyle {\mathsf {4NaAl(SO_{4})_{2}\ {\xrightarrow {800^{o}C}}\ 2Na_{2}SO_{4}+2Al_{2}O_{3}+6SO_{2}+3O_{2}}}}$

${\displaystyle {\mathsf {[Al(H_{2}O)_{6}]^{3+}+H_{2}O\ \rightleftarrows \ [Al(H_{2}O)_{5}(OH)]^{2+}+H_{3}O^{+}}}}$

${\displaystyle {\mathsf {2\;NaAl(SO_{4})_{2}+6\;NaHCO_{3}\ \rightleftarrows \ 4\;Na_{2}SO_{4}+2\;Al(OH)_{3}+6\;CO_{2}\uparrow }}}$