SULFATHO (az lotini sulfur — sulfur), namakhoi sulfat, namakhoi kislotai sulfat N2SO4-ro guyand. Sulfatho du khel meshavand: miyona —M2SO4 va tursh (gidrosulfatho) —MNSO4 (M—metali yakvalenta).
Sulfatho moddahoi kristallii berang (agar kation berang boshad) buda, aksarashan dar ob nagz hal meshavand. Sulfathoi tursh dar holati sakht faqat baroi metallhoi faol (Na, K va gayra) hosil karda shudaand. Onho dar ob nagz hal meshavand. Sulfathoi miyonaro bo rohi ba metallho, oksidu gidrooksidi metallho, karbonati metallho va gayra tasir namudani N2SO4 va gidrosulfathoro bo rohi garm kardani Sulfathoi miyona hosil mekunand:
K2SO4 + N2SO4 = 2KNSO4
Kristallogidrathoi Sulfathoi baze metallhoi vazninro kuporosho menomand. Sulfatho dar sohahoi gunoguii sanoat va khojagii khalq istifoda meshvand. Masalan, A12(SO4)z baroirangubori mato, dar khojagii qishloq, tib, metallurgiyai ranga, sanoati charm, veterinariya va gayra.