亚硒酸钠具有如下特征: Sodium selenite is the inorganic compound with the formula Na2SeO3. This salt is a colourless solid. The pentahydrate Na2SeO3(H2O)5 is the most common water-soluble selenium compound. 950 g/L (20 oC) 1.白色结晶。可含有五个结晶水,在空气中稳定,在干燥空气中可失去水分。理论含硒量45.7%。在空气中稳定,
2.在干燥空气中易风化,有剧毒!吸入或吞入时有极毒,并具有蓄积性危害