SODIUM CHROMATE TETRAHYDRATE LR
Sodium chromate is the inorganic compound with the formula Na2CrO4. It exists as a yellow hygroscopic solid, which can form tetra-, hexa-, and decahydrates. It is an intermediate in the extraction of chromium from its ores.
Sodium chromate is acidified with to give sodium dichromate. 2Na2CrO4 + H2SO4 Na2Cr2O7 Sodium dichromate +Na2SO4 + H2O (iii)Conversion of sodium dichromate into potassium dichromate. Sodium dichromate is treated with KCI and the resulting solution is evaporated to get orange coloured crystals of potassium dichromate.
Sodium chromate tetrahydrate can be used as an oxidant in organic synthesis and also as a carrier electrolyte in the capillary electrophoresis.
Sodium Peroxide is a yellowish-white powder. It is used as a bleaching agent, disinfectant, laboratory chemical, and in the production of other chemicals
