Granular detergent compositions

Process for the production of hollow granules of detergent compositions containing sulfite which retains its content on storage under heated conditions which comprises forming an aqueous slurry containing an organic detergent and alkali metal sulfite, wherein, by weight based on the total non-volatile constituents of said slurry, the amount of detergent is from about 5% to about 40% and the amount of sulfite is from about 3% to about 70%, said slurry being at an elevated temperature of at least 90.degree.F, agitating said slurry, spraying said slurry into a hot evaporative atmosphere of about 300.degree.F to about 900.degree.F to form air-containing hollow granules of the detergent composition containing at least 3% of sulfite.