Several experiments were accomplished to find out the optimum efficient content of ammonium sulfate applied as a flame-retardant into the cotton fabric.
The tabulated results revealed that a bath of 0.4 molar solution of the afore-mentioned salt caused a fairly sufficient addition to impart flame-retardancy for cotton fabric. 
It can be concluded from the subsequent data that about 10.55–13.62% addition of (NH4)2SO4 per 100 g fabric is around the optimum add-on value to donate flame-retardancy to a cotton fabric.
The individual TG slopes and the comparative TG curves of untreated cotton and the treated one with optimum addition of the salt and also for the pure ammonium sulfate are shown in Figs 2–5, respectively.