Ammonium Sulphate is a kind of nitrogen fertilizer which can provide N for NPK and mostly used for agriculture. Besides providing the  element of nitrogen, it can also provide the element of sulphur for crops, pastures and other plants. Because of its fast release and quick acting, ammonium sulfate is much better than other nitrogen furtillizers such as urea, ammonium bicarbonate, ammonium chloride and ammonium nitrate.