Ammonium Sulphate is mostly used as nitrogen fertilizer. It provides N for NPK. It provides an equal balance of nitrogen and sulphur, meets short term sulphur deficits of crops, pastures and other plants. Product Specification: Ammoniacal Nitrogen Cont: 21 Pct Min Sulphur Cont.: 23.5 Pct Min Moisture: 1 Pct Max Free Acidity(h2so4): 0.025 Pct Max Arshenic (As As203): 0.01 Pct Max White Crystal: 2-4 Mm Color: Whitish