Ammonium sulfate

Ammonium sulfate (CAS 7783-20-2) is an inorganic salt supplying both nitrogen and sulfur to crops, making it one of the most established nitrogen fertilizers in commercial agriculture. Beyond agriculture, it functions as a pH buffer, protein precipitant, and process chemical across food, industrial, and water treatment applications. It is a versatile chemical used globally.

In fertilizer production and direct soil application, it delivers readily available nitrogen and sulfur to sulfur-deficient soils, particularly for crops like canola, wheat, and corn. Food and fermentation manufacturers use it as a yeast nutrient and dough conditioner, where it supports consistent fermentation performance in baked goods and brewing processes.

In water treatment, it serves as a source of ammonia for chloramine disinfection, helping utilities maintain residual disinfectant levels across distribution networks for safety. Textile and leather processors apply it as a pH buffer in dyeing baths, improving dye uptake uniformity and process control. This ensures high-quality finishes in industrial manufacturing.

Ammonium sulfate is supplied as white crystalline granules, standard granules, and fine powder. Agricultural-grade material is available in bulk and bagged formats for large-scale use. Food-grade material is produced to FCC and USP standards. Technical and industrial grades are also commercially available for water treatment and process chemistry applications.