Description
ALUMINUM AMMONIUM SULFATE, commonly known as ammonium alum, is a chemical compound with the formula NH4Al(SO4)2. It is a white crystalline solid with various industrial and household uses. AMMONIUM ALUM is commonly used in water purification, as a mordant in dyeing textiles, and as a flame retardant in some applications. It is also used in baking powder as an acidulant and in the preparation of pickles to maintain crispness. In cosmetics, AMMONIUM ALUM is used as an astringent and antiperspirant. Additionally, it has applications in the tanning industry and as a food additive.