1 It is aluminum potassium sulfate. 2  This is the type of alum that you find in the grocery store for pickling and in baking powder. 3  It is also used in leather tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof textiles. 4  It's chemical formula is KAl(SO 4) 2. It is also used in leather tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof textiles. 2  It's chemical formula is KAl(SO 4) 2. 3  Soda Alum. 4  Soda alum has the formula NaAl(SO 4) 2 Â·12H 2 O. It is used in baking powder and as an acidulent in food.
Fruits and Vegetables. The Aztec people grew a variety of fruits and vegetables, which provided them with key vitamins and minerals that they needed to support their active lives and their good health. Among the most prominent fruits and vegetables were chili peppers, sweet potatoes, tomatoes, onions and avocados.
These civilizations developed agriculture as well, breeding maize (corn) from having ears 2â5 cm in length to perhaps 10â15 cm in length. Potatoes, tomatoes, pumpkins, beans, avocados, and chocolate are now the most popular of the pre-Columbian agricultural products.