Sodium Aluminum Sulfate
What is Sodium Aluminum Sulfate?
Sodium Aluminum Sulfate (SAS) is a colorless crystal with an astringent taste and a melting point of 61°C; soluble in water; used as a mordant and for waterproofing textiles, as a food additive, and for matches, tanning, ceramics, engraving, and water purification. 
Also known as porous alum; soda alum; sodium aluminum sulfate. 
Sodium Aluminum Sulfate can be in a variety of products that contain baking powder.
Aluminum toxicity is a concern for Alzheimer's Disease.
"Aluminum toxicity and its symptoms mimic those of Alzheimer's disease and osteoporosis. Colic, rickets, gastrointestinal problems, interference with the metabolism of calcium, extreme nervousness, anemia, headaches, decreased liver and kidney function, memory loss, speech problems, softening of the bones, and aching muscles."