Introduction Aluminum hydrochloride is an aluminum salt. It is an inorganic, water-soluble aluminum complex with widespread commercial use. It is a stable powdery solid that may be hazardous if inhaled or ingested (MSDS). It is used in most antiperspirants on the market today in the United States. In aqueous solution it polymerizes to form a series of polymers, some of which play an important role in antiperspirant activity (Pophristic et al. 2003). Bulk samples of aluminum hydrochloride, Al2(OH)5Cl2H2O - (ACH) consist of a mixture of polymers ranging from Al2 to Al200, with Al13 being the main component (Pophristic et al. 2004). Unlike deodorants, antiperspirants reduce the amount of sweat produced and are considered a drug because they alter the body's normal physiology (Flarend et al. 2000). Aluminum chlorohydrate is also used as a coagulant in water purification to remove dissolved organic matter and colloidal residues. particles. It is often used in industrial and healthcare wastewater treatment. It is also used for ink, food, metal and oily waste, phosphorus removal, color reduction, paper and pulp waste, sludge dewatering and metal precipitation (beckart.com). Aluminum hydrochloride leaves no residual color, offers excellent turbidity removal, and is available as a GRAS (generally recognized as safe) chemical (beckart.com). Since aluminum hydrochloride is one of many aluminum salts, it is important to have some general information about aluminum. Aluminum occurs naturally and makes up approximately 8% of the Earth's surface (groesbeckmedicalclinic.com). It is silver to white in color and is flexible. Aluminum is abundant in nature but has no biological function in the human body (groesbeckmed...... middle of document ......ys. Chem. 108. (2004): 113-120.Pophristic V, Venkatachalapathy SKB, Kleina ML. Structure and dynamics of the aluminum hydrochloride polymer Al13O4(OH)24(H2O)12Cl7 Phys.Chem.Chem.Phys 6. (2004):919-923.Quatrale RP, Waldman AH, Rogers JG, Felger . CB. The mechanism of the antiperspirant action of aluminum salts I. The effect of the removal of cellophane tape on eccrine sweat glands inhibited by aluminum salt Ingested aluminum additives in processed foods and alum-treated drinking water are a major risk factor for Alzheimer's disease. Current Inorganic Chemistry 2 (1) (2012): http://.t3db.org/. toxins/T3D1486 http://www.fda.gov/OHRMS/DOCKETS/98fr/03-14140.htm http://rais.ornl.gov/tox/profiles/aluminum.html http:/ /www.beckart.com /chemistry/coagulants/alchhy.php