The Aluminum Chlorohydrate complex commonly used in deodorants and antiperspirants is Al2Cl(OH)5. Aluminum is widely used in food contact articles including cans, foils and cooking utensils.

More information about aluminum.

More information about the safety of antiperspirant drug products.

Link to FDA Code of Federal Regulations for Aluminum Chlorohydrate
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...

Aluminum Chlorohydrate complexes may be used in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Directive of the European Union.
Link to the EU Cosmetics Directive:
http://ec.europa.eu/consumers/sectors/cosmetics/documents/di...

The Aluminum Chlorohydrates are complex inorganic salts that consist of aluminum and hydrogen chloride. These compounds are polymeric, bound loosely to water and include a range of aluminum to chloride ratios from 2.1-1.9 to 1 for the Chlorohydrate, from 1.25-0.9 to 1 for the Dichlorohydrate, and from 1.9-1.25 to 1 for the Sesquichlorohydrate.

Aluminum Chlorohydrate is also used as a flocculant in water purification.