Aluminum sesquichlorohydrate

Aluminum sesquichlorohydrate (CAS 11097-68-0) is an inorganic aluminum salt used primarily as an antiperspirant active and as a coagulant in water treatment. Also marketed as Aloxicoll and Astringen.

Where is Aluminum sesquichlorohydrate used?

• Antiperspirants and deodorants: active ingredient that temporarily blocks eccrine sweat gland ducts, reducing perspiration
• Roll-ons and sticks
• Aerosol formats requiring moderately high aluminum content without harshness
• Water treatment: coagulant that destabilizes suspended particles and colloidal matter, supporting clarification and sedimentation
• pH buffering in treatment systems where controlled aluminum ion release is advantageous
• It occupies a mid-range position in the aluminum chlorohydrate family.

Good to know: Cosmetic-grade material is held to tighter purity standards than technical-grade product intended for water treatment; buyers should confirm grade suitability.