ALUMINUM CHLOROHYDRATE- ▸ Water treatment: Coagulant/flocculant for water purification.
- ▸ Antiperspirant: Astringent ingredient in personal-care formulations.
- ▸ Pulp & paper: Processing aid in paper and board manufacture.
- ▸ Leather processing: Tanning/processing aid.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Aluminum chlorohydrate (CAS 12042-91-0) is a basic aluminum chloride (aluminum chloride hydroxide) complex. It is used as a coagulant/flocculant in water purification and as an astringent active in antiperspirant formulations, with additional use in leather, paper, and pulp processing.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 234-933-1
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Phosphorus / Phosphate Removal (Nutrient Compliance) (Water Treatment)
- Antiperspirant Actives & Skin-Compatible Bases (Beauty & Personal Care)
Frequently Asked Questions
What is aluminum chlorohydrate (ACH) used for?
Aluminum chlorohydrate (CAS 12042-91-0) is a basic aluminum chloride complex used primarily as a coagulant/flocculant in water purification. It also serves as a processing aid in pulp, paper, and leather, and as an astringent active in personal-care formulations.
What is the difference between aluminum chlorohydrate and aluminum sesquichlorohydrate?
Both are basic aluminum chlorides differing in their aluminum-to-chloride ratio (basicity): sesquichlorohydrate carries a higher chloride content than standard chlorohydrate. The distinction affects coagulation behavior and formulation properties; specify which you require so we quote the correct material.
What is the CAS number for aluminum chlorohydrate?
The CAS number is 12042-91-0. It is an aluminum chloride hydroxide complex; confirm the exact assay and basicity needed when requesting a quote and Certificate of Analysis.
How is aluminum chlorohydrate used in water treatment?
It acts as a coagulant/flocculant, neutralizing suspended-particle charge so solids aggregate and settle in potable and process-water clarification. It is valued for low residual aluminum carryover relative to some alternative coagulants.
Where can I buy aluminum chlorohydrate in bulk?
RawSource distributes aluminum chlorohydrate in bulk to manufacturers and water-treatment operators, supplied in drums, totes, and IBCs depending on solution or solid form. Request a bulk quote with your volume, grade, and destination; we provide CoA and SDS.
What is the REACH and TSCA regulatory status of Aluminum Chlorohydrate (ACH)?
Aluminum Chlorohydrate (ACH) (CAS 12042-91-0) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 234-933-1).