Aluminum Chlorohydrate

Aluminum Chlorohydrate

Basic Information

CAS No.: 12042-91-0
Molecular Formula: AlClH5O-
Molecular Weight: 83.47

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product description
Aluminum Chlorohydrate (ACH) is a complex inorganic salt that consists of complex basic aluminium chloride. ACH is a soluble aluminum complex. It is believed that ACH acts as an antiperspirant by precipitating inside the eccrine sweat glands to produce insoluble aluminium hydroxide, which then plugs the gland.


Chemical Properties

PropertyValue
Density1.36 [at 20°C]
Vapor pressure0.001 Pa at 20°C
SolubilitySoluble in H₂O
FormGlassy solid
ColorTransparent, transparent solid
Water solubilitySoluble in H₂O, forms slightly turbid colloidal solution [MER06]
StabilityStable. Incompatible with many metals.
InChIInChI=1S/Al.CIH.H2O.H/h;1H;1H2;/q+2;;/p-2
InChIKeyMTSHNTRJWMHCG-UHFFFAOYSA-L
SMILESAlHO
LogP-1.380 (est)
CAS database1327-41-9 (CAS DataBase Reference)
EPA chemical substance informationAluminum chloride hydroxide (1327-41-9)


Product Usage

Aluminum Chlorohydrate (ACH) is a highly concentrated inorganic polymer coagulant widely utilized in personal care and water treatment sectors. In the cosmetics and personal care industry, it is the primary active ingredient in antiperspirants and deodorants, effectively inhibiting perspiration and reducing odor by forming temporary plugs in sweat ducts. In water treatment, ACH serves as a high-performance flocculant, particularly suitable for drinking water purification and industrial effluent treatment; its high aluminum content and basicity allow for superior turbidity removal and decolorization at low dosages. Additionally, it is applied as a sizing precipitant in the paper industry and as a binder in refractory materials.

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