Aluminum sulfate octadecahydrate

十八水合硫酸铝

Also known as: Aluminium sulfate octadecahydrate, Aluminum sulfate hydrate (2:3:18), Dialuminum trisulfate octadecahydrate, Cake alum, Patent alum

Aluminum sulfate octadecahydrate (CAS 7784-31-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H36Al2O30S3 and a molecular weight of 666.426 g/mol. It is also known as Aluminium sulfate octadecahydrate, Aluminum sulfate hydrate (2:3:18) and Dialuminum trisulfate octadecahydrate. Key properties include a melting point of 86 °C, a boiling point of 330ºC at 760 mmHg and a density of 1,69 g/cm3. It is classified under GHS with signal word Danger and hazard statements H290 and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

7784-31-8

Jingsj CID

J-13701-2

Molecular Formula

H₃₆Al₂O₃₀S₃

Chinese Name

十八水合硫酸铝

Molecular Weight

666.426 g/mol

Category

Inorganic Chemicals

Last updated

8/21/2026