The Aluminum sulfate octadecahydrate, with the CAS registry number 7784-31-8 and EINECS registry number 233-135-0, belongs to the following product categories: ACS GradeChemical Synthesis; Aluminum; Catalysis and Inorganic Chemistry; Essential Chemicals; Routine Reagents. It is a kind of white crystalline powder and chunks, and can soluble in water. The molecular formula of this chemical is Al₂^.(SO₄)₃^.18(H₂O).

The physical properties of Aluminum sulfate octadecahydrate are as following: (1)#H bond acceptors: 22; (2)#H bond donors: 38; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 88.64 Å².

Preparation of Aluminum sulfate octadecahydrate: It can be prepared by aluminum hydroxide and sulfuric acid. The aim product can be obtained via settlement, concentration, cooling solidification, and screen separation of reaction liquid.
2AlO₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂O

Uses of Aluminum sulfate octadecahydrate: It mainly used for the manufacture of titanium dioxide and painting, glue stuff, catalyst carrier. It is also used as a dye reagent, white leather tanning agents and food additives.      

You should be cautious while dealing with this chemical. It has   risk of serious damage to eyes. Therefore, you had better take the following instructions: Wear suitable eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: O.O.O.O.[Al+3].O.O.O.O.O.O.O.O.O.O.O.O.O.O.[O-]S([O-])(=O)=O
(2)InChI: InChI=1/Al.H2O4S.18H2O/c;1-5(2,3)4;;;;;;;;;;;;;;;;;;/h;(H2,1,2,3,4);18*1H2/q+3;;;;;;;;;;;;;;;;;;;/p-2
(3)InChIKey: OXKPBFGDKZYZSI-NUQVWONBAK

The toxicity data is as follows: