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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

CHEMICAL/PHYSICAL PROPERTIES:

 

 

MOLECULAR FORMULA:

     Al.3/2H2-O4-S

 

MOLECULAR WEIGHT: 342.14 [Lide, DR (ed.). CRC Handbook of Chemistry and Physics. 81stEdition. CRC Press LLC, Boca Raton:FL 2000, p. 4-40]

 

COLOR/FORM:

White, lustrous crystals, pieces, granules, or powder [O'Neil, M.J. (ed.).The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals.13th Edition, Whitehouse Station, NJ: Merck and Co., Inc., 2001., p. 65

 

   ODOR:

ODORLESS [Osol, A. (ed.). Remington's Pharmaceutical Sciences. 16th ed.Easton, Pennsylvania: Mack Publishing Co., 1980., p. 721]

 

 TASTE:

HAS SWEET, MILDLY ASTRINGENT TASTE [Osol, A.(ed.).Remington'sPharmaceutical Sciences. 16th ed. Easton, Pennsylvania: Mack PublishingCo., 1980., p. 721] 

 

 MELTING POINT:

770 deg C (with decomposition) [Weast, R.C. (ed.) Handbook of Chemistryand Physics. 69th ed. Boca Raton, FL: CRC Press Inc., 1988-1989., p. B-69]

 

CORROSIVITY:

Aluminum sulfate solution is corrosive to aluminum. [Bureau of Explosives;Emergency Handling of Haz Matl in Surface Trans p.21 (1981)]

May corrode metals in presence of moisture [U.S. Coast Guard, Departmentof Transportation. CHRIS - Hazardous Chemical Data. Volume II. Washington,D.C.: U.S. Government Printing Office, 1984-5.]

 

DENSITY/SPECIFIC GRAVITY:

1.61 [O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals.13thEdition, Whitehouse Station, NJ: Merck and Co., Inc., 2001., p. 65]

 

PH:

Aq soln (1 g/1 ml water) not less than 2.9 [Osol, A. (ed.). Remington'sPharmaceutical Sciences. 16th ed. Easton, Pennsylvania: Mack PublishingCo., 1980., p. 721]

 

SOLUBILITIES:

Soluble in 1 part water. [O'Neil, M.J. (ed.). The Merck Index – AnEncyclopedia of Chemicals, Drugs, and Biologicals. 13th Edition,Whitehouse Station, NJ: Merck and Co., Inc., 2001., p. 65]

Soluble in water, insoluble in ethanol. [Lide, DR (ed.). CRC Handbook ofChemistry and Physics. 81st Edition. CRC Press LLC, Boca Raton: FL 2000,p. 4-40]

 

SPECTRAL PROPERTIES:

Index of refraction: 1.47 [Weast, R.C. (ed.) Handbook of Chemistry andPhysics. 69th ed. Boca Raton, FL: CRC Press Inc., 1988-1989., p. B-69]

     

OTHER CHEMICAL/PHYSICAL PROPERTIES:

Melts when gradually heated; at 250 deg C loses its water; ...on long boiling of aqueous solution, insoluble basic salt precipitates. [O'Neil,M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, andBiologicals.13th Edition, Whitehouse Station, NJ: Merck and Co., Inc.,2001., p. 65]

 

Insoluble in alcohol; 86.9 g/100 mL water at 0 deg C; 1104 g/100 mL waterat 100 deg C density: 1.69 at 17 deg C; mp 86.5 deg C with decomposition;colorless, monoclinic crystals; index of refraction: 1.474, 1.467, 1.483/Aluminum Sulfate Octadecahydrate/ [U.S. Coast Guard, Department ofTransportation. CHRIS - Hazardous Chemical Data. Volume II. Washington,D.C.: U.S. Government Printing Office, 1984-5.]

 

Solid.MW:666.43 for /Aluminum sulfateoctadecahydrate/ [Weast, R.C.ed.) Handbook of Chemistry and Physics. 69th ed. Boca Raton, FL: CRCPress Inc., 1988-1989., p. B-69]

 

One part of technical aluminum sulfate reduces the alkalinity as calciumcarbonate by 0.55 parts. [Kirk-Othmer Encyclopedia of Chemical Technology.3rd ed., Volumes 1-26. New York, NY: John Wiley and Sons, 1978-1984., p.V24 396 (1984)]

 

Decomposes at 770 deg C [Lewis, R.J., Sr (Ed.). Hawley'sCondensedChemical Dictionary. 13th ed. New York, NY: John Wiley & Sons, Inc. 1997., p. 46]

 

Heat of formation = -820.98 kcal/mole; free energy offormation = -738.99kcal/mole; standard entropy = 57.2 cal/deg(all at 25 deg C) [Garrels RM,Christ CL; Solutions, Minerals and Equilibria. NY, NY: Harper & Row p.403 (1965)]