Aluminium Sulphate

Specification of Aluminum Sulphate

CAS No. 10043-01-3
EINECS No. 233-135-0
Formula Al2(SO4)3
Mol Wt. 342.14
H.S. Code 2833.22
Physical and Chemical Properties
Physical State white to off-white lump or powder
Melting Point 770 °C (Decomposes)
Specific Gravity 2.7
Solubility In Water Soluble
pH >2.9 (5% solution)
Flash Point Not considered to be a fire hazard
Stability Stable under ordinary conditions
FERRIC
Aluminium (as Al2O3) 17.0 ~ 18.0%
Iron Compound 0.5% max
Insolubles In Water 0.3% max
pH 2.7 ~ 3.7 (5% Sol.)
Heavy Metal (as Pb) 10ppm max
Arsenic (as As) 3ppm max
NON-FERRIC
Aluminium (as Al2O3) 17.0 ~ 18.0%
Iron Compound 0.03% max
Insolubles In Water 0.3% max
pH 2.8 ~ 3.8 (5% Sol.)
Heavy Metal (as Pb) 10ppm max
Arsenic (as As) 3ppm max