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