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Lab Chemicals
Inorganic Salts
ALUMINIUM POTASSIUM SULPHATE DODECAHYDRATE
ALUMINIUM POTASSIUM SULPHATE DODECAHYDRATE AR/ACS
Conforms to BP, Ph Eur, USP
Alum, Potassium alum, Potassium aluminum sulfate dodecahydrate
Article No.
00970
Grade
AR/ACS
Purity
99%
CAS No.
7784-24-9
Molecular Formula
AlK(SO
4
)
2
.12H
2
O
Molecular Weight
474.38
H.S. Code
2833.3030
Shelf Life
60 Months
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
Certificate of Analysis (COAs)
Physical Properties
Physical state at 20 °C
Solid
Colour
White crystalline
Odour
Odorless
pH value
3.3
Melting point/ Freezing point [°C]
92 °C
Boiling point [°C]
200°C
Density [g/cm3]
1.757
Solubility in water [% weight]
14% in water
Packings
500 g
(00500)
2500 g
(02500)
25 Kg
(0025K)
50 Kg
(0050K)
Specifications
Appearance
White crystalline powder/crystals
Assay (complexometric)
99.0-100.5%
Identification
To comply USP, BP test
Appearance of solution
Passes test
Insoluble matter
Max 0.005%
pH (10% solution in water)
3.0 -.3.5
Chloride (Cl)
Max 0.0005%
Ammonium (NH4)
Max 0.005%
Arsenic (As)
Max 0.0002%
Copper (Cu)
Max 0.0005%
Iron (Fe)
Max 0.0005%
Heavy metal (as Pb)
Max 0.001%
Sodium (Na)
Max 0.02%
Loss on drying (at 400°C)
43 - 46%
Safety Information and Hazard Symbols
Safety Statement: 22-24/25
Revision Date :
12-Jan-2023