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Lab Chemicals
Metallic Salts (Metal Salts)
ALUMINIUM SULPHATE OCTADECAHYDRATE
ALUMINIUM SULPHATE OCTADECAHYDRATE Extra Pure
Alum; Dialuminum sulfate octadecahydrate
Article No.
00973
Grade
Extra Pure
Purity
98%
CAS No.
7784-31-8
Molecular Formula
AI
2
(SO
4
)
3
.18H
2
O
Molecular Weight
666.42
H.S. Code
2833.2210
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 powder
pH value
3 - 4
Melting point/ Freezing point [°C]
86 °C
Solubility in water [% weight]
Soluble in water
Packings
500 g
(00500)
25 Kg
(0025K)
50 Kg
(0050K)
Specifications
Appearance
A white crystalline powder
Assay ( as AI2(SO4)3.18H2O]; complexometric)
Min 98.0%
pH (2% solution in water)
2.5 - 4.0
Chloride (Cl)
Max 0.005%
Heavy metal (as Pb)
Max 0.002%
Ammonium (NH4)
Max 0.005%
Arsenic (As)
Max 0.001%
Calcium (Ca)
Max 0.02%
Iron (Fe)
Max 0.005%
Potassium (K)
Max 0.2%
Alkalies & alkaline earth metals
Max 0.4%
Safety Information and Hazard Symbols
Symbol: GHS05
Signal Word: Danger
Hazardous Statement: H318
Precaution Statement: P280-P305 + P351 + P338
Revision Date :
05-Jan-2022