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Ammonium Ferric Sulphate Dodecahydrate 98% Extrapure
Ammonium iron (III) sulphate dodecahydrate , (Ferric Alum)

Product Code.
00206
Grade
Extrapure
Purity
98%
CAS No.
7783-83-7
Molecular Formula
NH4Fe(SO4)2.12H2O
Molecular Weight
482.19
H.S.Code
2833.29900
Shelf Life
60 Months

Physical Properties

Physical state at 20 °C
Solid
Colour
Pale violet crystals
Odour
Odorless
pH value
1
Melting point/ Freezing point [°C]
39 - 41 °C
Density [g/cm3]
1.71
Solubility in water [% weight]
482.2 g/l at 20 °C

Packaging

Specification

Appearance
Pale violet crystals
Assay (iodometric)
98.0 - 101.0%
Chloride (Cl)
Max 0.002%
Zinc (Zn)
Max 0.005%
Lead (Pb)
Max 0.002%
Iron II Fe(II)
Max 0.002%
Copper (Cu)
Max 0.002%
Substance not precepitated by NH3 (as SO4)
Max 0.1%

Safety Information and Hazard Symbols

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319
Precaution Statement: P305 + P351 + P338