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Ammonium iron(III) sulphate dodecahydrate, 2.5 kg

From  Carl ROTH
≥98,5 %, p.a., ACS, ISO
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Pack.
Iron alum, Iron(III) ammonium sulphate, Iron ammonium alum
Empirical formula (NH4)Fe(SO4)2 · 12 H2O
Molar mass (M) 482,19 g/mol
Density (D) 1,71 g/cm³
Melting point (mp) 41 °C
WGK 1
CAS No. 7783-83-7
EG-Nr. 233-382-4


€385.95/Pack Qty. 

excl. VAT. | 2.5 kg per Pack Qty.

Art. No. P734.3

In stock
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from 6 Pack Qty. €366.65/Pack Qty.
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Ammonium iron(III) sulphate dodecahydrate
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Art. No. Pack Qty. Pack. Price Quantity
P734.1 500 g plastic

€95.60

P734.2 1 kg plastic

€181.70

P734.3 2.5 kg plastic

€385.95

P734.4 100 g plastic

€30.00

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Downloads / MSDS


General information

Salts for Analysis

Our salts in p.a. quality are produced under strict purity and quality requirements, ensuring consistently high batch quality. They are ideal for all analytical applications where reproducible and reliable results are essential.

Many products additionally meet the internationally recognized ACS and ISO standards, which facilitates their use in accredited laboratories and standardized testing procedures.

Glossary of terms:• p.a. – pro analysis (for analytical applications)• ACS – American Chemical Society• ISO – International Organization for Standardization


Certificates of Analysis

You can search for and download your certificate of analysis for the selected product here. Please provide your batch number.
The following analysis certificates have been found:

Guarantee analysis

Assay (iodom.)98,5-102,0 %
In H2O insoluble matter≤0,005 %
Substances not precipitated by ammonia≤0,05 %
Chloride (Cl)≤0,0005 %
Nitrate (NO3)≤0,01 %
Lead (Pb)≤0,001 %
Calcium (Ca)≤0,01 %
Iron II (Fe II)≤0,001 %
Potassium (K)≤0,005 %
Copper (Cu)≤0,002 %
Magnesium (Mg)≤0,001 %
Manganese (Mn)≤0,005 %
Sodium (Na)≤0,01 %
Zinc (Zn)≤0,003 %