Zinc sulphate heptahydrate, 25 kg
Molar mass (M) 287,54 g/mol
Density (D) 1,97 g/cm³
Melting point (mp) 100 °C
ADR 9 III
CAS No. [7446-20-0]
excl. VAT. | 25 kg per Pack Qty.
Art. No. K301.5
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Our salts for analysis are manufactured under strict production guidelines. Analytical purity and best quality reliably characterize each batch. Salts in p.a. quality made by Carl ROTH meet the high requirements for reproducible results. Most of our salts are additionally specified according to international standards like ACS and ISO.
Definition:p.a.: pro analysi (for analysis)ACS: American Chemical SocietyISO: International Standard Organisation
Carl ROTH also offers reagents suitable for food analysis.
On the following pages, you will find the determination of
• Nitrogen according to Kjeldahl
and the determination of the
• Iodine value
• Acid value
• Peroxide value
• Saponification value
as well as other determining factors such as
• Hydroxyl value
• Fluoride ions
|Assay (compl.)||≥99,5 %|
|pH value (5 % in H2O)||4,4-6,0|
|In H2O insoluble matter||≤0,005 %|
|Total nitrogen (as N)||≤0,0005 %|
|Chloride (Cl)||≤0,0005 %|
|Arsenic (As)||≤0,00005 %|
|Lead (Pb)||≤0,002 %|
|Cadmium (Cd)||≤0,001 %|
|Calcium (Ca)||≤0,001 %|
|Iron (Fe)||≤0,0005 %|
|Potassium (K)||≤0,005 %|
|Cobalt (Co)||≤0,0005 %|
|Copper (Cu)||≤0,0005 %|
|Magnesium (Mg)||≤0,001 %|
|Manganese (Mn)||≤0,0003 %|
|Sodium (Na)||≤0,005 %|