tri-Sodium citrate dihydrate, 1 kg
Molar mass (M) 294,1 g/mol
Density (D) 1,76 g/cm³
Melting point (mp) 150 °C
CAS No. [6132-04-3]
€31.05/Pack Qty. Campaign price!
excl. VAT. | 1 kg per Pack Qty.
Art. No. 3580.1
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p.a.: pro analysi (for Analysis)
ACS: American Chemical Society
ISO: International Standard Organisation
For pesticide residue analysis in food
In addition to the required adsorbent Silica gel 60 diamino a number of individually weighed and premixed buffer and extraction mixtures is offered, specially composed for different sample matrices.
For extraction, the European standard EN 15662 recommends a citrate extraction mix (Mix I), while AOAC standard 2007.1 uses an acetate extraction mix (Mix II). For clean-up, the Diamino phase (PSA) removes, e.g., sugars and organic acids. Magnesium sulfate removes water, C18 ec removes nonpolar interferences such as fats and the Carbon phase removes pigments, sterols, and nonpolar interferences. For selection of the proper clean-up mix see table below.
|Assay (perchloric acidim)||≥99,0 %|
|pH-value (5 %, water)||7,5-9,0|
|In H2O insoluble matter||≤0,003 %|
|Chloride (Cl)||≤0,003 %|
|Phosphate (PO4)||≤0,005 %|
|Sulphate (SO4)||≤0,005 %|
|Oxalate (as C2H2O4)||≤0,01 %|
|Ammonium (NH4)||≤0,001 %|
|Arsenic (As)||≤0,00004 %|
|Lead (Pb)||≤0,0005 %|
|Calcium (Ca)||≤0,005 %|
|Iron (Fe)||≤0,0005 %|
|Copper (Cu)||≤0,0005 %|
|Nickel (Ni)||≤0,0005 %|
|Heavy metals (as Pb)||≤0,0005 %|