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Sodium chloride, 1 kg, plastic

Sodium chloride, 1 kg, plastic

SKU 3957.1
€ 24,07
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Sodium chloride, 1 kg, plastic
Product Details
CAS number: 68514-61-4
HS code: 25010099
Brand: Carl Roth
Sodium chloride, min. 99,5 %, p.a., ACS, ISO, Molar mass (M) 58,44 g/mol, Density (D) 2,17 g/cm³, Boiling point (bp) >1450 °C, CAS No. [7647-14-5], EG-Nr. 231-598-3, Empirical formula NaCl


Sodium chloride ≥99,5 %, p.a., ACS, ISO

Carrier for DNA precipitation in SDS-containing solutions.



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Salts for Analysis

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


Salts


QuEChERS Products

For pesticide residue analysis in food

Within a few years after its development the QuEChERS method (Quick, Easy, Cheap, Efficient, Rugged, Safe) has gained a leading position for determination of pesticide residues in food samples by GC-MS or LC-MS, allowing rapid and cheap clean-up of strongly matrix-contaminated samples. For optimizing the extraction of pH-dependent compounds, for minimizing decomposition of sensitive substances, and for broadening the matrix spectrum,different modifications of the QuEChERS method have been elaborated.
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 non-polar interferences such as fats and the carbon phase removes pigments, sterols, and non-polar interferences. For selection of the proper clean-up mix see table below.


Adsorbents and what their use

MgSO4 Removes excess of water
NaCl For phase separation
Silica Gel 60 Diamino (PSA)
(Primary Secondary Amine)
Removes organic and fatty acids, sugars and anthocyanin pigments
Silica Gel 60 C18 ec
(reversed phase modified silica)
Traps nonpolar compounds, e.g., lipids
Carbon (GCB)
(Activated Charcoal / Graphitized Carbon Black)
Removes pigments and sterols
(please note: planar pesticides are also removed)

Assay (arg.) ≥99,5 %
Appearance of solution complies
pH value (5 % in water) 5,0-8,0
In H2O insoluble matter ≤0,005 %
Chlorate and nitrate (as NO3) ≤0,003 %
Hexacyanoferrate (II) [Fe(CN)6] ≤0,0001 %
Total nitrogen (as N) ≤0,001 %
Phosphate (PO4) ≤0,0005 %
Sulphate (SO4) ≤0,002 %
Bromide (Br) ≤0,01 %
Iodide (I) complies
Iodide (I) ≤0,002 %
Aluminium (Al) ≤0,0002 %
Arsenic (As) ≤0,0001 %
Barium (Ba) complies
Barium (Ba) ≤0,001 %
Calcium (Ca) ≤0,002 %
Iron (Fe) ≤0,0002 %
Potassium (K) ≤0,005 %
Copper (Cu) ≤0,0002 %
Magnesium (Mg) ≤0,001 %
Nickel (Ni) ≤0,001 %
Heavy metals (as Pb) ≤0,0005 %
Magnesium, alkaline-earth metals (as Ca) ≤0,01 %
Loss on drying ≤0,5 %
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