If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf
1.06329
Natriumhydrogencarbonat
for analysis EMSURE® ACS,Reag.Ph Eur
Synonym(e):
Natriumbicarbonat, Natriumhydrogencarbonat, Natron
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About This Item
Qualität
ACS reagent
Qualitätsniveau
Agentur
reag. Ph. Eur.
Produktlinie
EMSURE®
Assay
99.0-101.0% (acidimetric)
99.7-100.3% dry basis (acidimetric)
Form
powder
Wirksamkeit
4220 mg/kg LD50, oral (Rat)
Verunreinigungen
≤0.0065% Iodine reducing matter (as I)
≤0.015% Insoluble matter
Verlust
≤0.2% loss on drying, Silica gel
pH-Wert
8.6 (20 °C, 50 g/L in H2O)
pKa (25 °C)
(1) 6.37, (2) 10.25 (carbonic acid)
mp (Schmelzpunkt)
270 °C (decomposition)
Löslichkeit
96 g/L
Dichte
2.22 g/cm3 at 20 °C
2.16 g/mL at 25 °C (lit.)
Schüttdichte
1000 kg/m3
Anionenspuren
chloride (Cl-): ≤0.002%
phosphate (PO43-): ≤0.001%
phosphate, silicate (as SiO2): ≤0.005%
sulfate (SO42-): ≤0.015%
sulfur compounds (as SO42-): ≤0.003%
Kationenspuren
As: ≤0.0002%
Ca: ≤0.01%
Cu: ≤0.0002%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.005%
N: ≤0.0005%
NH4+: ≤0.0005%
Pb: ≤0.0005%
heavy metals (as Pb): ≤0.0005%
Lagertemp.
2-30°C
SMILES String
[Na+].OC([O-])=O
InChI
1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1
InChIKey
UIIMBOGNXHQVGW-UHFFFAOYSA-M
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Hinweis zur Analyse
Identität: entspricht
Gehalt (acidimetrisch; berechnet auf getrocknete Substanz): 99,7 - 100,3 %
Gehalt (acidimetrisch): 99,0 - 101,0 %
Unlösliche Anteile: ≤ 0,015 %
pH-Wert (5 %; Wasser): ≤ 8,6
Chlorid (Cl): ≤ 0,002 %
Phosphat (PO₄): ≤ 0,001 %
Sulfat (SO₄): ≤ 0,015 %
Phosphat und Silikat (als SiO₂): ≤ 0,005 %
Schwefelverbindungen (als SO₄): ≤ 0,003 %
Gesamtstickstoff (N): ≤ 0,0005 %
Ammonium (NH₄): ≤ 0,0005 %
Schwermetalle (als Pb): ≤ 0,0005 %
As (Arsen): ≤ 0,0002 %
Ca (Calcium): ≤ 0,01 %
Cu (Kupfer): ≤ 0,0002 %
Fe (Eisen): ≤ 0,0005 %
K (Kalium): ≤ 0,005 %
Mg (Magnesium): ≤ 0,005 %
Pb (Blei): ≤ 0,0005 %
Iod reduzierende Anteile (als I): ≤ 0,0065 %
Trocknungsverlust (Kieselgel): ≤ 0,20 %
Entspricht ACS, Reag. Ph Eur
Rechtliche Hinweise
Lagerklassenschlüssel
13 - Non Combustible Solids
WGK
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Analysenzertifikate (COA)
Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.
Besitzen Sie dieses Produkt bereits?
In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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