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/418/501/product-dating-information-06-25-mk.pdf
1.06277
Sodium arsenite solution
c(NaAsO₂) = 0.05 mol/l (0,1 N), reag. USP, ready-to-use volumetric solution for titration, Titripur®
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| Ihnen/SKU | Verfügbarkeit | Preis |
|---|---|---|
1 L | Warenkorb auf Verfügbarkeit prüfen | € 82,80 |
1 L | Warenkorb auf Verfügbarkeit prüfen | € 86,90 |
Über diesen Artikel
Produktname
Sodium arsenite solution, c(NaAsO2) = 0.05 mol/l (0,1 N), Titripur®, reag. USP
agency
reag. USP
Quality Segment
product line
Titripur®
form
liquid
quality
Analyzed in our ISO 17025 accredited QC lab
reaction suitability
reaction type: Redox Reactions
concentration
0.05 M
technique(s)
titration: suitable
pH
9.3 (20 °C in H2O)
density
1.005 g/m3 at 20 °C
storage temp.
15-25°C
Features and Benefits
This volumetric solution is analyzed by our calibration laboratory D-K-15185-01-00 which is accredited according to DIN EN ISO/IEC 17025 for analysis of amount-of-substance concentrations in volumetric solutions by DAkkS (Deutsche Akkreditierungsstelle - German National Accreditation Body). The accreditation certificate can be found at www.sigmaaldrich.com/ISO17025.
Packaging
Analysis Note
Amount-of-substance concentration 0.04975 - 0.05025 mol/L
Measurement uncertainty ± 0.00015 mol/L
Traceability NIST SRM
The concentration is determined by volumetric titration and refers to 20°C.
The amount-of-substance concentration of this volumetric solution is traceable to a primary standard reference material (SRM) from the National Institute of Standards and Technology, Gaithersburg, USA (NIST SRM 723 Tris(hydroxymethyl)aminomethane) by means of volumetric standard Tris(hydroxymethyl)aminomethane (article number 1.02408), certified reference material according to ISO 17034, analyzed by our accredited calibration laboratory of Merck KGaA, Darmstadt, Germany according to DIN EN ISO/IEC 17025. The uncertainty is expressed as expanded measurement uncertainty with a coverage factor k=2 covering a confidence level of 95%.
Note: The titer is a correction factor to correct for variations of the volumetric solution, the titration equipment, the temperature and other laboratory conditions. For correct titration results it is recommended to determine a titer with the laboratory specific equipment and under laboratory specific conditions directly after opening a new bottle and at regular time intervals.
Legal Information
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Dieser Artikel | |||
|---|---|---|---|
| reaction suitability reaction type: Redox Reactions | reaction suitability - | reaction suitability - | reaction suitability - |
| technique(s) titration: suitable | technique(s) photometry: suitable | technique(s) AAS: suitable | technique(s) - |
| product line Titripur® | product line - | product line Certipur® | product line - |
| storage temp. 15-25°C | storage temp. 15-25°C | storage temp. 15-25°C | storage temp. - |
| concentration 0.05 M | concentration - | concentration 1000 mg/L As in 0.5 M HNO3 | concentration - |
| form liquid | form liquid | form - | form - |
signalword
Danger
hcodes
Hazard Classifications
Aquatic Chronic 3 - Carc. 1A
Lagerklasse
6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Zulassungslistungen
Zulassungslistungen werden hauptsächlich für chemische Produkte erstellt. Für nicht-chemische Produkte können hier nur begrenzte Angaben gemacht werden. Kein Eintrag bedeutet, dass keine der Komponenten gelistet ist. Es liegt in der Verantwortung des Benutzers, die sichere und legale Verwendung des Produkts zu gewährleisten.
1327-53-3
7784-46-5 + 1327-53-3
1327-53-3
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?
1 answer-
Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
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How long does this product keep at room temperature?
1 answer-
The solution is stable for 3 years after production, provided that the bottle is originally closed and stored between 15°C and 25°C. Once the bottle is opened, the stability period cannot be precisely determined, as treatments and conditions vary between laboratories. Upon opening, the solution will absorb carbon dioxide from the environment, leading to a relatively fast change in concentration. It is recommended to perform a titer determination directly after opening the solution and then at regular intervals to monitor its stability. With the factor correction from the titer determination, the solution can be used until it is approximately +/- 10% from the nominal concentration.
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