This product has an equivalence value of 1.
1.09257
CombiCoulomat sin fritas
Karl Fischer reagent for coulometric water determination for cells with and without diaphragm Aquastar®
Sinónimos:
Reactivos de Karl Fischer sin frita
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About This Item
Código UNSPSC:
41115601
NACRES:
NA.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad
Productos recomendados
Materiales
diaphragm (No)
Nivel de calidad
Línea del producto
Aquastar®
Formulario
liquid
idoneidad de la reacción
reaction type: coulometric
técnicas
Karl-Fischer titration: suitable
titration: suitable
pH
5.5 (20 °C in H2O)
temperatura de transición
flash point 12 °C
densidad
0.92 g/cm3 at 20 °C
temp. de almacenamiento
15-25°C
Nota de análisis
Prueba de aplicación: pasa la prueba
Información legal
AQUASTAR is a registered trademark of Merck KGaA, Darmstadt, Germany
Producto relacionado
Referencia del producto
Descripción
Precios
Palabra de señalización
Danger
Frases de peligro
Consejos de prudencia
Clasificaciones de peligro
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Chronic 3 - Flam. Liq. 2 - STOT SE 1
Código de clase de almacenamiento
3 - Flammable liquids
Clase de riesgo para el agua (WGK)
WGK 3
Punto de inflamabilidad (°F)
53.6 °F
Punto de inflamabilidad (°C)
12 °C
Certificados de análisis (COA)
Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»
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Protocolos
Summary application report for analysis of moisture in Biodiesel
Summary application report for analysis of moisture in Acids, aqueous
Karl Fischer titration offers accurate water content determination in hemp samples compared to the loss on drying method.
Summary application report for analysis of moisture in Lyophilisates.
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Is the equivalence valor 1 for titrant reactions that uses this composite?
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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
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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Why is SO2 not listed on the SDS? Isn't SO2 required in Karl Fischer reaction?
1 answer-
While sulfur dioxide (SO2) is added to Karl Fischer reagents during production, it is not listed in their composition in the Safety Data Sheet (SDS). This is because when all components are mixed, SO2 immediately reacts with the alcohol (R-OH, such as methanol) and the base (R'N), resulting in the formation of [RN]SO3CH3 according to reaction below:
R-OH + SO2 + R'N → [RN]SO3CH3 (reaction after production)
SO2 is vital for the reaction in Karl Fischer titration, as the reaction will not proceed without it. However, the SO2 present in the reagent is bound in the form of [RN]SO3CH3, and there is no free SO2 (SO2(g)/SO3-) present in any Karl Fischer reagent.
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