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
P4006
Phosphotungstic acid hydrate
reagent grade
Sinónimos:
Tungstophosphoric acid
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About This Item
Productos recomendados
grado
reagent grade
Nivel de calidad
Formulario
powder
mp
~95 °C (lit.)
cadena SMILES
O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O
InChI
1S/H3O4P.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h(H3,1,2,3,4);1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Clave InChI
AVFBYUADVDVJQL-UHFFFAOYSA-N
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Palabra de señalización
Danger
Frases de peligro
Consejos de prudencia
Clasificaciones de peligro
Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1C
Código de clase de almacenamiento
8A - Combustible corrosive hazardous materials
Clase de riesgo para el agua (WGK)
WGK 2
Punto de inflamabilidad (°F)
Not applicable
Punto de inflamabilidad (°C)
Not applicable
Equipo de protección personal
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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Certificados de análisis (COA)
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How can I determine the shelf life / expiration / retest date of this product?
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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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Which type of phosphotungstic acid (P4006 or 79690) is recommended for the electron microscopic (TEM) staining of synaptic proteins, as mentioned in Bloom and Aghajanian, J. Ultrastructural Research, 22, 361-375 (1968)?
1 answer-
Product P4006 is labeled as a "Reagent Grade" chemical, while Product 79690 is described as suitable "For Microscopy." Both products have not been tested for general use in histology or electron microscopy. Considering the substantial similarity between the two products, it is expected that both products could be utilized for TEM electron microscopy. If one of the products is on backorder, it is recommended to order the available product.
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