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
463922
Ammonium metatungstate hydrate
99.99% trace metals basis
Synonyma:
Ammonium tungsten oxide hydrate, Hexaammonium wolframate hydrate
Vybrat velikost
| Vám/Skladová položka | Dostupnost | Cena |
|---|---|---|
25 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 8 390,00 Kč |
O této položce
8 390,00 Kč
Quality Segment
assay
99.99% trace metals basis
form
powder
reaction suitability
reagent type: catalyst
impurities
≤150.0 ppm Trace Metal Analysis
mp
100 °C (dec.) (lit.)
SMILES string
N.N.N.N.N.N.O.O[W]1O[W](O)(=O)(O1)O[W]2(=O)(=O)O[W](O)(=O)(O2)O[W]3(=O)(=O)O[W](O)(=O)(O3)O[W]4(=O)(=O)O[W](O)(=O)(O[W]5(=O)(=O)O[W](O)(=O)(O[W]6(=O)(=O)O[W](O)(O)O6)O5)O4
InChI
1S/6H3N.9H2O.32O.12W/h6*1H3;9*1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/q;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6*+1;+2/p-8
InChI key
ZBHPUDGBNLMJQH-UHFFFAOYSA-F
General description
Application
- Carbon-supported tungsten catalyst for hydrogenolysis of cellulose.
- Reduced tungsten and mixed tungsten oxide catalysts for bifunctional hydroisomerization of n-alkanes.
- Hybrid 2D/3D tungsten diselenide transistors via chemical vapor deposition method.
1 of 1
Tato položka | |||
|---|---|---|---|
| description 99.99% trace metals basis | description ≥85% WO3 basis (gravimetric) | description ≥99.9% trace metals basis | description ≥66.5% (W) |
| form powder | form solid | form powder | form crystalline |
| assay 99.99% trace metals basis | assay ≥85% WO3 basis (gravimetric) | assay ≥99.9% trace metals basis | assay - |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| impurities ≤150.0 ppm Trace Metal Analysis | impurities ≤0.005% water-insoluble matter | impurities ≤1000.0 ppm Trace Metal Analysis | impurities - |
| mp 100 °C (dec.) (lit.) | mp 100 °C (dec.) (lit.) | mp >350 °C (lit.) | mp 100 °C (dec.) (lit.) |
| reaction suitability reagent type: catalyst | reaction suitability reagent type: catalyst | reaction suitability - | reaction suitability reagent type: catalyst |
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signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1
Skladovací třída
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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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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