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
201030
Osmium tetroxide
ReagentPlus®, 99.8%
Synonym(s):
Osmium(VIII)-oxide, ‘Osmic acid’
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About This Item
powder
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Product Name
Osmium tetroxide, ReagentPlus®, 99.8%
InChI key
VUVGYHUDAICLFK-UHFFFAOYSA-N
InChI
1S/4O.Os
SMILES string
O=[Os](=O)(=O)=O
vapor density
8.8 (vs air)
vapor pressure
7 mmHg ( 20 °C)
product line
ReagentPlus®
assay
99.8%
form
crystalline
powder
reaction suitability
reagent type: oxidant
bp
130 °C (lit.)
mp
39.5-41 °C (lit.)
storage temp.
2-8°C
Quality Level
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Related Categories
1 of 4
This Item | 419494 | 75633 | 251755 |
|---|---|---|---|
| form crystalline, powder | form crystalline | form solution | form liquid |
| assay 99.8% | assay ≥98.0% | assay - | assay - |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 100 |
| vapor pressure 7 mmHg ( 20 °C) | vapor pressure 7 mmHg ( 20 °C) | vapor pressure - | vapor pressure 1.23 psi ( 20 °C), 3.55 psi ( 55 °C) |
| mp 39.5-41 °C (lit.) | mp 39.5-41 °C (lit.) | mp - | mp - |
| vapor density 8.8 (vs air) | vapor density 8.8 (vs air) | vapor density - | vapor density - |
Application
- To promote the lactonization of alkenols to lactones.[2]
- To mediate the selective oxidative cleavage of olefins by oxone to form the corresponding ketones or carboxylic acids.[3]
- Dihydroxylation of mono-trans-di, and trisubstituted olefins to form 1,2-diols with high enantioselectivity in the presence of chiral amines.[4]
General description
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signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1B
Storage Class
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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Is it suitable for SEM images ?
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Osmium tetroxide is widely used as an oxidizer for visualizing cells in microscopy. This product has not been specifically tested in SEM applications. While this product may be suitable, products 75632 and 75633 are specifically recommended for SEM applications.
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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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