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
15580
Boron
≥95% (boron), amorphous powder
Synonym(s):
B
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About This Item
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assay
≥95% (boron)
form
amorphous powder
reaction suitability
core: boron
reagent type: catalyst
resistivity
1.5E12 μΩ-cm, 20 °C
particle size
≤1 μm
density
2.34 g/mL at 25 °C (lit.)
SMILES string
[B]
InChI
1S/B
InChI key
ZOXJGFHDIHLPTG-UHFFFAOYSA-N
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This Item | 266620 | GF55168241 | GF96030086 |
|---|---|---|---|
| reaction suitability core: boron, reagent type: catalyst | reaction suitability core: boron, reagent type: catalyst | reaction suitability - | reaction suitability - |
| assay ≥95% (boron) | assay 99.7% trace metals basis | assay 95% | assay 95% |
| form amorphous powder | form crystalline | form powder | form powder |
| Quality Level 200 | Quality Level 100 | Quality Level - | Quality Level - |
| density 2.34 g/mL at 25 °C (lit.) | density 2.34 g/mL at 25 °C (lit.) | density 2.34 g/mL at 25 °C (lit.) | density 2.34 g/mL at 25 °C (lit.) |
| resistivity 1.5E12 μΩ-cm, 20 °C | resistivity 1.5E12 μΩ-cm, 20 °C | resistivity 1.5E12 μΩ-cm, 20 °C | resistivity 1.5E12 μΩ-cm, 20 °C |
Storage Class
13 - Non Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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How can I determine the shelf life / expiration / retest date of this product?
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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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I can't believe the particle size of this Boron is 1 μm, because of other Boron particle size. Is this information correct?
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The particle size of this material is verified on a lot-specific basis by the FSSS method (Fisher Sub Sieve Sizer).
Please see the link below to review a sample Certificate of Analysis:
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/15580-BULK-FBCCJ9753.pdfHelpful?
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