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
334103
Silicon nitride
powder, ≥99.9% trace metals basis
Synonym(s):
Trisilicon tetranitride
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
25 g | Check Cart for Availability | $98.80 |
100 g | Check Cart for Availability | $311.00 |
About This Item
$98.80
Quality Segment
assay
≥99.9% trace metals basis
form
powder
composition
Si3N4 , N₄Si₃
reaction suitability
core: silicon
particle size
<1 μm
density
3.44 g/mL at 25 °C (lit.)
application(s)
dielectrics and passivation
SMILES string
N12[Si]34N5[Si]16N3[Si]25N46
InChI
1S/N4Si3/c1-5-2-6(1)3(5)7(1,2)4(5)6
InChI key
HQVNEWCFYHHQES-UHFFFAOYSA-N
General description
1 of 1
This Item | |||
|---|---|---|---|
| description powder, ≥99.9% trace metals basis | description nanopowder, <50 nm particle size (spherical), ≥98.5% trace metals basis | description predominantly α-phase, ≤10 micron | description predominantly β-phase, ≤10micron primary particle size |
| assay ≥99.9% trace metals basis | assay ≥98.5% trace metals basis | assay - | assay - |
| particle size <1 μm | particle size <50 nm (spherical) | particle size ≤10 micron | particle size - |
| form powder | form nanopowder | form powder | form powder |
| density 3.44 g/mL at 25 °C (lit.) | density 3.44 g/mL at 25 °C (lit.) | density 3.44 g/mL at 25 °C (lit.) | density 3.44 g/mL at 25 °C (lit.) |
| reaction suitability core: silicon | reaction suitability core: silicon | reaction suitability core: silicon | reaction suitability core: silicon |
| composition N₄Si₃ , Si3N4 | composition Si3N4 | composition N₄Si₃ , Si3N4 | composition N₄Si₃ , Si3N4 |
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Storage Class
11 - Combustible Solids
wgk
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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