334103
Silicon nitride
powder, ≥99.9% trace metals basis
Synonym(s):
Trisilicon tetranitride
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About This Item
Linear Formula:
Si3N4
CAS Number:
Molecular Weight:
140.28
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352300
EC Number:
234-796-8
MDL number:
Quality Segment
assay
≥99.9% trace metals basis
form
powder
composition
N₄Si₃
reaction suitability
core: silicon
particle size
<1 μm
density
3.44 g/mL at 25 °C (lit.)
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
Silicon nitride based ceramics possess high fracture toughness, hardness and wear resistance, resistance to corrosion, thermal stability. Two known polymorphs of silicon nitride exist, alpha and beta Si3N4, both have hexagonal structure. A study shows that a third state, cubic spinel structure, has also been synthesized.
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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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