Trisilicon tetranitride

HCID 3084099

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Basic information

CAS: 12033-89-5
Standard SMILES: N12[Si]34N5[Si]16N3[Si]25N46
InChIKey: HQVNEWCFYHHQES-UHFFFAOYSA-N
Molecular formula: N4Si3
Average molar mass: 140.28 g/mol
Monoisotopic mass: 139.94307559

Names & identifiers

Preferred name: Trisilicon tetranitride
IUPAC: 2,4,6,7-tetraza-1,3,5-trisilahexacyclo[3.1.1.01,4.02,5.03,6.03,7]heptane
English name: Trisilicon tetranitride (alpha)
Molecular formula: N4Si3
Molecular weight: 0

Names & synonyms

Silicon nitride12033-89-5Silicon nitride (Si3N4)Trisilicon tetranitrideQHB8T06IDKNEEDLELOKSINOVABAYSINID STWIDIANIT N 2000DTXSID20892247DENKA SILICON NITRIDE SN-F 2Silicium Nitricatum

Show more names

RefChem:58064Si3N4DTXCID101079316234-787-9234-796-8MFCD00011230EINECS 234-796-8UNII-QHB8T06IDK

Database identifiers

CAS: 12033-89-5
PubChem CID: 3084099
DTXSID: DTXSID20892247
UNII: QHB8T06IDK
EC Number: 234-796-8

Properties

Computed structural properties

Topological polar surface area: 13 Å²
Hydrogen bond donors: 0
Hydrogen bond acceptors: 4
Rotatable bonds: 0
Heavy atoms: 7
Formal charge: 0
Complexity: 154

Experimental & physicochemical properties

Chemical ClassesMetals -> Metalloid Compounds (Silicon)

SpringerMaterials PropertiesAuger electron spectroscopy

Density3.17 @25 °C

Physical Description · 2 items

Dry Powder

White solid when pure, but may be brown or black; Exists in alpha and beta crystalline forms; [Merck Index] Grey odorless powder; [Alfa Aesar MSDS]

Safety & regulation

GHS classification

GHS Classification · 3 items

This chemical does not meet GHS hazard criteria for 97.3% (250 of 257) of all reports.

Not Classified

Aggregated GHS information provided per 257 reports by companies from 5 notifications to the ECHA C&L Inventory.

Hazard information

Regulatory Information · 4 items

Chemical: Silicon nitride (Si3N4)

Silicon nitride (Si3N4) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicon nitride (Si3N4) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 06-03-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/14702

Silicon nitride (Si3N4): Non hazardous

Hazards Summary · 1 item

No adverse gross or histopathological effects observed in 28-day oral study of rats up to the highest tested dose (1,000 mg/kg/day); No reproductive or developmental toxicity observed in oral study of rats up to the highest tested dose (1,000 mg/kg/day); No evidence of mutagenicity; [JECDB] May cause irritation; [Alfa Aesar MSDS] See NITRIDES.

Hazard Classes and CategoriesNot Classified

Safety & protection

Protective Action Criteria (PAC) · 3 items

30 [mg/m3]

330 [mg/m3]

2000 [mg/m3]

Chemistry & industry

Pharmacology

MeSH Pharmacological ClassificationToxic air-borne matter related to work performed They are usually produced by the specific nature of the occupation.

Uses & manufacturing

Uses · 2 items

Used to make high-temperature gas turbines and diesel engines; [Merck Index] Silicon nitride is used in semiconductor components and in high-temperature ball bearings, dies, automotive engine parts, pressure valves, and cutting tools. [Ullmann]

Metal Machining [Category: Heat or Machine]

U.S. Production2023: 75,000 - <500,000 lb

Consumer UsesAbrasives

Industry UsesAbrasives

General Manufacturing Information · 2 items

Fabricated Metal Product Manufacturing

Silicon nitride (Si3N4): ACTIVE