Completing data — usually done within a minute
Basic information
- CAS
53373-50-5- Standard SMILES
[Nb]- InChIKey
GUCVJGMIXFAOAE-UHFFFAOYSA-N- Molecular formula
- Nb
- Average molar mass
- 92.9064 g/mol
- Monoisotopic mass
- 92.90637
Names & identifiers
- Preferred name
- Niobium
- IUPAC
- niobium
Names & synonyms
NIOBIUMColumbium7440-03-1Niobium elementNiobium-93Nb05175J654GDTXSID4052479Niobium MetallicumNiobium 93RefChem:55714DTXCID5031052
Show more names
231-113-5niobium atomNiobium powderNiobium rodNiobium turningsMFCD00011126Niobium foilNiobium-106
Database identifiers
- CAS
53373-50-5、7440-03-1- PubChem CID
- 23936
- DTXSID
DTXSID4052479- ChEBI
CHEBI:33344- UNII
- 05175J654G
- EC Number
- 231-113-5
- Nikkaji
- J1.481.397G、J10.631C
Properties
Computed structural propertiesFilling in
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 0
- Rotatable bonds
- 0
- Heavy atoms
- 1
- Formal charge
- 0
- Complexity
- 0
Experimental & physicochemical properties
Density8.57 @25 °C
Boiling Point4742 °C @760 [mm Hg]
Melting Point2468 °C
Physical DescriptionShiny, soft, ductile metal that develops a bluish cast after oxidizing in air at room temperature over a long time or after heating to 200 deg C; [http://periodic.lanl.gov/elements/41.html]
Safety & regulation
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 58% (307 of 529) of all reports.
Danger
H228 (34%): Flammable solid [Danger Flammable solids]
P210, P240, P241, P280, and P370+P378 (click each P-code to see the statement)
Aggregated GHS information provided per 529 reports by companies from 7 notifications to the ECHA C&L Inventory.；Reported as not meeting GHS hazard criteria per 307 of 529 reports by companies.；There are 6 notifications provided by 222 of 529 reports by companies with hazard statement code(s).；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard information
Regulatory Information
Chemical: Niobium
Status: Active Update: 16-01-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15401
Niobium, powder: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - Niobium: Human health tier I assessment
Hazards SummaryA severe skin irritant; Toxicity by ingestion is low. [Sax]
Hazard Classes and CategoriesFlam. Sol. 2 (34%)
CSL Reaction Information
CSL00090
NIOBIUM + TITANIUM
acid etched Niobium titanium (NbTi) filaments are combustible upon exposure to static electricity or electrostatic discharge.
Flammable
User-Reported
2/27/18
Safety & protection
Protective Action Criteria (PAC)
10 [mg/m3]
110 [mg/m3]
660 [mg/m3]
Regulatory information
Regulatory Information
Chemical: Niobium
Status: Active Update: 16-01-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15401
Niobium, powder: Does not have an individual approval but may be used under an appropriate group standard
Chemistry & industry
Uses & manufacturing
Uses
There are 18 known isotopes. Ores (niobite or columbite, niobite-tantalite, parochlore, and euxenite) are known in Canada, Brazil, Nigeria, Zaire, and Russia. Used in welding rods, jewelry, and superconductive magnets; Was used in the space program for advanced air frame systems; [http://periodic.lanl.gov/elements/41.html] Used in superalloys containing up to 5% niobium to make gas turbine components; [Ullmann]
Jewelry making [Category: Hobbies]
General Manufacturing InformationNiobium: ACTIVE
Related reactions
5 records
Compound notes
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