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Substance Name: Hafnium
RN: 7440-58-6
UNII: X71938L1DO
InChIKey: VBJZVLUMGGDVMO-UHFFFAOYSA-N

Note

  • A metal element of atomic number 72 and atomic weight 178.49, symbol Hf.

Classification Code

  • TWA 0.5 mg/m3

Molecular Formula

  • Hf

Molecular Weight

  • 178.49
 
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Names and Synonyms

Name of Substance

  • Hafnium

MeSH Heading

  • Hafnium

Synonyms

  • Celtium
  • EC 231-166-4
  • EINECS 231-166-4
  • HSDB 552
  • UNII-X71938L1DO

Systematic Name

  • Hafnium

Superlist Names

  • Hafnium
  • Hafnium and compounds
  • Hafnium powder, dry
  • Hafnium powder, dry [UN2545] [Spontaneously combustible]
  • Hafnium powder, wetted with not <25% water (a visible excess of water must be present) (a) mechanically produced, particle size <53 microns, (b) chemically produced, particle size <840 microns
  • Hafnium powder, wetted with not <25% water (a visible excess of water must be present) (a) mechanically produced, particle size <53 microns, (b) chemically produced, particle size <840 microns [UN1326] [Flammable solid]
  • Hafnium, elemental
  • UN1326
  • UN2545

Registry Numbers

CAS Registry Number

  • 7440-58-6

FDA UNII

  • X71938L1DO

Other Registry Number

  • 412316-00-8

System Generated Number

  • 0007440586

Structure Descriptors

InChI

1S/Hf

InChIKey

VBJZVLUMGGDVMO-UHFFFAOYSA-N

Smiles

[Hf]