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Substance Name: Tantalum pentoxide
RN: 1314-61-0
UNII: OEZ64Z53M4
InChIKey: BPUBBGLMJRNUCC-UHFFFAOYSA-N

Classification Code

  • TWA 5 mg/m3 dusts. as Ta

Molecular Formula

  • O5-Ta2

Molecular Weight

  • 441.895
 
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Names and Synonyms

Name of Substance

  • Tantalum pentoxide

Synonyms

  • EC 215-238-2
  • EINECS 215-238-2
  • Tantalic acid anhydride
  • Tantalum penta oxide
  • Tantalum pentoxide
  • UNII-OEZ64Z53M4

Systematic Names

  • Ditantalum pentaoxide
  • Tantalum oxide
  • Tantalum oxide (Ta2O5)

Superlist Names

  • Tantalum oxide
  • Tantalum oxide dusts

Registry Numbers

CAS Registry Number

  • 1314-61-0

FDA UNII

  • OEZ64Z53M4

Other Registry Numbers

  • 12653-86-0
  • 184226-71-9
  • 53095-18-4

System Generated Number

  • 0001314610

Structure Descriptors

InChI

1S/5O.2Ta/q5*-2;2*+5

InChIKey

BPUBBGLMJRNUCC-UHFFFAOYSA-N

Smiles

[O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral > 4gm/kg (4000mg/kg) LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA

LIVER: "HEPATITIS (HEPATOCELLULAR NECROSIS), DIFFUSE"

BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)
Hygiene and Sanitation Vol. 32(10-12), Pg. 343, 1967.
rat LD intraperitoneal > 5gm/kg (5000mg/kg) VASCULAR: REGIONAL OR GENERAL ARTERIOLAR OR VENOUS DILATION

LIVER: OTHER CHANGES

BLOOD: OTHER CHANGES
Industrial Medicine. Vol. 15, Pg. 482, 1946.
rat LD50 oral 8gm/kg (8000mg/kg)   Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975.