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Tetraterbium heptaoxide

CAS No.12037-01-3
Chemical Name:Tetraterbium heptaoxide
CBNumber:CB0141422
Molecular Formula:O7Tb4-2
Formula Weight:747.7
MOL File:12037-01-3.mol

Tetraterbium heptaoxide Property

Melting point 2340°C
Density 7.3 g/mL at 25 °C(lit.)
storage temp. Inert atmosphere,Room Temperature
form Powder
Specific Gravity 6.27
color brown to black
Water Solubility insoluble
Merck 14,9157
CAS DataBase Reference 12037-01-3(CAS DataBase Reference)
EPA Substance Registry System Terbium oxide (Tb4O7) (12037-01-3)
UNSPSC Code 12352303
NACRES NA.23

Safety

Safety Statements :24/25
WGK Germany :3
TSCA :Yes
HS Code :28469016

NFPA 704:

	0
0		1

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H301-H315-H319
Precautionary statements P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P310+P330-P405

Tetraterbium heptaoxide Price More Price(20)

Brand: Sigma-Aldrich(India)
Product number: 634255
Product name : Terbium(III,IV) oxide
Purity: nanopowder, <100?nm particle size (BET), 99.5% trace metals basis
Packaging: 25G
Price: ₹45962.95
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: 253952
Product name : Terbium(III,IV) oxide
Purity: 99.9% trace metals basis
Packaging: 10G
Price: ₹28664.6
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: 204579
Product name : Terbium(III,IV) oxide
Purity: 99.999% trace metals basis
Packaging: 2G
Price: ₹13693.63
Updated: 2022/06/14
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Brand: ALFA India
Product number: ALF-011207-30
Product name : Terbium(III,IV) oxide, 99.9% (REO), Reacton™
Purity:
Packaging: 1ea
Price: ₹72963
Updated: 2022/05/26
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Brand: ottokemi
Product number: TO 105
Product name : Terbium oxide nanopowder, APS 46-60 nm
Purity: 99.95%
Packaging: 5gm
Price: ₹18099
Updated: 2022/05/26
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Tetraterbium heptaoxide Chemical Properties,Usage,Production

Chemical Properties Terbium oxide is a dark brown powder. slightly hygroscopic. Insoluble in water and alkaline solution, soluble in dilute acid. The aqueous suspension is alkaline and can absorb carbon dioxide in the air to form basic carbonate.

Terbium oxide is a functional material used to make metal terbium, magneto-optical glass, phosphors, magneto-optical storage materials, chemical additives, etc.
Uses Terbium Oxide, also called Terbia, has important role as an activator for green phosphors used in color TV tubes. Meanwhile Terbium Oxide is also used in special lasers and as a dopant in solid-state devices. It is also frequently used as a dopant for crystalline solid-state devices and fuel cell materials. Terbium Oxide is one of the chief commercial Terbium compounds. Produced by heating the metal Oxalate,Terbium Oxide is then used in the preparation of other Terbium compounds.
Preparation Terbium(III,IV) oxide Synthesis: Tetraterbium nitrate or terbium carbonate or terbium sulfate solution with sodium hydroxide to form terbium hydroxide precipitate, which is filtered and burned to obtain terbium oxide.
4Tb(OH)3+0.5O2→Tb4O7+6H2O
Tb4O7 is most often produced by ignition of the oxalate at or the sulfate in air.
Application Terbium(III,IV) oxide acts as a precursor for the preparation of other terbium compounds. It is used as a redox catalyst in reactions involving oxygen. At high temperatures, it can liberate oxygen. It finds applications in the manufacture of glass, optical and ceramic. Nanoparticles of terbium oxide are used as analytical reagents for the determination of drugs in food.
Reactions Terbium Oxide reacts with atomic oxygen to produce TbO2, but more convenient preparations are available. Tb4O7 (s) + 6 HCl (aq) → 2 TbO2 (s) + 2 TbCl3 (aq) + 3 H2O (l) Terbium oxide is heated with ammonium chloride to produce the ammonium salt of the pentachloride: Tb4O7 + 22 NH4Cl → 4 (NH4)2TbCl5 + 7 H2O + 14 NH3
reaction suitability reagent type: catalyst
core: terbium
Purification Methods Dissolve it in acid (e.g. perchloric acid), precipitate it as its oxalate and ignite the oxalate at 650o.