ChemicalBook CAS DataBase List 12037-01-3

12037-01-3

Name	Tetraterbium heptaoxide
CAS	12037-01-3
EINECS(EC#)	234-856-3
Molecular Formula	O7Tb4-2
MDL Number	MFCD00083151
Molecular Weight	747.7
MOL File	12037-01-3.mol

Synonyms

TB OXIDE Terbium(III TERBIUM(III,IV) OXIDE TERBIUM OXIDE TETRATERBIUM HEPTAOXIDE Terbium (III,IV) oxide (99.9%-Tb) (REO) TerbiumoxideREObrownblackpowder Terbium(III,IV) oxide, 99.9% metals basis TERBIUM(III, IV) OXIDE, NANOPOWDER, <100NM, 99.5 % TERBIUM(III,IV) OXIDE, 99.999% TERBIUM PEROXIDE TERBIUM(III IV) OXIDE NANOPARTICLES 9 Terbium(III, IV) oxide, 99.90% terbium(iii,iv) oxide, reacton TERBIUMOXIDE,POWDER Terbium(III,IV) oxide, 99.9% (REO) Terbium(III,IV) oxide, REacton(R), 99.9% (REO) Terbium(III,IV) oxide, REacton(R), 99.998% (REO) Terbium(III,IV) oxide, REacton(R), 99.99% (REO) Terbium(III,IV) oxide, REacton, 99.9% (REO)

Chemical Properties

Appearance	dark brown to brown-black powder
Melting point	2340°C
density	7.3 g/mL at 25 °C(lit.)
storage temp.	Inert atmosphere,Room Temperature
form	nanopowder
color	brown to black
Specific Gravity	6.27
Water Solubility	insoluble
Merck	14,9157
InChI	InChI=1S/7O.4Tb
InChIKey	UWZVBPNIJCKCMC-UHFFFAOYSA-N
SMILES	[Tb](=O)(O[Tb]=O)O[Tb](=O)O[Tb]=O
CAS DataBase Reference	12037-01-3(CAS DataBase Reference)
EPA Substance Registry System	12037-01-3(EPA Substance)

Safety Data

Symbol(GHS)	GHS06
Signal word	Danger
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
Safety Statements	S24/25:Avoid contact with skin and eyes . less more
WGK Germany	3
TSCA	Yes
REACH Registrations	Active
HS Code	28469016
Storage Class	11 - Combustible Solids

Raw materials And Preparation Products

Hazard Information

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.

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.

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.

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.

Material Safety Data Sheet(MSDS)

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