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Bismuth trioxide CAS#1304-76-3

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Chemical Name：Bismuth trioxide

CAS No.:1304-76-3

Molecular Formula：BiO3-

Molecular weight:256.98

Sample: Available

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Product Details

Products Description of Bismuth trioxide CAS#1304-76-3

Yellow monoclinic crystals. Soluble in acid, insoluble in water and alkali. Can be reduced by carbon and hydrogen. Made by heating and decomposing bismuth nitrate. Used to make metallic bismuth, catalysts and bismuth oxide superconductors.

Bismuth oxide is also known as "bismuth trioxide". Pure products include α-type, β-type and δ-type. α-type is yellow monoclinic crystal with a relative density of 8.9 and a melting point of 825℃. It is soluble in acid but insoluble in water and alkali. β-type is bright yellow to orange, tetragonal crystal with a relative density of 8.55 and a melting point of 860℃. It is soluble in acid but insoluble in water. It is easily reduced to metallic bismuth by hydrogen, hydrocarbons, etc. δ-Bi2O3 is a special material with a cubic fluorite structure. One-quarter of the oxygen ion positions in its lattice are vacant, so it has very high oxygen ion conductivity.

Bismuth trioxide Chemical Properties

Melting point	825 °C
Boiling point	1890°C
density	8.9
Fp	1890°C
storage temp.	Store at +5°C to +30°C.
solubility	0.006g/l practically insoluble
form	powder
color	Yellow
Specific Gravity	8.9
Odor	Odorless
Water Solubility	INSOLUBLE
Merck	14,1273
Stability:	Stable.
InChIKey	KOCGCHBRHPOCBW-UHFFFAOYSA-N
CAS DataBase Reference	1304-76-3(CAS DataBase Reference)
NIST Chemistry Reference	bismuth(III) oxide(1304-76-3)
EPA Substance Registry System	Bismuth trioxide (1304-76-3)

Safety Information

Hazard Codes	Xi,Xn
Risk Statements	36/37/38-20/21/22
Safety Statements	26-36/37-36
WGK Germany	2
RTECS	EB2984460
TSCA	Yes
HS Code	2825 90 85
Toxicity	LD50 orally in Rabbit: 5000 mg/kg