12640-40-3

Basic information

• Product Name: Bismuth oxide
• Synonyms: C.I. 77160; Bismuth oxide; Bismuth trioxide
• CAS NO: 12640-40-3
• Molecular Formula: Bi₄O₆
• Molecular Weight: 931.918
• EINECS: 215-134-7;235-736-3
• Mol File: 12640-40-3.mol

Chemical Properties

• Melting Point: 825℃
• Water Solubility: INSOLUBLE
• CAS DataBase Reference: Bismuth oxide(CAS DataBase Reference)
• NIST Chemistry Reference: Bismuth oxide(12640-40-3)
• EPA Substance Registry System: Bismuth oxide(12640-40-3)

Safety Data

• Hazard Codes: Xi:Irritant
• Statements: R36/37/38:
• Safety Statements: S26:; S36/37:
• Hazardous Substances Data: 12640-40-3(Hazardous Substances Data)

Usage

Uses

Used in Cosmetics and Paint Industry:
Bismuth oxide is used as a pigment for its white color and opacity, providing a safe and effective coloring agent in cosmetics and paint formulations.
Used in Glass and Ceramic Production:
Bismuth oxide is used as a component in the manufacturing process of glass and ceramics, enhancing their physical and optical properties.
Used in Chemical Catalysts:
Bismuth oxide serves as a catalyst in certain chemical reactions, facilitating and accelerating the process while remaining unchanged in mass and chemical properties.
Used in Optical Glass and Lens Manufacturing:
Due to its high refractive index and low dispersion, bismuth oxide is used in the production of optical glasses and lenses, improving their light transmission and image quality.
Used in Electronics and Optoelectronics Industry:
Bismuth oxide's unique electronic properties make it a valuable material in the development of electronic and optoelectronic devices, contributing to advancements in these fields.

Upstream product

• 1304-76-3 bismuth(III) oxide 
• 7440-69-9 bismuth 
• 7732-18-5 water 
• 12048-50-9 bismuth oxide 
• 1333-74-0 hydrogen 
• 20667-12-3 silver(l) oxide 
• 10025-69-1 tin(II) chloride dihdyrate 
• 781577-54-6 calcium(II) oxalate 
• 10361-46-3 bismuth subnitrate 
• 304-59-6 Rochelle's salt 
• 46140-16-3 bismuth(III) nitrate 
• 7782-61-8 ferric nitrate 

Downstream Products

• 35984-07-7 Bi₂O₅ 

Relevant articles and documents

Low-temperature synthesis of nanosized bismuth ferrite by soft chemical route

The present research describes a simple low-temperature synthesis route of preparing bismuth ferrite nanopowders through soft chemical route using nitrates of Bismuth and Iron. Tartaric acid is used as a template material and nitric acid as an oxidizing agent. The synthesized powders are characterized by X-ray diffractometry, thermogravimetry and differential thermal analysis, infrared spectroscopy, and scanning electron microscopy. The particle size of the powder lies between 3 and 16 nm. In the process, phase pure bismuth ferrite can be obtained at a temperature as low as 400°C, in contrast to 550°C for coprecipitation route. On the other hand, we find that, like solid state reaction route, Pechini's autocombustion method of synthesis generates a lot of impurity phases along with bismuth ferrite.

Nonadditive linearity in the chemostimulating effect of activator oxides + dlient compositions on GaAs thermal oxidation

The chemostimulation efficiency of the activators Sb2O 3 and Bi2O3 in compositions with a diluent (Al2O3) is a linear function of activator percentage over a wide range of temperatures. This function is not, however, additive to the thicknesses achieved in the presence of individual components. The percentage of the activator elements in the resulting oxide layers coincides with that in the initial compositions in the linear region and differs from it in the nonadditivity region. Thermal analysis in combination with X-ray powder diffraction showed that Al2O3 alters the temperature range and character of the intrinsic transformations of activator oxides.