БОРАТ ВИСМУТА

Description

Bismuth borate BBiO3 is a salt of trivalent bismuth and boric acid, a component of special glasses with a high refractive index and a material for nonlinear optics. CAS 37233-77-5, EC number 237-899-6.

Basic Attributes

• CAS No: 37233-77-5
• Chemical formula: BBiO3
• Molecular weight: 267.79
• Exact weight: 267.97400
• EU number: 237-899-6
• PSA specifications: 69.2
• XLogP3: -0.73720

Synonyms

Bismuth(III) borate.

Substance class and mechanism of action

Bismuth borate belongs to a class of heavy metal-based oxide glasses, the Bi2O3-B2O3 system, valued in optics for its combination of high density, low cation field strength, and high polarizability of bismuth atoms. These properties give borate-bismuth glasses a high refractive index and pronounced hyperpolarizability, which leads to high third-order susceptibility - a key parameter for nonlinear optics effects, including third harmonic generation.

Scope of application

Used in cosmetics, pigments and a number of pharmaceutical formulations. The main area of ​​materials science is the glass industry: borate-bismuth glasses of the Bi2O3-B2O3 system are of interest for linear and nonlinear optics due to their high refractive index and pronounced third harmonic susceptibility, and are also considered promising materials for the infrared wavelength range. Heavy metal oxide glasses based on bismuth borate are being explored as an alternative to traditional lead-containing optical glasses.

Storage

Store in a dry place in a tightly closed container, avoid prolonged contact with moisture. The compound belongs to the poorly studied simple metal borates, for which a limited set of physicochemical parameters other than molecular and exact mass are available in open sources; Moreover, the main interest in boron-bismuth materials is focused not on individual orthoborate, but on multicomponent glass-forming systems Bi2O3-B2O3, where bismuth borate acts as one of the intermediate structural motifs. In such systems, the proportion of bismuth oxide determines the density, refractive index and softening temperature of glass, and the proportion of boron oxide determines the viscosity of the melt and the processability of melting. Selecting the ratio of components makes it possible to obtain compositions with a refractive index unattainable for classical silicate or borosilicate glasses, which determines the interest of materials scientists in this class of compounds in the tasks of creating a compact IR-transparent and nonlinear optical component base. CAS registration number 37233-77-5 and EC number 237-899-6 are used when reconciling reagent batches between different suppliers of specialty glass components and pigments. Molecular weight 267.79 and exact weight 267.97400 are used as reference parameters when confirming the authenticity of a batch of raw materials at incoming control. The compound is supplied under a single main synonym - bismuth (III) borate, which simplifies the identification of the position from different raw material suppliers.