12008-40-1

Basic information

• Product Name: Lithium octaborate
• Synonyms: 12008-40-1
• CAS NO: 12008-40-1
• Molecular Formula: B8Li2O13
• Molecular Weight: 0
• Mol File: 12008-40-1.mol
• Article Data: 5

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Lithium octaborate(CAS DataBase Reference)
• NIST Chemistry Reference: Lithium octaborate(12008-40-1)
• EPA Substance Registry System: Lithium octaborate(12008-40-1)

Safety Data

• Hazardous Substances Data: 12008-40-1(Hazardous Substances Data)

Usage

General Description

Lithium octaborate, also known as Lithium tetraborate or Lithium borate, is a chemical compound with the formula Li2B4O7. Traditionally, it's derived from a combination of Lithium and Boron. It’s a common ingredient in ceramics and some polymers, serving as a flux to lower the melting temperature of these materials. Lithium octaborate also has uses in nuclear energy plants due to its neutron-absorbing properties. Additionally, it is used as an insecticide, specifically for wood-destroying pests, due to its boron components. Its LD50 (lethality dose for 50% subjects) is >2000 mg/kg (rats, oral), indicating low toxicity.

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Relevant articles and documents

Structural Role of PbO in Li2O-PbO-B2O3 Glasses

Thermal and spectroscopic studies have been carried out on a number of glasses with wide ranging compositions in the pseudoternary glass system Li2O-PbO-B2O3 in order to understand the structural role of PbO in these glasses. Infrared, Raman, and 11B MAS-NMR results indicate that PbO behaves as a network former in these glasses and is possibly incorporated in the network as [PbO4/2]2- units. The formation of [PbO4/2]2- units leads to the creation of neutral three-coordinated boron (B03) which, in turn, leads to the reformation of four-coordinated boron (B-4) in the structure at the expense of two-coordinated (B-2) and singly coordinated (B2-1) boron atoms. The variations of glass transition temperatures (Tg) and molar volumes also support this model.

Borate glass structure by Raman and infrared spectroscopies

Raman and infrared spectroscopies have been employed to probe the continuous evolution of borate glass structures as a function of the nature and concentration of alkali oxide modifiers.At relatively low alkali contents, the glasses contain covalent networks consisting of interconnected units bearing BO4- tetrahedra.Further addition of alkali oxide causes the progressive depolymerization of the network as a result of the formation of non-bridging oxygen atoms.Eventually, complete network disruption into small and highly charged borate units results in ionic glasses.The nature of the alkali cation determines the structure of these glasses by affecting several high-temperature isomerization or disproportionation equilibria.

Cation-Network Interactions in Binary Alkali Metal Borate Glasses. A Far-Infrared Study

The far-infrared spectra of compositions probing the glass-forming regions of all five binary alkali metal borate systems χM2O.(1-χ)B2O3 (00.25.One distribution of cation sites has been observed for the lower alkali metal content Rb and Cs glasses.The fractions of cations in the two different network sites have also been evaluated.The squares of the frequencies of the cation-motion bands were found to vary linearly with composition, and exhibit kinks at χ ca. 0.20, for all but the Cs glasses.This behavior was explained on the basis of the network structural changes known to occur at this composition.