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F198421

Barium silicon oxide , Null , 13255-26-0

CAS NO.:13255-26-0

Empirical Formula: BaH4O3Si

Molecular Weight: 217.44

MDL number: MFCD00014186

EINECS: 236-245-7

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500g RMB3418.40 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 1604°C
Density  1,67 g/cm3
refractive index  1.67
solubility  insoluble in H2O; soluble in acid solutions
form  Powder
color  White
Water Solubility  Insoluble in water. Soluble in acids.
CAS DataBase Reference 13255-26-0(CAS DataBase Reference)
EPA Substance Registry System Silicic acid (H2SiO3), barium salt (1:1) (13255-26-0)

Description and Uses

BaSiO3 is orthorhombic with unit-cell dimensions of a = 5.6182(5)?, b = 12.445(1), c = 4.5816 ?. It is dimorphic with α-BaSiO3 stable below about 990°C but forms β-BaSiO3 above 1000°C. A 1:1 mol ratio of BaO–SiO2 fired at 850°C and 1050°C serves to form the two dimorphs.
The enthalpy of solution of BaSiO3 in (3.15 mol/dm3 HF + 8.13 mol/dm3 HCl) has been measured. From the results, the standard molar enthalpy of formation of BaSiO3 (s) was calculated. The value obtained was -1606.4±2.6 kJ/mol.

Barium silicate films that are suitable for use as transmission media in integrated optical circuits. It is shown that the films, which can be produced with a wide range of refractive indices by suitable selection of the ratio of the target constituents, exhibit low optical attenuation. Hence it is used for integrated optical circuits. It is used in ceramics.

Safety

Symbol(GHS) 
GHS07
Hazard statements  H302-H332
Precautionary statements  P261-P264-P270-P301+P312a-P304+P340-P501a
Hazard Codes  Xn
Risk Statements  20/22
Safety Statements  28
RIDADR  UN1564
WGK Germany  1
TSCA  Yes
HazardClass  6.1
PackingGroup  III

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