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| | BARIUM SILICATE Basic information |
| Product Name: | BARIUM SILICATE | | Synonyms: | silicicacid(h2sio3),bariumsalt(1:1);BARIUM SILICON OXIDE;BARIUM SILICATE;BARIUM METASILICATE;Silicicacid,bariumsalt(1:1);Metasilicic acid barium salt;BARIUM SILICATE ISO 9001：2015 REACH;Barium m-silicate | | CAS: | 13255-26-0 | | MF: | BaH4O3Si | | MW: | 217.44 | | EINECS: | 236-245-7 | | Product Categories: | Metals | | Mol File: | 13255-26-0.mol |  |
| | BARIUM SILICATE Chemical Properties |
| Hazard Codes | Xn | | Risk Statements | 20/22 | | Safety Statements | 28 | | RIDADR | UN1564 | | WGK Germany | 1 | | TSCA | Yes | | HazardClass | 6.1 | | PackingGroup | III |
| | BARIUM SILICATE Usage And Synthesis |
| Description | 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. | | Chemical Properties | Colorless powder. Insoluble in water; soluble in acids. | | Uses | 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. | | Preparation | Bariumsilicate can be prepared by calcining the oxide
with silica, SiO2, at an elevated temperature:
BaO + SiO2 + hea?BaSiO3
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| | BARIUM SILICATE Preparation Products And Raw materials |
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