Beryllium carbonate
| Identifiers | |
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.032.740 |
PubChem CID
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| RTECS number |
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CompTox Dashboard (EPA)
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| Properties | |
| BeCO3 | |
| Molar mass | 69.0211 g/mol |
| Melting point | 54 °C |
| Boiling point | 100 °C (decomp) |
| Thermochemistry | |
Heat capacity (C)
|
0.9417 J/K |
Std enthalpy of
formation (ΔfH⦵298) |
-14.85 kJ/g |
| Hazards | |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
|
150 mg/kg (guinea pig) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Beryllium carbonate is a chemical compound with the chemical formula BeCO3. There are three forms reported, anhydrous, a tetrahydrate and basic beryllium carbonate. The anhydrous form is reported to be unstable, decomposing to BeO and carbon dioxide, and requiring storage under CO2.[1] The tetrahydrate is said to be formed when CO2 is bubbled through a solution of Be(OH)2 and is also reported to be similarly unstable.[2] Basic beryllium carbonate is a mixed salt, which can be prepared by the reaction of beryllium sulfate and ammonium carbonate, and contains both carbonate and hydroxide ions, with formula Be2CO3(OH)2.[3] It is believed that in the older literature this is probably what was referred to as beryllium carbonate.[3]