Beryllium carbonate
| Identifiers | |
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3D model (Jmol)
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| ChemSpider | |
| ECHA InfoCard | 100.032.740 |
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PubChem CID
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| RTECS number | DS2350000 |
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| Properties | |
| BeCO3 | |
| Melting point | 54 °C (129 °F; 327 K) |
| Boiling point | 100 °C (212 °F; 373 K) decomposes |
| 0.36 g/100 mL | |
| Thermochemistry | |
| 65 J/mol·K | |
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Std molar
entropy (S |
52 J/mol·K |
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Std enthalpy of
formation (ΔfH |
-1025 kJ/mol |
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Gibbs free energy (ΔfG˚)
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-948 kJ/mol |
| Hazards | |
| Main hazards | Irritant (Xi) |
| Lethal dose or concentration (LD, LC): | |
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LD50 (median dose)
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150 mg/kg (guinea pig) |
| US health exposure limits (NIOSH): | |
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PEL (Permissible)
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TWA 0.002 mg/m3 C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be) |
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REL (Recommended)
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Ca C 0.0005 mg/m3 (as Be) |
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IDLH (Immediate danger)
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Ca [4 mg/m3 (as Be)] |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is   ?) |
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| Infobox references | |
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. 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.
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. It is believed that in the older literature this is probably what was referred to as beryllium carbonate.
It may cause irritation. It should be handled carefully since several related beryllium compounds are known carcinogens.
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