Beryllium carbonate

Beryllium carbonate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.032.740 Edit this at Wikidata
EC Number
  • 236-030-8
RTECS number
  • DS2350000
UN number 1566
  • InChI=1S/CH2O3.Be/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 checkY
    Key: ZBUQRSWEONVBES-UHFFFAOYSA-L checkY
  • InChI=1/CH2O3.Be/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
    Key: ZBUQRSWEONVBES-NUQVWONBAN
  • [Be+2].[O-]C([O-])=O
Properties
BeCO3
Molar mass 69.020 g·mol−1
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[1]
52 J/mol·K[1]
-1025 kJ/mol[1]
-948 kJ/mol[1]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Toxic (T)

Irritant (Xi)
Dangerous for the environment (N)

GHS labelling:[3]
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H301, H315, H317, H319, H330, H335, H350i, H372, H411
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
0
0
Lethal dose or concentration (LD, LC):
150 mg/kg (guinea pig)
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 0.002 mg/m3
C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be)[2]
REL (Recommended)
 Ca C 0.0005 mg/m3 (as Be)[2]
IDLH (Immediate danger)
 Ca [4 mg/m3 (as Be)][2]
Related compounds
Other cations
 Magnesium carbonate
Calcium carbonate
Strontium carbonate
Barium carbonate
Radium carbonate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Beryllium carbonate is a chemical compound with the chemical formula BeCO3.

Structures

[edit]

There are three forms reported, anhydrous, tetrahydrate and basic beryllium carbonate. The anhydrous form is reported to be unstable, decomposing to BeO and carbon dioxide, and requiring storage under CO2.[4] 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.[5]

Preparation

[edit]

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.[6] It is believed that in the older literature this is probably what was referred to as beryllium carbonate.[6]

Safety

[edit]

It may cause irritation. Toxic. It should be handled carefully since several related beryllium compounds are known carcinogens.

Natural occurrence

[edit]

No formations of purely beryllium carbonate are known to occur naturally. The only Be-rich carbonate mineral currently known is niveolanite.[7]

References

[edit]
  1. ^ a b c d "Beryllium carbonate".
  2. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0054". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ GHS: GESTIS 082790
  4. ^ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5
  5. ^ David Anthony Everest, 1964, The Chemistry of Beryllium, Elsevier Pub. Co.
  6. ^ a b J.E. Macintyre, Dictionary of Inorganic Compounds 1992 CRC Press ISBN 0-412-30120-2
  7. ^ "Niveolanite".
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