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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

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

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

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

Natural occurrence

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

References

  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".
Quelle: https://en.wikipedia.org/wiki/Beryllium_carbonate