Beryllium carbonate

Structural formula
General
Surname	Beryllium carbonate
Molecular formula	BeCO 3
External identifiers / databases
EC number	236-030-8
ECHA InfoCard	100.032.740
PubChem	61577
Wikidata	Q2566421
properties
Molar mass	69.02 g mol −1
Physical state	firmly
Melting point	54 ° C
boiling point	100 ° C (decomposition)
solubility	poorly soluble in water
safety instructions
H and P phrases	H: 350i-330-301-372-319-335-315-317-411
	P: ?
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Beryllium carbonate is an inorganic chemical compound of beryllium from the group of carbonates .

Occurrence

Beryllium carbonate occurs naturally in the form of the mineral niveolanite in the form of the mixed compound NaBe (CO ₃ ) (OH) · 2H ₂ O.

Extraction and presentation

Beryllium carbonate tetrahydrate can be obtained by reacting carbon dioxide with an aqueous solution of beryllium hydroxide. When sodium carbonate is added to a beryllium salt solution and this is reacted with carbon dioxide, beryllium oxide carbonate, which is a mixture of beryllium carbonate and beryllium hydroxide, is formed.

The anhydrate can be obtained by annealing beryllium oxide in a stream of carbon dioxide at 1000 ° C for several hours .

{\ displaystyle \ mathrm {BeO + CO_ {2} \ longrightarrow BeCO_ {3}}}

Basic beryllium carbonate Be ₂ CO ₃ (OH) ₂ is formed when beryllium sulfate reacts with ammonium carbonate and contains both carbonate and hydroxide ions.

properties

Beryllium carbonate is a solid that is sparingly soluble in water. It gives off carbon dioxide easily and can only be stored under a CO ₂ atmosphere.

{\ displaystyle \ mathrm {BeCO_ {3} \ longrightarrow BeO + CO_ {2}}}

Soluble complexes of the compound can be obtained by dissolving beryllium hydroxide in ammonium carbonate solutions.

{\ displaystyle \ mathrm {4 \ Be (OH) _ {2} +6 \ (NH_ {4}) _ {2} CO_ {3} \ longrightarrow 3 \ (NH_ {4}) _ {2} Be (CO_ {3}) _ {2} \ cdot Be (OH) _ {2} +6 \ NH_ {3} \ uparrow}}

use

Beryllium carbonate is mainly used as an intermediate in the production of beryllium from beryllium ores.

Individual evidence

^ ^A ^b ^c A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1113.
↑ ^a ^b ^c ^d ^e ^f Richard C. Ropp: Encyclopedia of the Alkaline Earth Compounds . Newnes, 2012, ISBN 0-444-59553-8 , pp. 359 ( limited preview in Google Book Search).
↑ Entry on beryllium compounds in the GESTIS substance database of the IFA , accessed on April 14, 2014(JavaScript required) .
↑ Kenneth A. Walsh: Beryllium Chemistry and Processing . ASM International, 2009, ISBN 0-87170-721-7 , pp. 118 ( limited preview in Google Book search).
^ Gmelin's Handbook of Inorganic Chemistry. BERYLLIUM, system number 26, eighth edition. Verlag Chemie, Berlin 1930, pages 178-179

[Arnold_F._Holleman-1] A ^b ^c A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1113.

[Richard_C._Ropp-2] ↑ ^a ^b ^c ^d ^e ^f Richard C. Ropp: Encyclopedia of the Alkaline Earth Compounds . Newnes, 2012, ISBN 0-444-59553-8 , pp. 359 ( limited preview in Google Book Search).

[GESTIS-3] Entry on beryllium compounds in the GESTIS substance database of the IFA , accessed on April 14, 2014(JavaScript required) .

[Kenneth_A._Walsh-4] Kenneth A. Walsh: Beryllium Chemistry and Processing . ASM International, 2009, ISBN 0-87170-721-7 , pp. 118 ( limited preview in Google Book search).

[Gmelin,_Beryllium-5] Gmelin's Handbook of Inorganic Chemistry. BERYLLIUM, system number 26, eighth edition. Verlag Chemie, Berlin 1930, pages 178-179