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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
( R e d i r e c t e d f r o m C o b a l t c a r b o n a t e )
Cobalt(II ) carbonate
Names
IUPAC name
Cobalt(II ) carbonate
Other names
Cobaltous carbonate; cobalt(II ) salt
Identifiers
CAS Number
12602-23-2 Y
3D model (JSmol )
ChemSpider
ECHA InfoCard 100.007.428
PubChem CID
UNII
W58TNI7T29 Y
CompTox Dashboard (EPA )
InChI=1S/CH2O3.Co/c2-1(3 )4;/h(H2,2,3,4);/q;+2/p-2 N
Key: ZOTKGJBKKKVBJZ-UHFFFAOYSA-L N
InChI=1/CH2O3.Co/c2-1(3 )4;/h(H2,2,3,4);/q;+2/p-2
Key: ZOTKGJBKKKVBJZ-NUQVWONBAB
Properties
Chemical formula
CoCO3
Molar mass
118.941 g/mol
Appearance
red-pink solid
Density
4.13 g/cm3
Melting point
427 °C (801 °F; 700 K ) [3] cobalt(II ) oxide (anhydrous)K )
Solubility in water
0.000142 g/100 mL (20 °C)[1]
Solubility product (K sp
1.0·10−10 [2]
Solubility
soluble in acid alcohol , methyl acetate ethanol
Refractive index (n D
1.855
Structure
Crystal structure
Rhombohedral (anhydrous)
Thermochemistry
Std molar (S ⦵ 298 )
79.9 J/mol·K[3]
Std enthalpy of (Δf H ⦵ 298 )
−722.6 kJ/mol[3]
Gibbs free energy (Δf G ⦵ )
-651 kJ/mol[3]
Hazards
GHS labelling
Pictograms
[4]
Signal word
Warning
Hazard statements
H302 , H315 , H317 , H319 , H335 , H351 [4]
Precautionary statements
P261 , P280 , P305+P351+P338 [4]
NFPA 704
Lethal dose or concentration (LD, LC):
LD 50 median dose )
640 mg/kg (oral, rats)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Cobalt(II ) carbonate is the inorganic compound with the formula CoCO3 hydrometallurgical purification of cobalt from its ores. It is an inorganic pigment, and a precursor to catalysts .[5] II ) carbonate also occurs as the rare red/pink mineral spherocobaltite .[6]
Preparation and structure [ edit ]
It is prepared by combining solutions cobaltous sulfate and sodium bicarbonate :
CoSO4 3 3 2 SO 4 2 2
This reaction is used in the precipitation of cobalt from an extract of its roasted ores.[5]
CoCO3 calcite , consisting of cobalt in an octahedral coordination geometry .[7]
Reactions [ edit ]
Like most transition metal carbonates, cobalt carbonate is insoluble in water, but is readily attacked by mineral acids:
CoCO3 2 H 2 O )6 2 2
It is used to prepare many coordination complexes. The reaction of cobalt(II ) carbonate and acetylacetone in the presence of hydrogen peroxide gives tris(acetylacetonato)cobalt(III) .[8]
Heating the carbonate proceeds in a typical way for calcining , except that the product becomes partially oxidized:
6 CoCO3 2 Co 3 O 4 CO 2
The resulting Co 3 O 4 CoO at high temperatures.[9]
Cobalt carbonate is a precursor to cobalt carbonyl and various cobalt salts. It is a component of dietary supplements since cobalt is an essential element . It is a precursor to blue pottery glazes, famously in the case of Delftware .
Related compounds [ edit ]
At least two cobalt(II ) carbonate-hydroxides are known: Co2 CO 3 OH )2 6 CO 3 2 OH )8 2 [10]
The moderately rare spherocobaltite is a natural form of cobalt carbonate, with good specimens coming especially from the Republic of Congo . "Cobaltocalcite" is a cobaltiferous calcite variety that is quite similar in habit to spherocobaltite.[6]
Toxicity has rarely been observed. Animals, including humans, require trace amounts of cobalt, a component of vitamin B12 .[5]
References [ edit ]
^ a b c d "Cobalt(II ) carbonate" .
^ a b c Sigma-Aldrich Co. , Cobalt(II ) carbonate . Retrieved on 2014-05-06.
^ a b c Donaldson, John Dallas; Beyersmann, Detmar (2005). "Cobalt and Cobalt Compounds". Ullmann's Encyclopedia of Industrial Chemistry doi :10.1002/14356007.a07_281.pub2 . ISBN 3527306730
^ a b "Spherocobaltite: Spherocobaltite mineral information and data" . www.mindat.org . Retrieved 7 August 2018 .
^ Pertlik, F. (1986). "Structures of hydrothermally synthesized cobalt(II ) carbonate and nickel(II ) carbonate". Acta Crystallographica Section C . 42 doi :10.1107/S0108270186097524 .
^ Bryant, Burl E.; Fernelius, W. Conard (1957). "Cobalt(III) Acetylacetonate". Inorganic Syntheses . pp. 188–189. doi :10.1002/9780470132364.ch53 . ISBN 9780470132364
^ G.A. El-Shobaky, A.S. Ahmad, A.N. Al-Noaimi and H.G. El-Shobaky Journal of Thermal Analysis and Calorimetry 1996, Volume 46, Number 6 , pp.1801-1808. online abstract
^ Bhojane, Prateek; Le Bail, Armel; Shirage, Parasharam M. (2019). "A Quarter of a Century After its Synthesis and with >200 Papers Based on its Use, 'Co(CO 3 0.5 (OH )0.11 H 2 O ′ Proves to be Co6 CO 3 2 OH )8 2 . Acta Crystallographica Section C: Structural Chemistry . 75 doi :10.1107/S2053229618017734 . PMID 30601132 . S2CID 58657483 .
External links [ edit ]
t
e
H 2 CO 3
He
Li 2 CO 3 LiHCO3
BeCO3
+BO3
(RO )(R'O)CO +C2 O 4
(NH 4 2 CO 3 ,NH 4 3 +NO3
O +F
Ne
Na 2 CO 3 NaHCO3 ,Na 3 CO 3 2 MgCO3 ,Mg(HCO3 2
Al 2 CO 3 3 SiCO4 ,+SiO4
P +SO4
+Cl
Ar
K 2 CO 3 KHCO3
CaCO3 ,Ca(HCO3 2
Sc Ti V CrCO3 ,Cr 2 CO 3 3 MnCO3
FeCO3
CoCO3 ,Co 2 CO 3 3 NiCO3
Cu 2 CO 3 CuCO3 , Cu 2 CO 3 OH )2 ZnCO3
Ga Ge As Se Br Kr
Rb 2 CO 3 SrCO3
Y Zr Nb Mo Tc Ru Rh PdCO3
Ag 2 CO 3 CdCO3
In Sn Sb Te I Xe
Cs 2 CO 3 CsHCO3
BaCO3
*
Lu 2 CO 3 3 Hf Ta W Re Os Ir Pt Au HgCO3
Tl 2 CO 3 PbCO3
(BiO)2 CO 3
Po(CO 3 2
At Rn
Fr RaCO3
**
Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
*
La 2 CO 3 3 Ce 2 CO 3 3 Pr 2 CO 3 3 Nd 2 CO 3 3 Pm Sm 2 CO 3 3 EuCO3 ,Eu 2 CO 3 3 Gd 2 CO 3 3 Tb 2 CO 3 3 Dy 2 CO 3 3 Ho 2 CO 3 3 Er 2 CO 3 3 Tm 2 CO 3 3 Yb 2 CO 3 3
**
Ac Th(CO 3 2
Pa UO 2 CO 3 Np Pu Am Cm Bk Cf Es Fm Md No
t
e
Cobalt(I )
Cobalt(II )
Cobalt(0, III)
Cobalt(II, III)
Cobalt(III)
Cobalt(III,IV)
Cobalt(IV )
Cobalt(V )
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Cobalt(II )_carbonate&oldid=1215229048 " C a t e g o r i e s : ● C o b a l t ( II ) c o m p o u n d s ● C a r b o n a t e s H i d d e n c a t e g o r i e s : ● C h e m i c a l a r t i c l e s w i t h m u l t i p l e c o m p o u n d I D s ● M u l t i p l e c h e m i c a l s i n a n i n f o b o x t h a t n e e d i n d e x i n g ● C h e m i c a l a r t i c l e s w i t h m u l t i p l e C A S r e g i s t r y n u m b e r s ● A r t i c l e s w i t h o u t E B I s o u r c e ● A r t i c l e s w i t h o u t K E G G s o u r c e ● A r t i c l e s w i t h c h a n g e d C h e m S p i d e r i d e n t i f i e r ● E C H A I n f o C a r d I D f r o m W i k i d a t a ● A r t i c l e s w i t h c h a n g e d I n C h I i d e n t i f i e r ● C h e m b o x h a v i n g G H S d a t a ● A r t i c l e s c o n t a i n i n g u n v e r i f i e d c h e m i c a l i n f o b o x e s ● C h e m b o x i m a g e s i z e s e t ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● C o m m o n s c a t e g o r y l i n k i s o n W i k i d a t a
● T h i s p a g e w a s l a s t e d i t e d o n 2 3 M a r c h 2 0 2 4 , a t 2 1 : 5 2 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
Y
[4]
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