Nickel(II) carbonate

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Nickel(II) carbonate
Nickel(II) carbonate
Identifiers
CAS number 3333-67-3 YesY
29863-10-3 (Ni4CO3(OH)6(H2O)4)
PubChem 18746
ChemSpider 17701 YesY
EC number 222-068-2
UN number 3288
RTECS number QR6200000
Jmol-3D images Image 1
Properties
Molecular formula CNiO3
Molar mass 118.70 g mol−1
Appearance light green powder
Density 4.39 g/cm3
Melting point 205 °C (401 °F; 478 K)
decomposes[1]
Solubility in water 0.0093 g/100ml
Solubility product, Ksp 1.42·10-7
Structure
Crystal structure rhombohedral
Hazards
MSDS ICSC 0927
GHS pictograms The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)The health hazard pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)[2]
GHS signal word Danger
GHS hazard statements H302, H312, H332, H315, H317, H319, H334, H335, H350[2]
GHS precautionary statements P201, P261, P280, P305+351+338, P308+313[2]
EU Index 028-010-00-0
EU classification Toxic THarmful XnIrritant XiDangerous for the Environment (Nature) N
Carc. Cat. 1
Muta. Cat. 3
Repr. Cat. 2
R-phrases R20/21/22, R36/37/38, R42/43, R45, R48/23, R49, R50/53, R61, R68
S-phrases S26, S36/37/39, S53, S45, S60, S61
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
LD50 840 mg/kg
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

Nickel(II) carbonate describes one or a mixture of inorganic compounds containing nickel and carbonate. From the industrial perspective, the most important nickel carbonate is basic nickel carbonate with the formula Ni4CO3(OH)6(H2O)4. Simpler carbonates, ones more likely encountered in the laboratory, are NiCO3 and its hexahydrate. All are paramagnetic green solid containing Ni2+ cations. The basic carbonate is an intermediate in the hydrometallurgical purification of nickel from its ores and is used in electroplating of nickel.[3]

Reactions[edit]

Nickel carbonates are hydrolyzed upon contact with aqueous acids to give solutions containing the ion [Ni(H2O)6]2+, liberating water and carbon dioxide in the process. Calcining (heating to drive off CO2 and water) of these carbonates gives nickel oxide:

NiCO3 → NiO + CO2

The nature of the resulting oxide depends on the nature of the precursor. The oxide obtained from the basic carbonate is often most useful for catalysis.

Basic nickel carbonate can be made by treating solutions of nickel sulfate with sodium carbonate, shown here for the basic carbonate:

4 Ni2+ + CO32- + 6 OH- + 4 H2O → Ni4CO3(OH)6(H2O)4

The hydrated carbonate has been prepared by electrolytic oxidation of nickel in the presence of carbon dioxide:[4]

Ni + O + CO2 + 6 H2O → NiCO3(H2O)4

Uses[edit]

Nickel carbonates are used in some ceramic applications and as precursors to catalysts.

Safety[edit]

It is moderately toxic and causes irritation. Avoid prolonged contact.

References[edit]

  1. ^ https://www.conncoll.edu/media/website-media/offices/ehs/envhealthdocs/Nickel_Carbonate.pdf
  2. ^ a b c Sigma-Aldrich Co., Nickel(II) carbonate hydroxide tetrahydrate. Retrieved on 2014-05-06.
  3. ^ Keith Lascelles, Lindsay G. Morgan, David Nicholls, Detmar Beyersmann, "Nickel Compounds" in Ullmann's Encyclopedia of Industrial Chemistry Wiley-VCH, Weinheim, 2005. doi:10.1002/14356007.a17_235.pub2
  4. ^ Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. p. 1557.
H2CO3 He
LiCO3 BeCO3 B C (NH4)2CO3,
NH4HCO3
O F Ne
Na2CO3,
NaHCO3,
Na3H(CO3)2
MgCO3,
Mg(HCO3)2
Al2(CO3)3 Si P S Cl Ar
K2CO3,
KHCO3
CaCO3,
Ca(HCO3)2
Sc Ti V Cr MnCO3 FeCO3 CoCO3 NiCO3 CuCO3 ZnCO3 Ga Ge As Se Br Kr
Rb2CO3 SrCO3 Y Zr Nb Mo Tc Ru Rh Pd Ag2CO3 CdCO3 In Sn Sb Te I Xe
Cs2CO3,
CsHCO3
BaCO3   Hf Ta W Re Os Ir Pt Au Hg Tl2CO3 PbCO3 (BiO)2CO3 Po At Rn
Fr Ra   Rf Db Sg Bh Hs Mt Ds Rg Cn Uut Fl Uup Lv Uus Uuo
La2(CO3)3 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Ac Th Pa UO2CO3 Np Pu Am Cm Bk Cf Es Fm Md No Lr