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Barium nitrite
Names
Preferred IUPAC name
Barium nitrite
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.358 👁 Edit this at Wikidata
EC Number
  • 236-709-9
UNII
  • InChI=1S/Ba.2HNO2/c;2*2-1-3/h;2*(H,2,3)/q+2;;/p-2
    Key: GJTDJAPHKDIQIQ-UHFFFAOYSA-L
  • N(=O)[O-].N(=O)[O-].[Ba+2]
Properties
Ba(NO2)2
Molar mass 229.34 g/mol
Appearance white (anhydrous)[1]
white to yellowish (monohydrate)[1]
Density 3.234 g/cm3 (anhydrous)[1]
3.173 g/cm3 (monohydrate)[1]
Melting point 267 °C (anhydrous)[1]

217 °C decomposes[1] (monohydrate)

anhydrous
675 g/L (20 °C)[1]
monohydrate
548 g/L (0 °C)[1]
3190 g/L (100 °C)[1]
Solubility anhydrous
slightly soluble in ethanol[1]
monohydrate
soluble in ethanol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Toxic
GHS labelling:
👁 GHS07: Exclamation mark
Warning
H302, H332
P261, P264, P270, P271, P301+P317, P304+P340, P317, P330, P501
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Barium nitrite is a chemical compound with the formula Ba(NO2)2, the nitrous acid salt of barium. It is a water-soluble white to yellowish powder.[1] It is used to prepare other metal nitrites, such as lithium nitrite.

Synthesis

[edit]

Barium nitrite can be prepared by reacting barium nitrate with lead metal sponge, or by reaction of lead nitrite with barium chloride.[2]

The monohydrate can be crystallized from a stoichiometric solution of barium chloride and sodium nitrite.[1]

References

[edit]
  1. ^ a b c d e f g h i j k l Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. p. 54. ISBN 978-1-4398-1462-8.
  2. ^ Schlessinger GG (1962). Inorganic laboratory preparations. pp. 34–35.
Salts and covalent derivatives of the nitrite ion
HNO2 He
LiNO2 Be(NO2)2 B C(NO2)4
CH(NO2)3
CH2(NO2)2
CH3(NO2) 		N2O3 NO2F Ne
NaNO2 Mg(NO2)2 Al(NO2)3 Si P S NO2Cl Ar
KNO2 Ca(NO2)2 Sc(NO2)3 Ti VO(NO2)3 Cr(NO2)3 Mn(NO2)2 Fe(NO2)3 Co(NO2)2
Co(NO2)3 		Ni(NO2)2 Cu(NO2)2 Zn(NO2)2 Ga(NO2)3 Ge As Se NO2Br Kr
RbNO2 Sr(NO2)2 Y(NO2)3 Zr Nb Mo Tc Ru Rh Pd(NO2)2 AgNO2 Cd(NO2)2 In Sn Sb Te NO2I Xe
CsNO2 * Lu Hf Ta W Re Os Ir Pt(NO2)2
[Pt(NO2)4]2− 		Au Hg2(NO2)2
Hg(NO2)2 		TlNO2 Pb(NO2)2 Bi(NO2)3
BiO(NO2) 		Po At Rn
Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
* La(NO2)3 Ce(NO2)3 Pr(NO2)3 Nd(NO2)3 Pm Sm(NO2)3 Eu(NO2)2 Gd(NO2)3 Tb Dy Ho Er Tm Yb
** Ac Th Pa UO2(NO2)2 Np Pu Am Cm Bk Cf Es Fm Md No
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