Manganese(II) nitrate

Manganese(II) nitrate

Names
Systematic IUPAC name Manganese(II) nitrate
Other names Manganese dinitrate
Identifiers
CAS Number	10377-66-9 20694-39-7 (tetrahydrate) 17141-63-8 (hexahydrate)
ChemSpider	55431
EC Number	233-828-8
Jmol interactive 3D	Image
PubChem	61511
UN number	2724
InChI InChI=1S/Mn.2NO3/c;2*2-1(3)4/q+2;2*-1 Key: MIVBAHRSNUNMPP-UHFFFAOYSA-N InChI=1/Mn.2NO3/c;2*2-1(3)4/q+2;2*-1 Key: MIVBAHRSNUNMPP-UHFFFAOYAV
SMILES [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Mn+2]
Properties
Chemical formula	Mn(NO3)2
Molar mass	178.95 g/mol
Appearance	white powder
Density	1.536 g/cm^3
Melting point	37 °C (99 °F; 310 K)
Boiling point	100 °C (212 °F; 373 K)
Solubility in water	high
Related compounds
Other anions	Manganese chloride
Other cations	Magnesium nitrate Calcium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Manganese(II) nitrate is an inorganic compound with formula Mn(NO₃)₂. Each formula unit is composed of one Mn²⁺ cation and two NO₃⁻ anions and varying amounts of water. Most common is the tetrahydrate Mn(NO₃)₂·4H₂O, but mono- and hexahydrates are also known as well as the anhydrous compound. Some of these compounds are useful precursors to the oxides of manganese.^[1]

Preparation

Manganese(II) nitrate can be prepared by dissolving manganese(II) carbonate in dilute nitric acid:

MnCO₃ + 2 HNO₃ → Mn(NO₃)₂ + H₂O + CO₂

It can also be prepared from manganese dioxide and nitrogen dioxide.^[1]

Properties

On heating to 300°C, aqueous solutions of manganese(II) nitrate thermally decompose to form MnO₂ and NO₂ as products. Upon further heating, the MnO₂ loses oxygen to form Mn₂O₃ and eventually Mn₃O₄.

References

1. Arno H. Reidies, "Manganese Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a16_123

Salts and covalent derivatives of the Nitrate ion
HNO3																	He
LiNO3	Be(NO3)2											B(NO3)4^−	C	N	O	FNO3	Ne
NaNO3	Mg(NO3)2											Al(NO3)3	Si	P	S	ClONO2	Ar
KNO3	Ca(NO3)2	Sc(NO3)3	Ti(NO3)4	VO(NO3)3	Cr(NO3)3	Mn(NO3)2	Fe(NO3)3	Co(NO3)2, Co(NO3)3	Ni(NO3)2	Cu(NO3)2	Zn(NO3)2	Ga(NO3)3	Ge	As	Se	Br	Kr
RbNO3	Sr(NO3)2	Y	Zr(NO3)4	Nb	Mo	Tc	Ru	Rh	Pd(NO3)2	AgNO3	Cd(NO3)2	In	Sn	Sb	Te	I	Xe(NO3)2
CsNO3	Ba(NO3)2		Hf	Ta	W	Re	Os	Ir	Pt	Au	Hg2(NO3)2, Hg(NO3)2	Tl(NO3)3	Pb(NO3)2	Bi(NO3)3	Po	At	Rn
Fr	Ra		Rf	Db	Sg	Bh	Hs	Mt	Ds	Rg	Cn	Uut	Fl	Uup	Lv	Uus	Uuo
		↓
		La	Ce(NO3)3, Ce(NO3)4	Pr	Nd	Pm	Sm	Eu	Gd(NO3)3	Tb	Dy	Ho	Er	Tm	Yb	Lu
		Ac	Th	Pa	UO2(NO3)2	Np	Pu	Am	Cm	Bk	Cf	Es	Fm	Md	No	Lr