Manganese(II) acetate

Manganese(II) acetate^[1]

Names
IUPAC name Manganese(II) acetate
Other names Manganese diacetate
Identifiers
CAS Number	638-38-0 (anhydrous) 6156-78-1 (tetrahydrate)
3D model (Jmol)	Interactive image
ChemSpider	12008
ECHA InfoCard	100.010.305
PubChem	12525
InChI InChI=1S/2C2H4O2.Mn/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 Key: UOGMEBQRZBEZQT-UHFFFAOYSA-L
SMILES CC([O-])=O.CC([O-])=O.[Mn+2]
Properties
Chemical formula	Mn(CH3COO)2 (anhydrous) Mn(CH3COO)2·4H2O (tetrahydrate)
Molar mass	173.027 g/mol (anhydrous) 245.087 g/mol (tetrahydrate)
Appearance	white crystals (anhydrous) light pink monoclinic crystals (tetrahydrate)
Density	1.74 g/cm^3 (anhydrous) 1.59 g/cm^3 (tetrahydrate)
Melting point	210 °C (410 °F; 483 K) (anhydrous) 80 °C (tetrahydrate)
Solubility	soluble in water, methanol, acetic acid (anhydrous) soluble in water, ethanol (tetrahydrate)
Hazards
NFPA 704	0 1 0
Flash point	> 130 °C (266 °F; 403 K) (tetrahydrate)
Lethal dose or concentration (LD, LC):
LD50 (median dose)	2940 mg/kg (rat, oral)[2]
Related compounds
Other anions	Manganese(II) fluoride Manganese(II) chloride Manganese(II) bromide
Other cations	Zinc acetate Mercury(II) acetate Silver acetate
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) acetate is the chemical compound with the formula Mn(CH₃COO)₂. It is used as a desiccant, a catalyst, and as fertilizer.^[3]

Reactions

Manganese(II) acetate can be formed by reacting acetic acid with either manganese(II,III) oxide or manganese(II) carbonate:^[3][4]

Mn₃O₄ + 2CH₃COOH → Mn(CH₃COO)₂ + Mn₂O₃ + H₂O

If manganese(II,III) oxide is used, manganese(III) oxide is produced as a byproduct.

If the anhydrous form needs to be produced, manganese(II) nitrate can be reacted with acetic anhydride.^[3]

References

1. Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 3–354, 4–68, ISBN 0-8493-0594-2
2. "Manganese compounds (as Mn)". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).
3. Thomas Scott; Mary Eagleson (1994), Concise encyclopedia chemistry, Walter de Gruyter, p. 620, ISBN 3-11-011451-8, retrieved 2009-07-20
4. Patnaik, Pradyot (2003), Handbook of Inorganic Chemical Compounds, McGraw-Hill Professional, pp. 81–82, ISBN 0-07-049439-8, retrieved 2009-07-20

Salts and the ester of the acetate ion
AcOH																	He
LiOAc	Be(OAc)2 BeAcOH											B(OAc)3	ROAc	NH4OAc	AcOAc	FAc	Ne
NaOAc	Mg(OAc)2											Al(OAc)3 ALSOL Al(OAc)2OH Al2SO4(OAc)4	Si	P	S	ClAc	Ar
KOAc	Ca(OAc)2	Sc(OAc)3	Ti(OAc)4	VO(OAc)3	Cr(OAc)2	Mn(OAc)2 Mn(OAc)3	Fe(OAc)2 Fe(OAc)3	Co(OAc)2, Co(OAc)3	Ni(OAc)2	Cu(OAc)2	Zn(OAc)2	Ga(OAc)3	Ge	As(OAc)3	Se	BrAc	Kr
RbOAc	Sr(OAc)2	Y(OAc)3	Zr(OAc)4	Nb	Mo(OAc)2	Tc	Ru(OAc)2 Ru(OAc)3 Ru(OAc)4	Rh2(OAc)4	Pd(OAc)2	AgOAc	Cd(OAc)2	In	Sn(OAc)2 Sn(OAc)4	Sb(OAc)3	Te	IAc	Xe
CsOAc	Ba(OAc)2		Hf	Ta	W	Re	Os	Ir	Pt(OAc)2	Au	Hg2(OAc)2, Hg(OAc)2	TlOAc Tl(OAc)3	Pb(OAc)2 Pb(OAc)4	Bi(OAc)3	Po	At	Rn
Fr	Ra		Rf	Db	Sg	Bh	Hs	Mt	Ds	Rg	Cn	Nh	Fl	Mc	Lv	Ts	Og
		↓
		La(OAc)3	Ce(OAc)x	Pr	Nd	Pm	Sm(OAc)3	Eu(OAc)3	Gd(OAc)3	Tb	Dy(OAc)3	Ho(OAc)3	Er	Tm	Yb(OAc)3	Lu(OAc)3
		Ac	Th	Pa	UO2(OAc)2	Np	Pu	Am	Cm	Bk	Cf	Es	Fm	Md	No	Lr