Manganese(II) hydroxide

Manganese(II) hydroxide
Names
	Other names Manganese dihydroxide, manganese hydroxide, Manganous hydroxide, Pyrochroite
Identifiers
CAS Number	18933-05-6; 1310-97-0;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:143901;
ChemSpider	66594;
ECHA InfoCard	100.126.826
EC Number	606-171-3;
PubChem CID	73965;
CompTox Dashboard (EPA)	DTXSID10940448 DTXSID6061656, DTXSID10940448 ;
	InChI InChI=1S/Mn.2H2O/h;2*1H2/q+2;;/p-2 Key: IPJKJLXEVHOKSE-UHFFFAOYSA-L;
	SMILES [OH-].[OH-].[Mn+2];
Properties
Chemical formula	H2MnO2
Molar mass	88.952 g·mol−1
Appearance	white to pink solid
Density	3.258 g/cm3
Melting point	140 °C (284 °F; 413 K) decomposes
Solubility in water	0.00034 g/100 mL at 18 °C.
Solubility	soluble in acid
Refractive index (nD)	1.68
Structure
Crystal structure	hexagonal
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Manganese(II) hydroxide is the inorganic compound with the formula Mn (OH)₂. It is a white solid although samples darken quickly upon exposure to air owing to oxidation. It is poorly soluble in water.

^ Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.

[1] Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.

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