Tin(II) 2-ethylhexanoate

Tin(II) 2-ethylhexanoate or tin(II) octoate or stannous octoate (Sn(Oct)₂)^[1] is the octaoate or 2-ethylhexanoate salt of tin. Produced by the reaction of tin(II) oxide and 2-ethylhexanoic acid, it is a clear colorless liquid at room temperature, though often appears yellow due to impurities, likely resulting from oxidation of Sn(II) to Sn(IV).^[2]

Tin(II) 2-ethylhexanoate

Names
IUPAC name Tin(2+) bis(2-ethylhexanoate)
Identifiers
CAS Number	301-10-0 Y
3D model (JSmol)	Interactive image
ChemSpider	8957
ECHA InfoCard	100.005.554
PubChem CID	16689712
UNII	519A78R12Y Y
CompTox Dashboard (EPA)	DTXSID1027138
InChI InChI=1S/2C8H16O2.Sn/c2*1-3-5-6-7(4-2)8(9)10;/h2*7H,3-6H2,1-2H3,(H,9,10);/q;;+2/p-2
SMILES CCCCC(CC)C(=O)[O-].CCCCC(CC)C(=O)[O-].[Sn+2]
Properties
Chemical formula	C16H30O4Sn
Molar mass	405.122 g·mol−1
Appearance	Yellow liquid
Density	1.251 g/cm3
Melting point	< 0 °C (32 °F; 273 K)
Boiling point	~ 130 to 150 °C (266 to 302 °F; 403 to 423 K) at 30 mTorr
Solubility in water	Degrades in water to form Sn(IV)
Hazards
Flash point	113 °C (235 °F; 386 K) closed cup
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

It is sometimes used as a catalyst for ring-opening polymerization, such as for the production of polylactic acid.^[3]