Tin(II) acetate

Tin(II) acetate is the acetate salt of tin(II), with the chemical formula of Sn(CH₃COO)₂. It was first discovered in 1822.^[1]

Tin(II) acetate

Names
Other names Tin diacetate
Identifiers
CAS Number	638-39-1 Y
3D model (JSmol)	Interactive image disolvate: Interactive image
ChemSpider	62694
ECHA InfoCard	100.010.306
EC Number	211-335-9
PubChem CID	69488
UNII	1SKU167W8P
CompTox Dashboard (EPA)	DTXSID30213242
InChI InChI=1S/2C2H4O2.Sn/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 Key: PNOXNTGLSKTMQO-UHFFFAOYSA-L disolvate: InChI=1S/4C2H4O2.Sn/c4*1-2(3)4;/h4*1H3,(H,3,4);/q;;;;+2/p-2 Key: ANPGXPGHNRPKFA-UHFFFAOYSA-L
SMILES CC(=O)[O-].CC(=O)[O-].[Sn+2] disolvate: CC(=O)O.CC(=O)O.CC(=O)[O-].CC(=O)[O-].[Sn+2]
Properties
Chemical formula	Sn(CH3COO)2
Molar mass	236.80
Appearance	white crystals
Density	2.310 g·cm−3
Melting point	182.75 °C (360.95 °F; 455.90 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

To obtain tin(II) acetate, tin(II) oxide is dissolved in glacial acetic acid and refluxed to obtain yellow Sn(CH₃COO)₂·2CH₃COOH when cooled. The acetic acid can be removed by heating under reduced pressure, and the white Sn(CH₃COO)₂ crystals can be obtained by sublimation.^[1]

Properties

Sn(CH₃COO)₂·2CH₃COOH undergoes disproportionation and decomposition when heated under normal pressure, and products such as tin(IV) oxide and hydrogen are generated. The decomposition of anhydrous Sn(CH₃COO)₂ is to the blue-black tin(II) oxide.^[2]

Anhydrous Sn(CH₃COO)₂ decomposes in water,^[2] but complexes such as KSn(CH₃COO₂)₃ and Ba[Sn(CH₃COO)₃]₂ can be formed in alkali metal or alkaline earth metal acetates.^[3]