Silver oxalate

Silver oxalate
Names
	IUPAC name Silver(I) ethanedioate
	Other names Silver Ethanedioate, Silver Salt; Argentous oxalate ; Silver(I) oxalate
Identifiers
CAS Number	533-51-7 ;
3D model (JSmol)	Interactive image ;
ChemSpider	56153 ;
ECHA InfoCard	100.007.791
EC Number	208-568-3;
PubChem CID	62364 ;
RTECS number	RO2900000;
UNII	NE0L2ZGZ13 ;
CompTox Dashboard (EPA)	DTXSID90201448 ;
	InChI InChI=1S/C2H2O4.2Ag/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2+1/p-2 Key: XNGYKPINNDWGGF-UHFFFAOYSA-L ; InChI=1/C2H2O4.2Ag/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2+1/p-2 Key: XNGYKPINNDWGGF-NUQVWONBAW;
	SMILES [Ag+].[Ag+].[O-]C(=O)C([O-])=O;
Properties
Chemical formula	Ag; 2C; 2O; 4
Molar mass	303.755 g/mol
Appearance	white powder
Density	5.03 g/cm3
Melting point	961.9 °C (1,763.4 °F; 1,235.0 K) (decomposes)
Boiling point	2,212 °C (4,014 °F; 2,485 K) at 1013.25 hPa
Solubility in water	3.270*10−3 g/100mL
Solubility product (Ksp)	5.4×10−12
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Harmful if swallowed
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H201, H302, H312, H410
Precautionary statements	P210, P230, P240, P250, P264, P270, P273, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, P370+P380, P372, P373, P391, P401, P501
Safety data sheet (SDS)	External MSDS
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Last updated February 26, 2026

Silver oxalate is a silver salt of oxalic acid with the chemical formula Ag^₂C^₂O^₄. It is sensitive to light, decomposing to metallic silver and carbon dioxide.^[3]

Production

Silver oxalate is produced by the reaction between silver nitrate and oxalic acid, or from combining solutions of silver nitrate and sodium oxalate.^[3]

Uses

It is commonly employed in experimental petrology to add carbon dioxide (CO^₂) to experiments as it will break down to silver (Ag) and carbon dioxide under geologic conditions.^[4]^{[ clarification needed ]}^{[ better source needed ]}

It is also a precursor to the production of silver nanoparticles.^{[ citation needed ]}

Safety

It is explosive upon heating around 140 °C (284 °F) and the dry material may explode when ground.^[5]

References

↑ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1138561632.
↑ PubChem. "Silver oxalate". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-02-26.
1 2 E. H. E. Pietsch, A. Kotowski et al. (1975), Gmelin Handbuch der Anorganischen Chemie, Silber Teil B5, 8th edition, p. 148-149, 161
↑ Silver Oxalate at American Elements
↑ Silver Oxalate MSDS sheet Archived 2013-12-12 at the Wayback Machine at mpbio

External links

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[crc-1] John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1138561632.

[2] PubChem. "Silver oxalate". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-02-26.

[Gmelin_handbook-3] 1 2 E. H. E. Pietsch, A. Kotowski et al. (1975), Gmelin Handbuch der Anorganischen Chemie, Silber Teil B5, 8th edition, p. 148-149, 161

[4] Silver Oxalate at American Elements

[5] Silver Oxalate MSDS sheet Archived 2013-12-12 at the Wayback Machine at mpbio

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