Ferrous Oxalate

Alternate Names: Fe (II) Oxalate Dihydrate

Description: FeC2O₄ - 2H₂O

Oxide	Analysis	Formula
FeO	36.70%	1.00
LOI	63.29%	n/a
Oxide Weight		81.80
Formula Weight		222.83

Notes

CAS #: 6047-25-2
Formula weight: 179.90 (Anhydrous FW: 143.87)
Somewhat hygroscopic -- keep in sealed container.

This material is being researched by Jon Singer as a secret to the production of a copper red glaze. His comments are:

-Oxalic acid sublimes at 157C.
-This is Ferrous, so if you knock off the waters and the oxalic acid you get FeO, FW 71.844.
The LOI should be 60.06%.
-There is reason to believe that this material causes some _in-situ_ reduction.
-If I make a Copper Red glaze with this stuff, it reds up beautifully; if I make essentially the same
glaze with FeO, it mostly just turns pink. OTOH, that could be caused by some other kind
of magic going on.)

Related Information

Links

Typecodes	Colorant Metallic based materials that impart fired color to glazes and bodies.

Data

Decomposition Temperature	190C (Alfa) or 150C (CRC Handbook)
Density (Specific Gravity)	2.28

By Tony Hansen
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