Ferrous Oxalate
FeC2O4 - 2H2O
Chemistry
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Volatiles
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Miscellaneous
- Family: Colorant
- Region: None
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
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.)
Data
- Density: 2.28
- Decomposition Temp: 190C (Alfa) or 150C (CRC Handbook)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="Ferrous Oxalate" descrip="FeC2O4 - 2H2O" generic="0" rawmineral="0" searchkey="Fe (II) Oxalate Dihydrate" loi="0.00">
<families>
<family name="Colorant"/>
</families>
<oxides>
<oxide symbol="FeO" name="Ferrous Oxide" status="" percent="36.700" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="63.290" tolerance=""/>
</volatiles>
<notes>
<note>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.)</note>
</notes>
<testdata>
<testitem testname="0" value="2.28"/>
<testitem testname="0" value="190C (Alfa) or 150C (CRC Handbook)"/>
</testdata>
</material>
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