Potassium oxalate
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Description
Transparent, odorless crystals. Potassium oxalate is used as a water soluble source of oxalate for removing of rust stains and iron gall inks. It is also used as a cleaner for metals and wood, as a mordant in dyeing and as a photographic chemical.
Synonyms and Related Terms
oxalate of potash
Risks
- Toxic by ingestion and inhalation.
- Skin contact may cause irritation.
- Fisher Scientific: MSDS
Physical and Chemical Properties
Soluble in water. Insoluble in ethanol. Decomposes when heated to form potassium carbonate.
| Composition | K2C2O4 - H2O |
|---|---|
| CAS | 6487-48-5 |
| Density | 2.08 g/ml |
| Molecular Weight | mol. wt. = 166.22 |
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7820
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- Photographic chemicals: www.jetcity.com/~mrjones/chemdesc.htm