Difference between revisions of "Potassium tetraoxalate"
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White, slightly [[hygroscopic|hygroscopic]] crystals. Potassium tetroxalate is used as a water soluble source of [[oxalic%20acid|oxalic acid]] for removing of [[rust|rust]] stains and [[iron%20gall%20ink|iron gall inks]]. It is also used as a cleaner for metals and wood, as a [[mordant|mordant]] in dyeing and as a photographic chemical. | White, slightly [[hygroscopic|hygroscopic]] crystals. Potassium tetroxalate is used as a water soluble source of [[oxalic%20acid|oxalic acid]] for removing of [[rust|rust]] stains and [[iron%20gall%20ink|iron gall inks]]. It is also used as a cleaner for metals and wood, as a [[mordant|mordant]] in dyeing and as a photographic chemical. | ||
| − | + | [[[SliderGallery rightalign|potassium tetroxalate.jpg~Chemical structure]]] | |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
salts of lemon (incorrect); salt of sorrel; potassium quadoxalate; sal acetosella | salts of lemon (incorrect); salt of sorrel; potassium quadoxalate; sal acetosella | ||
| − | [ | + | == Risks == |
| + | |||
| + | * Toxic by ingestion. | ||
| + | * Sigma Aldrich: [https://www.sigmaaldrich.com/US/en/product/saj/245700 SDS] | ||
| − | == | + | ==Physical and Chemical Properties== |
| − | Soluble in water. Insoluble in ethanol | + | * Soluble in water. Insoluble in ethanol |
| + | * Decomposes when heated. | ||
{| class="wikitable" | {| class="wikitable" | ||
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| − | == | + | ==Resources and Citations== |
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* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, ''Technology and Conservation'', Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985 | * Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, ''Technology and Conservation'', Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985 | ||
Latest revision as of 11:47, 25 August 2022
Description
White, slightly Hygroscopic crystals. Potassium tetroxalate is used as a water soluble source of Oxalic acid 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
salts of lemon (incorrect); salt of sorrel; potassium quadoxalate; sal acetosella
Risks
- Toxic by ingestion.
- Sigma Aldrich: SDS
Physical and Chemical Properties
- Soluble in water. Insoluble in ethanol
- Decomposes when heated.
| Composition | KHC2O4 - H2C2O4 |
|---|---|
| CAS | 127-96-8 |
| Molecular Weight | mol. wt. = 254.2 |
Resources and Citations
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
- Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
- The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 7863