Potassium oxalate is an inorganic potassium salt of oxalic acid that occurs as a white crystalline compound. It is represented by the formula K₂C₂O₄·H₂O and serves as a source of oxalate ions in aqueous chemical systems. Its oxalate component readily combines with metal ions and can form stable complexes or less-soluble oxalate salts. A characteristic feature of potassium oxalate is its interaction with metals such as calcium, iron and magnesium, including the formation of insoluble calcium oxalate. These properties make potassium oxalate particularly useful reagent in analytical chemistry for the determination of metal ions.
CAS No.: 6487-48-5
Synonyms: Potassium oxalate monohydrate, ethanedioic acid, dipotassium salt, potassium neutral oxalate, dipotassium oxalate, oxalic acid dipotassium salt.
| Physical Properties | |
| Chemical formula | K2C2O4.H2O |
| IUPAC Name | dipotassium;oxalate;hydrate |
| Molecular weight | 184.23 g/mol |
| Solubility | Soluble in water |
| Density | 2.127 g/cm3 |
| Appearance | Colorless to white crystalline solid |
| Chemical Properties | |
| Color | Colorless to white |
| Physical State | Solid |
| Melting Point | 160 °C  |
| Ph Value | 7-8.5Â |
| Odor | Odorless |
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| Pictograms : |  |
| Hazard Statements : | H302+H312 – Harmful if swallowed or in contact with skin. |
| Precautionary Statements: | P280: Wear protective gloves, protective clothing, eye protection, face protection. P301+P312: IF SWALLOWED: Call a POISON CENTRE or doctor if you feel unwell. P302+P352: IF ON SKIN: Wash with plenty of water. |
Potassium oxalate is an inorganic potassium salt of oxalic acid that occurs as a white crystalline compound. It is represented by the formula K₂C₂O₄·H₂O and serves as a source of oxalate ions in aqueous chemical systems. Its oxalate component readily combines with metal ions and can form stable complexes or less-soluble oxalate salts. A characteristic feature of potassium oxalate is its interaction with metals such as calcium, iron and magnesium, including the formation of insoluble calcium oxalate. These properties make potassium oxalate particularly useful reagent in analytical chemistry for the determination of metal ions.
CAS No.: 6487-48-5
Synonyms: Potassium oxalate monohydrate, ethanedioic acid, dipotassium salt, potassium neutral oxalate, dipotassium oxalate, oxalic acid dipotassium salt.
| Physical Properties | |
| Chemical formula | K2C2O4.H2O |
| IUPAC Name | dipotassium;oxalate;hydrate |
| Molecular weight | 184.23 g/mol |
| Solubility | Soluble in water |
| Density | 2.127 g/cm3 |
| Appearance | Colorless to white crystalline solid |
| Chemical Properties | |
| Color | Colorless to white |
| Physical State | Solid |
| Melting Point | 160 °C  |
| Ph Value | 7-8.5Â |
| Odor | Odorless |
Â
| Pictograms : | |
| Hazard Statements : | H302+H312 – Harmful if swallowed or in contact with skin. |
| Precautionary Statements: | P280: Wear protective gloves, protective clothing, eye protection, face protection. P301+P312: IF SWALLOWED: Call a POISON CENTRE or doctor if you feel unwell. P302+P352: IF ON SKIN: Wash with plenty of water. |
Potassium Oxalate has the chemical formula K₂C₂O₄. The monohydrate form is written as K₂C₂O₄·H₂O shows that each formula unit contains one molecule of water of crystallization.
Potassium oxalate monohydrate is used as a laboratory reagent for titrations and metal-ion analysis. It also functions as an in vitro anticoagulant by binding calcium. Other applications include its use as a chelating and reducing agent, textile dyeing assistant, photographic chemical, and surface treatment or rust-removal agent.
Potassium Oxalate Monohydrate is soluble in water where it dissociates to provide potassium and oxalate ions. The oxalate ions can react with certain metal ions to form less-soluble oxalate salts.
Potassium oxalate is also known as dipotassium oxalate or oxalic acid dipotassium salt. Its monohydrate form may be called dipotassium oxalate monohydrate or oxalic acid dipotassium salt monohydrate. The systematic name is ethanedioic acid dipotassium salt monohydrate.Â
