HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dipotassium Oxalate
Potassium oxalate · DIPTASSIUMOXALATE · ipotassium,oxalate · DI-POTASSIUM OXALATE · dipotassiumethanedioate · potassiumneutraloxalate · Oxalic acid dipotassium · potassiumoxalate(k2c2o4)
Identifiers & Physical Properties
| CAS No. | 583-52-8 |
|---|---|
| Molecular formula | C2K2O4 |
| Average molar mass | 166.22 g/mol |
| Monoisotopic mass | 165.90707145 g/mol |
| SMILES | O=C([O-])C(=O)[O-].[K+].[K+] |
| InChIKey | IRXRGVFLQOSHOH-UHFFFAOYSA-L |
| PubChem CID | 11413 |
| EC No. | 209-506-8 |
| DTXSID | DTXSID6060393 |
Chemical & Physical Properties
| Topological polar surface area | 80.3 |
|---|---|
| Hydrogen bond donors | 0 |
| Hydrogen bond acceptors | 4 |
| Rotatable bonds | 0 |
| Heavy atoms | 8 |
| Formal charge | 0 |
| Complexity | 60 |
| Density | 2.08 @25 °C2.13 |
| Physical Description | Colorless odorless solidEfflorescent in warm dry air[Merck Index] White crystals or chunks[Integra MSDS] |
| Solubility | slightly soluble in H2O392g/L at 20℃ |
| Color | white pwd |
| Odor | odorless |
| Cosmetics Ingredients Functions | ANTICORROSIVECHELATING |
| InChI | InChI=1S/C2H2O4.2K/c3-1(4)2(5)6/h(H,3,4)(H,5,6)/q2*+1/p-2 |
| InChIKey | IRXRGVFLQOSHOH-UHFFFAOYSA-L |
| SMILES | C([O-])(=O)C([O-])=O.[K+].[K+] |
| CAS DataBase Reference | 583-52-8(CAS DataBase Reference) |
| FDA UNII | LC7F2W7I5B |
| EPA Substance Registry System | Ethanedioic acid, potassium salt (1:2) (583-52-8) |
| GHS pictogram | GHS07 |
| Signal word | Warning |
| GHS hazard statements | H312-H302-H319 |
| GHS precautionary statements | P264-P270-P301+P312-P330-P501-P280-P302+P352-P312-P322-P363-P501-P264-P280-P305+P351+P338-P337+P313P |
| TSCA inventory status | TSCA listed |
| REACH registrations | Active |
Safety & Regulations
| GHS classification | WarningH302+H312 (42%): Harmful if swallowed or in contact with skin [Warning Acute toxicity, oralacute toxicity, dermal]H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]H312 (100%): Harmful in contact with skin [Warning Acute toxicity, dermal]H319 (60.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]P264, P264+P265, P270, P280, P301+P317, P302+P352, P305+P351+P338, P317, P321, P330, P337+P317, P362+P364, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 300 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. |
|---|---|
| Regulatory information | Chemical: Ethanedioic acid, dipotassium saltStatus: Active Update: 08-10-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/22576Ethanedioic acid, dipotassium salt: Does not have an individual approval but may be used under an appropriate group standard |
| Other safety information | IMAP assessments - Ethanedioic acid, dipotassium salt: Environment tier I assessmentIMAP assessments - Oxalic acid soluble salts: Human health tier II assessment |
| Hazards summary | Occurs as the monohydratePoisonous[Merck Index] Dust is irritating to eyes, nose, and throatInhalation may cause systemic poisoningIngestion may cause cardiovascular collapse and delayed neuromuscular symptoms[CHRIS] Caused arrhythmias and shock in women at lowest lethal dose of 1000 mg/kg[RTECS] May cause severe irritation or burns to skinMay cause burns or injury to eyesA nose, throat, and respiratory tract irritantHeavy inhalation exposure may cause coughing, difficulty breathing, and chest painsChronic overexposure may lead to kidney injuryToxic by ingestion and inhalationTargets kidneys and nervous system[Integra MSDS] |
| Hazard Classes and Categories | Acute Tox. 4 (100%)Eye Irrit. 2 (60.7%)Acute toxicity - category 4Eye damage - category 1Skin irritation - category 2Specific target organ toxicity (single exposure) - category 3Specific target organ toxicity (repeated exposure) - category 2Acute toxicity (Oral) - Category 4 |
| Protective Action Criteria (PAC) | 9.5 [mg/m3]100 [mg/m3]630 [mg/m3] |
| Adverse effects | Dermatotoxin - Skin burns. |
| TSCA inventory status | TSCA listed |
| Signal word | Warning |
| GHS pictogram | GHS07 |
| GHS hazard statements | H312-H302-H319 |
| REACH registrations | Active |
| GHS precautionary statements | P264-P270-P301+P312-P330-P501-P280-P302+P352-P312-P322-P363-P501-P264-P280-P305+P351+P338-P337+P313P |
Applications & Uses
Uses
Potassium oxalate is a white crystal or powder made by neutralizing oxalic acid with potassium carbonate. It is soluble in water 1:3 but not in alcohol. Potassium oxalate was used as an early developer for gelatin plates but is best known as the developer for platinum prints.
Uses
Cleaning and bleaching straw, removing stains in photography; in vitro blood anticoagulant; also in analytical chemistry.
General Description
Potassium oxalate, K2C204, H20, is odorless, efforescent, water-soluble, colorless crystals that decompose when heated. Sinks in and mixes slowly with water. Used in analytical chemistry and photography, and as a bleach and oxalic acid source.
Preparation & Synthesis
Preparation
Oxalic acid is the main raw material for the preparation of potassium oxalate. It is prepared by reacting potassium carbonate with oxalic acid. The reaction equation is: K₂CO₃ + H₂C₂O₄ = K₂C₂O₄ + CO₂↑ + H₂O.