基本情報
- CAS
127-96-8- 標準SMILES
O=C(O)C(=O)O.O=C([O-])C(=O)O.[K+]- InChIKey
GANDVAJEIJXBQJ-UHFFFAOYSA-M- 分子式
- C4H3KO8
- 平均分子量
- 218.16 g/mol
- 単同位体質量
- 217.94649853
概要
See also: Potassium trihydrogen dioxalate, dihydrate (annotation moved to).
名称と識別子
- 優先名称
- Ethanedioic acid, potassium salt (2:1)
- IUPAC
- potassium;2-hydroxy-2-oxoacetate;oxalic acid
- 現地名
- しゅう酸/カリウム,(2:1)
- 英語名
- potassium trihydrogen dioxalate
- 分子式
- C2H4K2O6
- 分子量
- 202.24616
名称と別名
Potassium trihydrogen dioxalatePotassium Tetraoxalate127-96-8Ethanedioic acid, potassium salt (2:1)UNII-OQ8R5Z714TPotassium tetraoxalate dihydrateOxalic acid hemipotassium saltKaliumtetraoxalatC4H3KO8SCHEMBL5517108DTXSID30889421MFCD00036364
名称をさらに表示
しゅう酸/カリウム,(2:1)四しゅう酸カリウムシュウ酸カリウム （２：１）Einecs 204-874-6Tetraoxalate potassiumPotassium Oxalate, >98%Potassium hydrogen oxalaPotassiumTetraoxalateA.R.POTASSIUMTETRAOXALATE,REAGENTPotassiumOxalateK2C2O4*H2O>98%Potassium trihydrogen oxalate?Oxalic acid potassium salt (2:1)
P0475potassium;2-hydroxy-2-oxoacetate;oxalic acidpotassium;2-hydroxy-2-oxo-acetate;oxalic acidQ9352834Potassium hydrogen ethanedioate--oxalic acid (1/1/1)
データベース識別子
物性
構造計算による物性
- 極性表面積
- 152 Ų
- 水素結合供与体数
- 3
- 水素結合受容体数
- 8
- 回転可能結合数
- 2
- 重原子数
- 13
- 形式電荷
- 0
- 複雑度
- 159
実験および物理化学的性質
Chemical ClassesMetals -> Organic Acids, Metal Salts
Physical DescriptionDihydrate: Colorless or white solid; [Merck Index] Colorless or white crystals; [Mallinckrodt Baker MSDS]
物理化学的性質
- 融点
- 10 · decomposes [CRC10]
- 比重(密度)
- 1.875 · 1.875[at 20℃]
- 蒸気圧
- 0 Pa · 0Pa at 20℃
- 水溶解度
- 60 · 可溶性 冷水 60 部、沸騰水 12 部。難溶性アルコール [MER06]
- EPAの化学物質情報
- Ethanedioic acid, potassium salt (2:1) (127-96-8)
化学的性質
化学的特性colorless or white crystal(s) [MER06]
安全と法規制
安全情報は参考情報です。供給元の安全データシート（SDS）、適用法令、専門家による評価に代わるものではありません。
GHS分類
GHS Classification
Warning
H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
P264, P270, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 14 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Danger
H302: Harmful if swallowed [Warning Acute toxicity, oral]
危険有害性情報
Regulatory Information
Chemical: Ethanedioic acid, potassium salt (2:1)
REACH registered substance: Potassium trihydrogen dioxalate (EC: 204-874-6)
Other Safety InformationIMAP assessments - Oxalic acid soluble salts: Human health tier II assessment
Hazards SummaryThe dihydrate is CAS# 6100-20-5; May cause irritation; [Mallinckrodt Baker MSDS] May cause irritation; Inhalation or ingestion may cause cardiac disturbances and CNS depression; [Acros Organics MSDS] See Oxalic acid.
Hazard Classes and Categories
Acute Tox. 4 (100%)
Acute toxicity - category 4
安全データ
- tsca
- TSCA listed
化学と産業
用途と製造
UsesUsed as a chemical reagent and in spot removers and metal polishes; [Merck Index]
General Manufacturing InformationEthanedioic acid, potassium salt (2:1): ACTIVE
応用分野
天然物の起源Potassium oxalate, along with calcium oxalate, is found in leaves and roots of certain plants. It is used for cleaning and bleaching straw and for removing stains. It also is used in photography, in clinical tests, as a secondary pH standard, and in wet chemical analysis. The analytical application involves standardization of many oxidizing agents in titrimetric analysis.
調製方法
製造方法Potassium oxalate can be preparaed by heating potassium formate at 360°C:2HCOOK →K2C2O4+ H2The salt is obtained as its monohydrate by neutralization of oxalic acid with a dilute aqueous solution of potassium hydroxide followed by crystallization:H2C2O4+ 2KOH →K2C2O4+ 2H2O.
純化方法Crystallise it from water below 50o. Dry it below 60o at 760mm. [See potassium oxalate above, Beilstein 2 IV 1823.]
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