しゅう酸ジカリウム
しゅう酸カリウム · しゅう酸ジカリウム · しゅう酸二カリウム · エタン二酸ジカリウム · 蓚酸カリウム · 二カリウム オキサラート · Potassium oxalate · DIPTASSIUMOXALATE
識別子と物理属性
| CAS No. | 583-52-8 |
|---|---|
| 分子式 | C2K2O4 |
| 平均分子量 | 166.22 g/mol |
| 単同位体質量 | 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 |
| 現地名 | しゅう酸ジカリウム |
化学・物理的性質
| 極性表面積 | 80.3 |
|---|---|
| 水素結合供与体数 | 0 |
| 水素結合受容体数 | 4 |
| 回転可能結合数 | 0 |
| 重原子数 | 8 |
| 形式電荷 | 0 |
| 複雑度 | 60 |
| 密度 | 2.08 @25 °C2.13 |
| Physical Description | Colorless odorless solidEfflorescent in warm dry air[Merck Index] White crystals or chunks[Integra MSDS] |
| 溶解度 | slightly soluble in H2O392g/L at 20℃ |
| 色 | white pwd |
| 臭い | 無臭 |
| 化粧品成分の機能 | 防錆剤キレート化 |
| 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 データベース | 583-52-8(CAS DataBase Reference) |
| EPAの化学物質情報 | Ethanedioic acid, potassium salt (1:2) (583-52-8) |
化学的特性
Colorless, transparent crystals; odorless. Soluble in water.
安全性と法規制
| GHS 分類 | 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. |
|---|---|
| 規制情報 | 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 |
| その他の安全情報 | IMAP assessments - Ethanedioic acid, dipotassium salt: Environment tier I assessmentIMAP assessments - Oxalic acid soluble salts: Human health tier II assessment |
| 有害性の概要 | 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] |
| 有害作用 | Dermatotoxin - Skin burns. |
| TSCA 収載状態 | TSCA listed |
| 化審法 | 2-922 |
用途
解説
【Ⅰ】K2C2O4(166.22)．水酸化カリウムまたは炭酸カリウムの水溶液に，計算量のシュウ酸を加え，冷却すると一水和物が析出する．一水和物は，無色の単斜晶系結晶．C-C1.57 Å，C-O 1.25～1.26 Å．一水和物は風解性がある．約160 ℃ で無水物になる．さらに加熱すると約370 ℃ でK2CO3になる．無水物は密度2.13 g cm－3．水に易溶．写真のしみ抜き，血液凝固防止剤，麦ワラの漂白，分析試薬などに用いられる．[CAS 583-52-8]【Ⅱ】シュウ酸水素カリウム：KHC2O4(128.13)．シュウ酸カリウム水溶液に計算量のシュウ酸を加え，冷却すると一水和物が析出する．これを加熱脱水すると無水物が得られる．木材の洗浄，インキ消し，染色の媒染剤，写真のしみ抜きなどに用いられる．森北出版「化学辞典（第2版）
使用
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.
一般的な説明
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.