基本情報
- CAS
21041-93-0- 標準SMILES
O.O.[Co]- InChIKey
PKSIZOUDEUREFF-UHFFFAOYSA-N- 分子式
- CoH4O2
- 平均分子量
- 94.964 g/mol
- 単同位体質量
- 94.954323
概要
Cobalt(II) hydroxide Co(OH)2 is a hydroxide of cobalt. It occurs in two forms, either as a rose-red powder, which is the more stable of the two forms, or as bluish-green powder. It is used as a drying agent for paints, varnishes, and inks, in the preparation of other cobalt compounds, as a catalyst, or in the manufacture of battery electrodes. Cobalt is a metallic element with the atomic number 27. It is found naturally in rocks, soil, water, plants, and animals. In small amounts cobalt is an essential element for life, as it is part of vitamin B12. However, excess exposure is known to exhibit toxic effects. (L29, L30, L490)
名称と識別子
- 優先名称
- Cobalt dihydroxide
- IUPAC
- cobalt;dihydrate
- 現地名
- 水酸化コバルト(Ⅱ)
- 英語名
- Cobalt(II) hydroxide
- 分子式
- CoH2O2
- 分子量
- 92.95
名称と別名
cobalt(ii)hydroxideCobalt dihydroxidecobalt(2+) dihydroxideCobalt hydroxide (Co(OH)a2)SCHEMBL7108547DTXSID70894155Cobalt(II) hydroxide, technical grade, 95%NS00084436コバルト(II)ジヒドロキシド二水酸化コバルト水酸化コバルト(II)ジヒドロキシコバルト(II)
名称をさらに表示
コバルト 水酸化水酸化コバルト(II) (97%-Co)水酸化コバルト(II), 97%水酸化コバルト(II), 99.9% (metals basis)水酸化コバルト水酸化コバルト(Ⅱ)t(II) hydroxideCOBALT HYDROXIDCobalt hydroxidecobaltdihydroxideCobalt(II)hydroxicobaltoushydroxidecobalt(2+)hydroxidecobalt (Ⅱ) hydroxideCOBALT(II) HYDROXIDECobalt(II)dihydoxide
データベース識別子
- CAS
21041-93-0- PubChem CID
物性
構造計算による物性
- 極性表面積
- 2 Ų
- 水素結合供与体数
- 2
- 水素結合受容体数
- 2
- 回転可能結合数
- 0
- 重原子数
- 3
- 形式電荷
- 0
- 複雑度
- 2.8
実験および物理化学的性質
SpringerMaterials Propertiescrystal structure
物理化学的性質
- 融点
- °Cd ec.)
- 比重(密度)
- 3.597 g/mL · 3.597 g/mL at 25 °C(lit.)
- 蒸気圧
- 0 Pa · 0Pa at 20℃
- 貯蔵温度
- Inert atmosphere,Room Temperature
- 溶解性
- 2 O; · slightly soluble in H2O; soluble in acid solutions
- 外見
- 粉
- 比重
- 3.597 · 3.597
- 色
- ピンクから紫
- PH
- 9.15 · 9.15(1 mM solution);9.15(10 mM solution);9.15(100 mM solution)
- 水溶解度
- 酸およびアンモニアに可溶。水に非常に溶けにくい。希アルカリに不溶。
- Merck
- 14 · 14,2442
- 安定性
- 安定
- InChI
- 1S/Co.2H2O/h;2*1H2/q+2;;/p-2
- InChIKey
- ASKVAEGIVYSGNY-UHFFFAOYSA-L
- SMILES
- O[Co]O
- CAS データベース
- 21041 · 21041-93-0(CAS DataBase Reference)
- EPAの化学物質情報
- 2 · Cobalt hydroxide (Co(OH)2) (21041-93-0)
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。
安全と保護具
Minimum Risk LevelChronic Inhalation: 0.0001 mg/m3 (L134)
Intermediate Oral: 0.01 mg/kg/day (L134)
毒性情報
TreatmentTreatment of cobalt poisoning is symptomatic. (L29)
Health EffectsExposure to high amount of cobalt can cause heart, lung, kidney, and liver damage. Skin contact is known to result in contact dermatitis. Cobalt may also have mutagenic and carcinogenic effects. (L29, L30)
Exposure RoutesInhalation (L29) ; oral (L29) ; dermal (L29)
Toxicity Summary
Cobalt is believed to exhibit its toxicity through a oxidant-based and free radical-based processes. It produces oxygen radicals and may be oxidized to ionic cobalt, causing increased lipid peroxidation, DNA damage, and inducing certain enzymes that lead to cell apoptosis. Cobalt has also been shown to block inorganic calcium channels, possibly impairing neurotransmission. Cobalt can also chelate lipoic acids, impairing oxidation of pyruvate or fatty acids. In addition, cobalt may inhibit DNA repair by interacting with zinc finger DNA repair proteins, and has also been shown to inhibit heme synthesis and glucose metabolism. Cobalt may activate specific helper T-lymphocyte cells and interact directly with immunologic proteins, such as antibodies (IgA and IgE) or Fc receptors, resulting in immunosensitization. (L29)
Signs and SymptomsCobalt inhalation can cause asthma-like breathing problems. Skin contact is known to result in contact dermatitis, which is characterized by irritation and rashes. Ingesting large amounts of cobalt may cause nausea and vomiting. (L2090)
Carcinogen Classification2B, possibly carcinogenic to humans. (L135)
安全データ
化学と産業
薬理情報
Metabolism/Metabolites
Cobalt is absorbed though the lungs, gastrointestinal tract, and skin. Since it is a component of the vitamin B12 (cyanocobalamin), it is distributed to most tissues of the body. It is transported in the blood, often bound to albumin, with the highest levels being found in the liver and kidney. Cobalt is excreted mainly in the urine and faeces. (L29)
用途と製造
UsesCobalt(II) hydroxide is used as a drying agent for paints, varnishes, and inks, in the preparation of other cobalt compounds, as a catalyst, or in the manufacture of battery electrodes. (L490)
応用分野
解説水酸化コバルト(Ⅱ)ばら色の粉末．密度3.60 g cm－3．両性化合物で，酸に溶けてコバルト(Ⅱ)塩になり，アルカリには加熱するとテトラヒドロキソコバルト(Ⅱ)酸塩MⅠ2[Co(OH)4]を生じ，青色溶液になる．酸化されやすい．空気中では徐々に酸素を吸収して褐色の水酸化コバルト(Ⅲ)になる．水に難溶，アンモニア水，アンモニウム塩水溶液に可溶．金属コバルトの製造，ニッケル水素電池の正極材料，金属せっけん，触媒などに用いられる．
用途コバルト化合物合成原料、ペイント等の乾燥剤、蓄電池電極。
説明The addition of alkali metal hydroxides to solutions of cobalt(II) salts results in the precipitation of cobalt(II) hydroxide in either a blue or pink form depending upon the conditions. The pink form is the more stable of the two and is obtained when a suspension of the blue form is allowed to stand or is warmed. Cobalt(II) hydroxide is amphoteric, dissolving in alkalis to form blue solutions of the [Co(OH)4]2- ions. In the presence of alkali, suspensions of Co(OH) are oxidized by air to the brown CoO(OH), this oxidation being brought about rapidly by oxidants such as hypochlorite, bromine water or hydrogen peroxide. The pink Co(OH)2 (density 3.597) has the brucite (Mg(OH)2) structure in which the cobalt atoms are surrounded by six hydroxides. The blue form is more disordered, but its structure is not known for certain.
使用Cobalt(II) hydroxide is used as a drying agent for paints and varnishes. It acts as an aid to dry the lithographic inks and catalyst in the preparation of battery electrode impregnating solutions. It is also involved in the synthesis of other cobalt compounds.
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