二硝酸コバルト(II) 化学特性,用途語,生産方法
用途
化学物質製造段階の触媒
用途
触媒,触媒原料 (NITE CHRIP)
化学的特性
Red crystals. Deliquescent in moist air.
Soluble
in most organic solvents.
物理的性質
The hexahydrate is red monoclinic crystal; deliquescent in moist air; density 1.87 g/cm
3; decomposes at 55°C, losing three molecules of water; decomposes to green cobalt(II) oxide on further heating at 74°C; very soluble in water (134 g/100mL at 0°C); also soluble in alcohols and acetone. The anhydrous salt is pale red powder; density 2.49 g/cm
3; decomposes around 100°C; soluble in water.
使用
Sympathetic inks, cobalt pigments, catalysts,
additive to soils and animal feeds, vitamin preparations, hair dyes, porcelain decoration.
定義
ChEBI: A cobalt salt in which the cobalt metal is in the +2 oxidation state and the counter-anion is nitrate.
製造方法
Cobalt(II) nitrate is prepared by treating the metal, or its oxide, hydroxide or carbonate with dilute nitric acid. The solution on evaporation yields red crystals of hexahydrate:
Co + 2HNO
3 → Co(NO
3)
2 + H
2 Co(OH)
2+ 2HNO
3 → Co(NO
3)
2 + 2H
2O
CoCO
3+ 2HNO
3→ Co(NO
3)
2 + CO
2 + H
2O.
一般的な説明
Odorless red solid. Sinks and mixes with water.
空気と水の反応
Water soluble.
反応プロフィール
Mixtures of metal/nonmetal nitrates with alkyl esters may explode, owing to the formation of alkyl nitrates; mixtures a nitrate with phosphorus, tin (II) chloride or other reducing agents may react explosively [Bretherick, 1979 p. 108-109].
危険性
Oxidizing agent, dangerous fire risk in contact with organic materials.
健康ハザード
Inhalation causes shortness of breath and coughing; permanent disability may occur. Ingestion causes pain and vomiting. Contact with eyes or skin causes irritation.
二硝酸コバルト(II) 上流と下流の製品情報
原材料
準備製品