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外観
白色～わずかにうすい褐色, 粉末
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溶解性
水 ＜0.1 g/100 mL at 23.5℃。エタノール及びアセトンに溶け、水にほとんど溶けない。
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用途
有機ゴム老化防止剤。
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化学的特性
yellow or white crystals
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使用
2-Mercaptobenzimidazole is used as an antidegradant. It is utilized for protecting rubber from oxidation. It is also employed as an intermediate in the preparation of rabeprazole. Further, it finds application in anti-leprosy drugs in medicine. In addition to this, it is used as a copper plating brightener.
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一般的な説明
White to yellow crystals or cream colored powder. Slight odor.
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空気と水の反応
Dust explosion: 0.140 oz/ft3. Insoluble in water. 2-Mercaptobenzimidazole is moisture sensitive. .
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反応プロフィール
An organosulfide and an amine. Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.
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火災危険
Flash point data for 2-Mercaptobenzimidazole are not available; however, 2-Mercaptobenzimidazole is probably combustible.
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安全性プロファイル
Poison by
intraperitoneal and intravenous routes.
Moderately toxic by ingestion. Skin and eye
irritant. When heated to decomposition it
emits toxic fumes of SO, and NO,. See also
MERCAPTANS.
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純化方法
Crystallise it from aqueous EtOH, AcOH or aqueous ammonia. It complexes with many metals. [Brown J Chem Soc 1976 1958, Beilstein 24 II 65, 24 III/IV 287.]
