アミノフェノル 化学特性,用途語,生産方法
解説
hydroxyaniline，hydroxybenzeneamine．C6H7NO(109.13)．HOC6H4NH2．塩基性のアミノ基と酸性のヒドロキシ基とを同一ベンゼン核にもつので，無機酸と塩をつくる一方，強いアルカリに溶ける．o-，m-，p-アミノフェノールの3種類の異性体がある．【Ⅰ】o-アミノフェノール：o-ニトロフェノールを還元してつくられる．昇華性の針状晶．融点174 ℃．空気中で徐々に酸化され，褐色にかわる．エーテル，ベンゼン，エタノールに易溶，水に可溶．λmax 233，285 nm(log ε 3.84，3.51)．アゾ染料，硫化染料，酸性染料の中間物となる．[CAS 95-55-6]【Ⅱ】m-アミノフェノール：m-ニトロフェノールの還元，メタニル酸のアルカリ融解またはレソルシノールの部分アンモノリシスによってつくる．結晶．融点123 ℃．エーテル，エタノール，水に可溶．λmax 287 nm(log ε 3.32)．空気中で安定である．アゾ染料，酸化染料の中間物，また抗結核剤p-アミノサリチル酸の原料となる．LD50 1660 mg/kg(ラット，経口)．[CAS 591-27-5]【Ⅲ】p-アミノフェノール：p-ニトロフェノールの還元，またはニトロベンゼンを硫酸およびアルミニウムとともに加熱する方法などでつくられる．結晶．融点186 ℃．水，エタノールに可溶，ベンゼンに不溶．λmax 234，301 nm(log ε 3.89，3.36)．酸化クロム(Ⅳ)で酸化するとp-ベンゾキノンとなり，亜硫酸ナトリウムを加えたものはロジナールとよばれ，写真現像薬として用いられる．そのほか，金属の検出用試薬，硫化染料，酸化染料の中間物となる．[CAS 123-30-8]
森北出版「化学辞典（第2版）
化学的特性
o-Aminophenol appears as colorless needles or as white crystalline substance turning tan to brown on exposure to air.
一般的な説明
AMINOPHENOL is either a white or reddish colored crystals, or a solution of the crystals and a solvent. The solvent is usually either alcohol or water. They are soluble in water. They may be poisonous by ingestion. They are used to make dyes and pharmaceuticals.
空気と水の反応
They are soluble in water.
反応プロフィール
An amine and phenol, and therefore may exhibit properties of an acid or base. THF forms explosive products with 2-aminophenol [Lewis 3227].
健康ハザード
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
火災危険
Combustible material: may burn but does not ignite readily. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
職業ばく露
Workers may be exposed to oAminophenol during its use as a chemical intermediate; in the manufacture of azo and sulfur dyes; and in the photographic industry. There is potential for consumer exposure to o-Aminophenol because of its use in dyeing hair, fur, and leather. The compound is a constituent of 75 registered cosmetic products suggesting the potential for widespread consumer exposure. p-Aminophenol is used mainly as a dye, dye intermediate and as a photographic developer; and in small quantities in analgesic drug preparation. Consumer exposure to p-aminophenol may occur from use as a hairdye or as a component in cosmetic preparations. mAminophenol is used mainly as a dye intermediate
輸送方法
UN2512 Aminophenols (o-; m-; p-), Hazard Class: 6.1; Labels: 6.1-Poisonous materials
不和合性
These phenol/cresol materials can react with oxidizers; reaction may be violent. Incompatible with strong reducing substances such as alkali metals, hydrides, nitrides, and sulfides. Flammable gas (H2) may be generated, and the heat of the reaction may cause the gas to ignite and explode. Heat may be generated by the acidbase reaction with bases; such heating may initiate polymerization of the organic compound. Reacts with boranes, alkalies, aliphatic amines, amides, nitric acid, sulfuric acid. Phenols are sulfonated very readily (e.g., by concentrated sulfuric acid at room temperature). These reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid and can explode when heated. Many phenols form metal salts that may be detonated by mild shock.
廃棄物の処理
Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.
アミノフェノル 上流と下流の製品情報
原材料
準備製品