α-メチルスチレン 化学特性,用途語,生産方法
外観
無色～わずかにうすい黄色, 澄明の液体
溶解性
水に難溶 (＜0.1g/100ml)。エタノール及びアセトンに極めて溶けやすく、水にほとんど溶けない。
用途
ABS(アクリロニトリルブタジエンスチレン)樹脂の耐熱?耐衝撃性の強化剤重合原料,ポリエステル樹脂?アルキッド樹脂改良剤重合原料、NITE初期リスク評価書;ABS樹脂の耐熱?耐衝撃性強化用改質剤、化学工業日報社
用途
耐熱ABSで、スチレンの代わりに使用される。また、顔料，塗料 接着剤等有機化合物の原料として、また、ゴムやプラスチックの添加剤として使用される。
特徴
α-メチルスチレンは、スチレンに類似した重合性を持ち、付加重合成性を持つ芳香族化合物で
化学的特性
clear colourless liquid
物理的性質
Colorless liquid with a sharp aromatic odor. Odor threshold concentration is 290 ppb (quoted,
Amoore and Hautala, 1983).
使用
Polymerization monomer, especially forpolyesters.
調製方法
α-Methylstyrene (AMS) is produced as a by-product in the production of phenol and acetone from cumene.
一般的な説明
A colorless liquid. Insoluble in water and less dense than water. Flash point 115°F. May be mildly toxic by ingestion, inhalation and skin absorption. Vapors may be narcotic by inhalation. Used as a solvent and to make other chemicals.
空気と水の反応
Flammable. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick, 1979 p.151-154, 164]. Insoluble in water.
反応プロフィール
2-Phenyl-1-propene is easily peroxidizable; the peroxide may initiate exothermic polymerization of the bulk material. Reacts violently with strong oxidizing agents [Handling Chemicals Safely, 1980 p. 866; Bretherick, 1979 p. 160].
危険性
Moderate fire risk. Explosive limits in air1.9–6.1%. Avoid inhalation and skin contact. Upperrespiratory tract irritant, kidney and female repro-ductive damage. Possible carcinogen.
健康ハザード
Inhalation causes irritation of respiratory tract, headache, dizziness, light-headedness, and breathlessness. Ingestion causes irritation of mouth and stomach. Contact with liquid irritates eyes. Prolonged skin contact can cause severe rashes, swelling, and blistering.
安全性プロファイル
Mildly toxic by
inhalation. Human systemic effects by
inhalation: irritant effects. A skin and eye
irritant. Flammable when exposed to heat or
flame; can react vigorously with oxidizing
materials. When heated to decomposition it
emits acrid smoke and irritating fumes.
職業ばく露
Methylstyrene is used as additive,
plasticizer, and copolymer; used in the production of
modified polyester and alkyd resin formulations.
環境運命予測
Chemical/Physical. Polymerizes in the presence of heat or catalysts (Hawley, 1981).
輸送方法
UN2303 Isopropenylbenzene, Hazard Class: 3;
Labels: 3-Flammable liquid
純化方法
Wash the monomer three times with aqueous 10% NaOH (to remove inhibitors such as quinol), then six times with distilled water, dry with CaCl2 and distil it unde
不和合性
Vapors may form explosive mixture
with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away
from alkaline materials, strong bases, strong acids, oxoacids,
epoxides, peroxides, halogens, catalysts for vinyl or ionic
polymers; aluminum, iron chloride; copper. Methylstyrene
may form unstable peroxides; may polymerize. Usually
contains an inhibitor, such as tert-butyl catechol.
廃棄物の処理
ncineration, often by admixture with a more flammable solvent
α-メチルスチレン 上流と下流の製品情報
原材料
準備製品
Antioxidant ZM-405
High temperature levelling agent BOF
りん酸トリフェニル
(1-メチル-2-シクロプロペン-1-イル)ベンゼン
アトロパアルデヒド
2,5-ジフェニル-2,4-ヘキサジエン
1H-Indene, 2,3-dihydro-1,1-dimethyl-3-phenyl-
2,3-ジヒドロ-1,1,2,3,3-ペンタメチル-1H-インデン
3-フェニル-2-ブテナール