トリレン-2,6-ジイソシアナート 化學(xué)特性,用途語,生産方法
外観
無色～ほとんど無色透明液體
化學(xué)的特性
colourless liquid
使用
2-Methyl-m-phenylene Diisocyanate is used in method for preparing breathable sweat-absorbing EVA foam shoe material.
定義
ChEBI: A toluene meta-diisocyanate in which the isocyanato groups are at positions 2 and 6 relative to the methyl group on the benzene ring.
一般的な説明
Liquid. Used in the manufacture of polyurethane foams, elastomers, and coatings; crosslinking agent for nylon 6.
反応プロフィール
2-METHYL-M-PHENYLENE DIISOCYANATE reacts violently with amines, alcohols, bases and warm water, causing fire and explosion hazards. [Handling Chemcials Safely 1980. p. 907]. Reaction with water to form Carbon Dioxide [Merck 11th ed. 1989].
健康ハザード
Classified as slightly toxic orally. Probable oral lethal dose in humans is 5 to 15 g/kg or between 1 pint and 1 quart for a 70 (l50 lb.) person. Particularly poisonous when breathed. This is among the most poisonous of isocyanates. Acute and chronic exposures to low concentrations may produce asthmatic attacks.
火災(zāi)危険
When heated to decomposition, 2-METHYL-M-PHENYLENE DIISOCYANATE emits toxic fumes of nitrogen oxides. Ventilation should be adequate. If polyurethane products are heated, protection against isocyanate release is necessary. Avoid decomposing heat.
安全性プロファイル
Confirmed carcinogen.
Poison by ingestion and inhalation. Human
systemic effects by inhalation: olfactory, eye,
and pulmonary changes. Flammable liquid.
When heated to decomposition it emits
toxic fumes of NOx. See also CYANATES.
純化方法
It is purified by fractional distillation in a vacuum. Store it under N2 in sealed dark ampoules as it is water and light sensitive. Like the preceding 2,4-isomer, it has a sharp pungent odour, is TOXIC and is IRRITATING TO THE EYES. [Beilstein 13 IV 259.]
トリレン-2,6-ジイソシアナート 上流と下流の製品情報
原材料
準(zhǔn)備製品