| 中文名称 | 甲苯二异氰酸酯 |
| 英文名称 | Toluene diisocyanate |
| CAS号 | 26471-62-5 |
| 分子式 | C9H6N2O2 |
| 分子量 | 174.15614 |
| EINECS号 | 247-722-4 |
| 熔点 | 19.5~21.5℃ |
| 沸点 | 247℃ |
| 密度 | 1.22 |
| 折射率 | 1.5660 to 1.5700 |
| 闪点 | 137 °C |
| LogP | 3.43 at 22℃ |
| 溶解度 | 与乙醚、丙酮、苯混溶 |
| 形态 | 透明液体 |
| 颜色 | 无色至淡黄色 |
| 气味 (Odor) | 尖锐、刺鼻的气味 |
| 水溶解性 | 124mg/L at 25℃ |
| (IARC)致癌物分类 | 2B (Vol. 39, Sup 7, 71) 1999 |
| 危险类别码 | 26-36/37/38-40-42/43-52/53 |
| 安全说明 | 23-36/37/39-45-24/25 |
| 危险品运输编号 | 2078 |
| RTECS号 | NQ9490000 |
| 海关编码 | 29291090 |
| 危险等级 | 6.1(a) |
| 包装类别 | II |
| 毒害物质数据 | 26471-62-5(Hazardous Substances Data) |
| 毒性 | A designated hazardous waste (EPA). It is a colorless toyellow solid, melting at about 20°C. TDI and MDI (diphenylmethane diisocyanate) are used in the manufacture of polyurethane foams by reaction with polyhydroxy compounds. Thesefoams are used for insulation, upholstering, etc. Exposure iscommonly by inhalation of the vapor. Both TDI and MDI cancause irritation of eyes and mucous membranes, in severecases leading to pulmonary edema. Sensitization to TDI iscommon and frequently rapid, leading to an allergic reactionand some loss of lung function. In the United Kingdom, thethreshold limit value is 0.02 ppm for not more than 20 min, or0.005 ppm for 8 h. |
1.由2,4-二氨基甲苯与光气作用制得。先将固体二氨基甲苯溶于氯化苯中,在搅拌下升温至70℃得二氨基甲苯氯苯溶液,将回收光气化的氧化苯,放入低温光气锅中,补加一定液体光气后,在搅拌下滴加配好的二氨基甲苯溶液,在40℃进行光气化,再将低温光气化的物料放入高温锅中进行高温光气化,边升温边通气,约4h,反应一般在120~125℃进行;反应完毕,经用氮气赶气、蒸馏、精馏而得。