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N-Метилдиэтаноламин
N-множественные имена
Methyldiethanolamine;
2.2-(Methylimino)Diethanol;
2.2-Methyliminodiethanol;
N-Methylediethanolamine;
N-Methyl Diethanolamine;
Methyl Diethanlamine;
2-Hydroxy-N-(2-Hydroxyethyl)-N-Methylethanaminium; MDEA; N,N-Bis(2-Hydroxyethyl)Methylamine
Номер CAS 105-59-9
ЕС № 203-312-7
МФ № C5H13NO2
МВ № 119.16372
Mainly used as emulsifier and acid gas absorbent, acid base control agent, polyurethane foam catalyst.
It is also used as an intermediate in antitumor drugs such as nitrogen mustard hydrochloride.
Advantage of N-Methyldiethanolamine CAS No. 105-59-9 Basic
Хороший промежуточный
Дико используемое приложение
Good catalyst
Имена и идентификаторы
| Имя | N-Метилдиэтаноламин |
| Синонимы | МДЭА Methyl Diethanlamine METHYL DIETHANOLAMINE N-METHYLDIETHANOLAMINE N-Метилдиэтаноламин N-Methyl Diethanolamine N-Methylediethanolamine 2,2-Methyliminodiethanol 2,2-(Methylimino)Diethanol N-METHYL-2,2′-IMINODIETHANOL BIS(2-HYDROXYETHYL)METHYLAMINE N-METHYL-2,2-IMINOBIS(ETHANOL) N,N-BIS(2-HYDROXYETHYL)METHYLAMINE N-METHYL-N-(2-HYDROXYETHYL)-2-AMINOETHANOL 2-hydroxy-N-(2-hydroxyethyl)-N-methylethanaminium |
| CAS | 105-59-9 |
| EINECS | 203-312-7 |
| InChI | InChI=1/C5H13NO2/c1-6(2-4-7)3-5-8/h7-8H,2-5H2,1H3/p+1 |
| InChIKey | CRVGTESFCCXCTH-UHFFFAOYSA-N |
105-59-9 – Физико-химические свойства
| Молекулярная формула | C5H13NO2 |
| Молярная масса | 119.16 |
| Плотность | 1.038 г/м при 25°C (лит.) |
| Температура плавления | -21 ° C |
| Болинг Точка | 246-248 ° С (горит.) |
| Точка возгорания | 260 ° F |
| Растворимость воды | смешивающийся |
| Давление пара | 0.01 мм рт.ст. (20 ° C) |
| Плотность пара | 4 (против воздуха) |
| Внешний вид | жидкость |
| Цвет | Прозрачный от бесцветного до светло-желтого |
| запах | аммонийный |
| BRN | 1734441 |
| рКа | 14.41 ± 0.10 (прогнозируемый) |
| PH | 11.5 (100g / l, H2O, 20 ℃) |
| Условия хранения | Хранить ниже + 30 ° C. |
| Стабильность | Стабильная. Горюче. Несовместим с сильными окислителями. |
| Предел взрываемости | 0.9-8.4% (V), |
| Показатель преломления | n20 / D 1.469 (освещен). |
| Физические и химические свойства | colorless or yellowish viscous liquid температура кипения 246~248 ℃ температура вспышки 260 ℃ точка замерзания -21 ℃ latent heat of vaporization 519.16KJ/Kg температура кипения 247 ℃ water-soluble, soluble in water and alcohol, slightly soluble in ether |
| Используйте | It is a new solvent with excellent performance for selective desulfurization and decarburization. It has the advantages of high selectivity, less solvent consumption, remarkable energy saving effect, and not easy to degrade. Widely used in oil gas and gas desulfurization purification emulsifier and acid gas absorbent, acid-base control agent, polyurethane foam catalyst. The carbon dioxide in synthetic ammonia can be removed with the participation of an activator, so that it has been gradually promoted in the absorption of carbon dioxide in flue gas in recent years. In addition, MDEA can also be used as pesticides, emulsifiers, semi-finished products of fabric additives, intermediates of antineoplastic drug hydrochloric acid nitrogen mustard, catalyst of carbamate coatings, it is also a drying accelerator for paint. |
105-59-9 – Риск и безопасность
| Символы опасности | Xi – Раздражающее вещество |
| Коды рисков | 36 – Раздражает глаза |
| Описание безопасности | 24 – Избегайте контакта с кожей. |
| Идентификаторы ООН | 2735 |
| WGK Германия | 1 |
| RTECS | KL7525000 |
| ЗКТВ | Да |
| Код ТН ВЭД | 2922 17 00 |
| Класс опасности | 8 |
| Группа упаковки | II |
| Токсичность | LD50 перорально у кроликов: 4680 мг/кг |
Справочная информация
| Диапазон pH кислотно-щелочного индикатора изменения цвета | 11.5 at 100g/l at 20°C |
| LogP | -1.16 при 23℃ |
| цель | mainly used as emulsifier and acid gas absorbent, acid-base control agent, polyurethane foam catalyst. It is also used as an intermediate of the antitumor drug nitrogen hydrochloride and the like. |
| способ производства | 1. From the reaction of formaldehyde and diethanolamine. Formic acid was added to the reaction pot and heated to boiling, and a mixed solution of formaldehyde and diethanolamine was added dropwise under stirring for about 1H. The temperature was maintained at 90-98 ° C., and reflux was continued for 4 hours. Then, distillation under reduced pressure was carried out to collect a fraction at 120-130 ° C. (0.53kPa) to obtain N-methyldiethanolamine in a yield of 85%. Derived from the reaction of methylamine with ethylene oxide. The temperature was kept below 30 ° C., and the addition reaction was carried out by introducing ethylene oxide gas into 20% methylamine solution until the relative density of the reaction solution reached 1.025. Stirring for 15min, the relative density is unchanged for the end point. Methylamine was recovered to 103 ° C. Under normal pressure, and after water was evaporated under reduced pressure, a 119-170 ° C. (4.67kPa) fraction was collected. It is the finished product. The yield was 72%. Raw material consumption quota: Ethylene oxide 950kg/t, methylamine (40%)870kg/t. In addition, N-methyl diethanolamine can be obtained by catalytic hydrogenation of formaldehyde and cyanoethanol. |
| температура самовозгорания | 770°Ф. |
Фабрика и отгрузка
