DI METHYL ETHANOLAMINE,is an organic compound, chemical formula C5H13NO2, for colorless or dark yellow oily liquid, can be miscible with water, alcohol, slightly soluble in ether. Mainly used as emulsifier and acid gas absorbent, acid base control agent, polyurethane foam catalyst, also used as antitumor drugs such as nitrogen mustard hydrochloride intermediate.
Properties: This product has ammonia odor colorless or yellowish liquid, flammable. It can be miscible with water, ethanol, benzene, ether and acetone. Relative density 0.8879, boiling point 134,6℃. Freezing point – 59. O℃. Ignition point 41℃. Flash point (open cup) 40℃. Viscosity (20℃) 3.8mPa. s. Refractive index 1.4296.
Preparation method:
1.Ethylene oxide process by dimethylamine and ethylene oxide ammonia, through distillation, distillation, dehydration.
2.Chloroethanol process is obtained by the saponification of chloroethanol and alkali to produce ethylene oxide, and then synthesized with dimethylamine.
Applications Of DMEA：
The catalytic activity of N,N-dimethylethanolamine DMEA is very low, and it has little effect on foam rise and gel reaction, but dimethylethanolamine DMEA has strong alkalinity, which can effectively neutralize the trace amount in the foaming components Acids, especially those in isocyanates, thus retain other amines in the system. The low activity and high neutralizing ability of dimethylethanolamine DMEA acts as a buffer and is particularly advantageous when used in combination with triethylenediamine, so that the desired reaction rate can be achieved with low concentrations of triethylenediamine.
Dimethylethanolamine (DMEA) has a wide range of uses, such as: dimethylethanolamine DMEA can be used to prepare water-dilutable coatings; dimethylethanolamine DMEA is also a raw material for dimethylaminoethyl methacrylate, which is used to prepare anti- Static agents, soil conditioners, conductive materials, paper additives and flocculants; dimethylethanolamine DMEA is also used in water treatment agents to prevent boiler corrosion.
In polyurethane foam, dimethylethanolamine DMEA is a co-catalyst and a reactive catalyst, and dimethylethanolamine DMEA can be used in the formulation of flexible polyurethane foam and rigid polyurethane foam. There is a hydroxyl group in the molecule of dimethylethanolamine DMEA, which can react with isocyanate group, so dimethylethanolamine DMEA can be combined with the polymer molecule, and it will not be as volatile as triethylamine.
Product packaging: Using iron drum packaging, net weight 180kg per drum. Store in a cool and ventilated place. Store and transport according to flammable and toxic chemicals.
Post time: Apr-19-2023