Tuesday, May 8, 2012

the usage of Triethanolamine


Triethanolamine chemical properties:
The triethanolamine alkaline weaker than ammonia (pKa7.82), the nature of the tertiary amine and alcohol. And low temperature organic acid salt, ester produced at high temperatures. Generate two to four ligands with a variety of metal chelates. Hypochlorous acid oxidation to generate the amine oxide. Periodate oxidation decomposition into ammonia and formaldehyde. Sulfuric acid generated morpholino ethanol. Triethanolamine at low temperature can absorb acidic gases, high temperature release.
Triethanolamine  is used as plasticizers, neutralizers, lubricants, additives or corrosion inhibitors, as well as textiles, cosmetics, humidifying agents and dyes, resins such as dispersing agent. Curing agent for epoxy resin, with a reference to the amount of 12-15 parts (by mass), the curing conditions of 80 / 4h or 120 ° C / 2h. Can also use synthetic surfactants, detergents, stabilizers and fabric softener raw materials. Used in cosmetic formulations and fatty acids into soap and sulfated fatty acid into the amine salt. The wash liquid used for the removal of acid gases such as hydrogen sulfide and carbon dioxide in the exhaust gas treatment. Also be used for the vulcanization activator of natural rubber, synthetic rubber, nitrile rubber polymerization activators, can also be used as a lubricant and anti-corrosion additives.
2 triethanolamine salt of long chain fatty acids is almost neutral and can be used as the emulsifier of oils and waxes. The oleic acid soap can increase gasoline washing capacity; stearic acid soap for fragrance cosmetics. Triethanolamine can be used as casein, shellac, dyes, solvents. Can also be used in industrial gas purification agents, fiber treatment agents, anti-corrosion additives, plasticizers, moisturizers, chelating agents, rubber vulcanization accelerator agents, photographic developer additives, detergents, cement enhancers, anti-coke additive.
Used as corrosion inhibitors, triethanolamine is an important inhibitor component of the boiler water treatment, automotive engine coolant, drilling and cutting oil. Can also be used for surface active agents, textile specialties, waxes, polishes, herbicides, petroleum demulsifiers, cosmetics, cement additives, cutting oils.
Used as GC stationary liquid metal masking agent, with agents, emulsifiers, dry cleaners, solvents, softeners, and for resin synthesis.Triethanolamine is mainly used for the preparation of surfactants, detergents, stabilizers, emulsifiers, fabric softeners. Triethanolamine in the liquid detergent can be improved removal of oily dirt, especially non-polar sebum, and the same time, by increasing the alkaline can improve the performance of decontamination. In addition, liquid detergent, its compatibility is excellent.
Solution of triethanolamine and its salts as additives of cement grinding process can not only prevent aggregation and cushion the role of the process of pulverizing powder to improve the mobility and the packing density of the cement, but also can reduce the power consumption of the shredder.
In alkaline zincate galvanized and zinc complex, increase the cathodic polarization of the bath, the coating crystalline detailed, high levels of lower deposition rate, the low will cause the coating gray rough, dispersing power poor, the general content of 20 ~ 30mL / L. However, the viscosity of triethanolamine, the maximum current density of the bath decreases.

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