The CAS number of triethylenetetramine is 112-24-3, the molecular formula is C6H18N4, and it is a light yellow liquid with strong basicity and medium viscosity. In addition to being used as a solvent, triethylenetetramine is also used in the manufacture of epoxy resin curing agents, metal chelating agents, and synthetic polyamide resins and ion exchange resins.

physical properties
Strong alkaline and moderately viscous yellow liquid, its volatility is lower than that of diethylenetriamine, but its properties are similar. Boiling point 266-267°C (272°C), 157°C (2.67kPa), freezing point 12°C, relative density (20, 20°C) 0.9818, refractive index (nD20) 1.4971, flash point 143°C, auto-ignition point 338°C. Soluble in water and ethanol, slightly soluble in ether. Flammable. Low volatility, strong hygroscopicity and strong alkaline. Can absorb carbon dioxide in the air. Combustible, there is a risk of burning when exposed to open flames and heat. It is highly corrosive and can stimulate the skin and mucous membranes, eyes and respiratory tract, and cause skin allergies, bronchial asthma and other symptoms.

chemical properties
Combustion (decomposition) products: including toxic nitrogen oxides.

Contraindications: acrolein, acrylonitrile, tert-butyl nitroacetylene, ethylene oxide, isopropyl chloroformate, maleic anhydride, triisobutyl aluminum.

Strong Alkali: Reacts in contact with strong oxidants, causing fire and explosion hazard. Reacts in contact with nitrogen compounds and chlorinated hydrocarbons. Reacts with acid. Incompatible with amino compounds, isocyanates, alkenyl oxides, epichlorohydrin, aldehydes, alcohols, ethylene glycol, phenols, cresols, and caprolactam solutions. Reacts with nitrocellulose. It is also incompatible with acrolein, acrylonitrile, tert-butyl nitroacetylene, ethylene oxide, isopropyl chloroformate, maleic anhydride, and triisobutyl aluminum. Corrodes copper, copper alloys, cobalt and nickel.

Use
1. Used as room temperature curing agent for epoxy resin;

2. Used as organic synthesis, dye intermediates and solvents;

3. Used in the manufacture of polyamide resins, ion exchange resins, surfactants, lubricant additives, gas purifiers, etc.;

4. Used as metal chelating agent, cyanide-free electroplating diffusing agent, rubber auxiliary, brightening agent, detergent, dispersing agent, etc.;

5. Used as complexing agent, dehydrating agent for alkaline gas, fabric finishing agent and synthetic raw material for ion exchanger resin and polyamide resin;

6. Used as a vulcanizing agent for fluororubber.

Production method
Its production method is dichloroethane amination method. The 1,2-dichloroethane and ammonia water were sent into a tubular reactor for hot-pressing ammoniation at a temperature of 150-250 °C and a pressure of 392.3 kPa. The reaction solution is neutralized with alkali to obtain mixed free amine, which is concentrated to remove sodium chloride, then the crude product is distilled under reduced pressure, and the fraction between 195-215° C. is intercepted to obtain the finished product. This method simultaneously co-produces ethylenediamine; diethylenetriamine; tetraethylenepentamine and polyethylenepolyamine, which can be obtained by controlling the temperature of the rectifying tower to distill the amine mixture, and intercepting different fractions for separation.