TWA 5 mg/m3; STEL 10 mg/m3
Oral-Rat LD50: 8000 mg/kg; Oral-mouse LD50: 5846 mg/kg
(1) GB 2760-96 provides it as allowable food processing aids with GMP as limit.
(2) It can be used as the cleaning liquid for the removal of carbon dioxide and hydrogen sulfide in the gas. Esters generated from the reaction between triethanolamine and higher fatty acids are widely used as detergents, emulsifiers, wetting agents and lubricants as well as for the preparation of cosmetic balsam. Triethanolamine can also be used as preservatives and waterproofing agents, analysis reagents and solvents. In the nitrile rubber polymerization, it is used as an activator. It can also be used as the emulsifier, stabilizer, textile softer of oil and wax. It is one of the components of oiling agent of synthetic fiber.
(3) It can be used as the additives in the nitrile rubber polymerization, concrete accelerator, oil emulsifier as well as used for non-cyanide plating
(4) It can be used as the stationary phase of gas chromatography (the maximum applied temperature is 75 ℃; the solvent is methanol and ethanol); It can be used for separation and analysis of oxygen, nitrogen compounds and water-containing samples. It can be used as complexing agent; as metal masking agent; for titration of platinum and palladium; for colorimetric determination of manganese; for determination of tin, antimony and manganese; used for absorption of carbon dioxide and carbon disulfide and other alkaline gases; used as emulsifier, solvent and corrosion inhibitors.
Triethanolamine is used primarily as a surfactant, reducing the surface tension between two media. It is also used as a general emulsifier for preparations, such as ones involving drug penetration ass
Feed the ethylene oxide and ammonia water are into the reactor; conduct the condensation reaction under a reaction temperature of 30-40 °C and a reaction pressure of 70.9-304 kPa to generate a mixture solution of mono-, di-and triethanolamine; after undergoing dehydration and concentration at 90-120 °Cand then send to three vacuum distillation tower for vacuum distillation; capture different fractions according to different boiling points, you can get over 99% purity of the finished product of ethanolamine, diethanolamine and triethanolamine. During the course of the reaction, if increase the proportion of ethylene oxide, the generation ratio of di-and tri-ethanolamine will increase so we can get higher di-and tri-ethanolamine yield.
It is manufactured through the condensation reaction between ethylene oxide and ammonia under 30~40 °C and the pressure 71~304 kPa, in which the molar concentration of ethylene oxide and ammonia ratio is about 2.0. After the reaction, perform vacuum distillation through the distillation column, cut off the fractions of about 360 °C.
Liquid may irritate eyes and skin.
This emulsifying agent can be contained in many products
such as cosmetics, topical medicines, metalworking cut-
ting fluids, and color film developers. Traces may exist in
other ethanolamines such as mono- and diethanolamine.
Contact allergy seems to be rarer than previously thought.
Storage and transport characteristics
ensure intact packaging; carry out light loading and unloading; warehouse: being ventilated and keep away from open flame and high temperature. Store it separately from acid, copper and aluminum.
Triethanolamine is a viscous, colourless/pale yellow liquid with a weak ammoniacal
odour. Triethanolamine is incompatible with copper, copper alloys, galvanised iron, acids,
and oxidisers. Reports indicate that in India itself, as many as six companies manufacture
triethanolamine and it is manufactured by many different countries around the
world. Global production and industrial application of triethanolamine is very extensive.
In industries, triethanolamine is used as a corrosion inhibitor in metal-cutting fluids; a
curing agent for epoxy and rubber polymers; a copper–triethanolamine; in emulsifiers,
thickeners, and wetting agents in the formulation of consumer products such as cosmetics,
detergents, shampoos, and other personal products; and a neutraliser-dispersing agent in
agricultural herbicide formulations. In brief, triethanolamine has wide applications as a
corrosion inhibitor, a surface-active agent, and an intermediate in various products including
metalworking fluids, oils, fuels, paints, inks, cement, cosmetic, and personal products
and formulations of algicides and herbicides.
Clear, amber viscous liquid
Fire extinguishing agent
foam, dry powder, carbon dioxide, sand
Special Hazards of Combustion Products: Poisonous gases, such as NOx, may be produced
Mobisyl [as salicylate] (Ascher).
ChEBI: A tertiary amino compound that is ammonia in which each of the hydrogens is substituted by a 2-hydroxyethyl group.
Flammability and Hazardous characteristics
it is flammable in case of fire, high temperature and strong oxidant with combustion releasing toxic smoke of nitrogen oxides.
Skin-Rabbit 560 mg/24 Hours Mild; Eye-Rabbit 20 mg Severe
Air & Water Reactions
Triethanolamine is an aminoalcohol. Neutralize acids to form salts plus water in exothermic reactions. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides. Reacts violently with strong oxidants. [Handling Chemicals Safely 1980. p. 928].
At room temperature, it appears as colorless transparent viscous liquid with hygroscopicity and ammonia smell. It is alkaline, being irritating. It has a melting point of 21.2 °C, the boiling point of 360 °C, a flash point of 193 ° C, the relative density (d420) 1.1242 and refractive index (nD20) of 1.4852. It is miscible with water, ethanol and acetone, slightly soluble in ether, benzene and carbon tetrachloride.
Oily liquid with a mild ammonia odor. Denser than water. Freezing point is 71°F.
Dermatology drug for external use
At present, the dermatology of many hospitals commonly used the topical drug, Biafine for the treatment of burns and skin trauma with the main ingredient being triethanolamine. Triethanolamine can play a dual effect of cleaning and drainage through the principle of penetration and capillary action, being able to further increase the skin blood flow velocity and helping the discharge of exudate. It can also change the ratio between interleukin 1 and interleukin VI, stimulating the proliferation of fibroblast and increasing the collagen synthesis. It is clinically used for the treatment of secondary erythema caused by the radiation therapy as well as degree I, degree II burns and skin trauma that has not yet infected.
(1) radiation-induced skin damage: Recommended: application of 2 to 3 times with each administration within the same interval; gently massage to make the skin absorb it.
(2) Ⅱ-degree burns and other skin trauma: After cleaning the wounds, apply a thick layer of drug on the wound surface; repeat the application to make trauma be treated with a sufficient amount of drugs. If necessary, apply a moist wet dressing for wrapping. Do not use dry absorbent dressing.
(3) Ⅰ degree burns: Apply a thick layer until the skin doesn’t absorb the drug anymore and gently massage. Repeat 2 to 4 times a day.
Shake the amine gently with Linde type 4A molecular sieves for 24hours, filter and fractionate it under a vacuum, and preferably in the presence of N2. Store it in dark stoppered bottles under N2 as it is hygroscopic, and turns brown in air and light. It has a strong ammoniacal odour (like diethanolamine). It is miscible with H2O, MeOH and Me2CO, and its solubilities at 25o in n-heptane, Et2O and *C6H6 are 0.4%, 1.6% and 4.2%, respectively. [See diethanolamine above, Beilstein 4 IV 1524.]
Early strength agent
Triethanolamine is currently a commonly used early strength agent used in China's cement industry with the effect of early strength agent being accelerating hydration process of the cement in the presence of liquid phase in the concrete to improve the early strength. Although triethanolamine does not change the hydration product of cement, it can enhance the activity of the colloid generated through the hydration of cement, producing pressure to surrounding regions, blocking the capillary channel, exacerbating the effect of the adsorption, wetting and dispersion of particles and so on, promoting the reaction of the formation of hydrated calcium sulfoaluminate between the C3A and gypsum. This can improve the density of concrete, anti-permeability and antifreeze property, playing the role of early strength and enhancing the strength.
When used in combination with inorganic salts, it can play a catalytic role due to the hydration of cement itself and the reaction between inorganic salts and cement, so that the effect of early strength is particularly significant in the case.
Triethanolamine appears as colorless oily liquid with the smell of ammonia. It is easy to absorb water and will turn into brown color when being exposed to the air and the light. At low temperature, it will become colorless or pale yellow cubic crystal. It has a melting point of 21.2 ℃, boiling point of 335.4 ℃, 277 ℃ (19.950kPa), 206~207 ℃ (1.995kPa), relative density of 1.1242, the refractive index of 1.4852. Its Kb is 2.5 × 10-10 with the pH of its 1.0 mol/L aqueous solution being 10.5. It is miscible with water, methanol and acetone. It is soluble in benzene, ether, slightly soluble in carbon tetrachloride, n-heptane. It is a kind of strong alkaline, combining with protons, can be used for condensation reaction.
In analytical chemistry, triethanolamine can be used as the stationary phase for the gas liquid chromatography (the maximum temperature is 75 ℃ with the solvent being methanol and ethanol), used for the separation of pyridine and methyl substitutes. In the complexometric titration and other analysis, it can be used as a masking agent for interfering ions. For example, in a solution of pH = 10, when we apply EDTA for titration of magnesium, zinc, cadmium, calcium, nickel and other ions, the reagent can be used for masking titanium, aluminum, iron, tin and some other ions. In addition, it can also be dubbed with hydrochloric acid into a buffer solution of a certain pH value.
Triethanolamine is mainly used in the manufacture of surfactants, liquid detergents, cosmetics and so on. It is one of the components of cutting fluid and antifreeze fluid. During the nitrile rubber polymerization, it can be used as an activator, being the vulcanization activator of natural rubber and synthetic rubber. It can also be used as the emulsifiers of oil, wax and pesticides, the moisturizer and stabilizer of cosmetics, textile softeners as well as the anti-corrosion additives of lubricants. Triethanolamine is also capable of absorbing carbon dioxide and hydrogen sulfide and other gases. During the cleaning of the coke oven gas and other industrial gases, it can be used for removal of acid gases. It is also a commonly used masking agent in the EDTA titration assay.
China provided the allowable concentration in the air is 3 μg/g.