Alkanolamines, physical properties

Table 1. Physical Properties of Alkanolamines Prepared from Ammonia and Olefin Oxides...

Amino-2-ethyl-l,3-propanediol commercial alkanolamine, 2 114t physical properties of, 2 114t... 

Physical properties of the six commercial alkanolamines are given in Table 2. Because 2-amino-2-methyl-1-propanol (AMP) and... 

Table 10.4 lists the physical properties of six alkanolamines. The eth-anolamines and monoisopropanolamine are clear liquids at room temperatures while the diisopropanolamine and triisopropanolamine are low melting-point solids at room temperature (m.p. 44 C). All of the products have a characteristic mild amine odor and are very hygroscopic in nature. The alkanolamines all have high boiling points and flash points as well as very high viscosities. The three Antoine constants (A,B,C) that are available for the alkanolamines can be substituted into the equation... 

The alkanolamines most frequently used are triethanolamine (TEA), methyldiethanolamine (MDEA), dimethylethanolamine (DMEA), and 3-(dimethylamino)-l,2-propanediol (DMAPD). Other types of esteramines are prepared from aminoethylethanolamine (AEEA) or other ethoxylated amines (Fig. 1). Some physical properties of the alkanolamines are listed in Table 1 [2]. Most alkanolamines are soluble in water. 

TABLE 2 Compilation of Acute and Chronic Toxicity Data of Esterquats and Their Degradation Products to Aquatic Organisms [14,37,38] Physical Properties of Some Alkanolamines... 

In addition to the equipment properties and selected operating conditions, the process performance depends to a large extent on the state of the active solvent component(s). Commonly nsed solvents include physical solvents like methanol (Rectisol) and the dimethyl ethers of polyethylene glycol (Selexol), chemical solvents like aqneous solutions of carbonates such as K2CO3 and Na2C03, of amino acid salts such as mixtures of potassium hydroxide and alanine or tanrine, and especially of alkanolamines such as mono-ethanolamine (MEA), di-ethanolamine (DEA), (activate) methyl-di-ethanolamine (MDEA), di-isopropanolamine (DIPA), di-glycolamine (DGA), 2-amino-2-methyl-l-propanol (AMP), and piperazine (PZ) (1). 

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