《Kinetics and new Bronsted correlations study of CO2 absorption into primary and secondary alkanolamine with and without steric-hindrance》 was published in Separation and Purification Technology in 2020. These research results belong to Liu, Sen; Ling, Hao; Gao, Hongxia; Tontiwachwuthikul, Paitoon; Liang, Zhiwu; Zhang, Haiyan. Safety of 3-Aminopropan-1-ol The article mentions the following:
To figure out the steric hindrance and its magnitude effects on CO2 absorption performance and Bronsted correlations of primary and secondary alkanolamines, the pKa values and kinetics data (second order reaction rate, k2) were investigated for nine alkanolamines at 293-313 K using pH meter and stopped-flow technique. The tested amines include monoethanolamine (MEA), diethanolamine (DEA), 2-methyl-ethynolamine (MAE), 2-ethyl-ethynolamine (EAE), 1-amino-2-propanol (1-AP), 3-amino-1-propanol (3-AP), 2-amino-2-methyl-1-propanol (AMP), 2-amino-1-propanol (2-AP) and 3-Amino-1,2-propanediol (3-APD). In addition, the equilibrium solubility of MEA, MAE, EAE, 2-AP and AMP were tested for evaluation of steric hindrance effect on carbamate’s stability. The comprehensive anal. of kinetics, solubility and Bronsted correlations indicated that the steric hindrance caused by alkyl group(s) attached to α-C atom has much significant effect on k2 and solubility than that caused by alkyl group connected to amino group. Moreover, the k2 and pKa values for sterically unhindered and hindered amines were sep. fitted at 293-313 K, giving out an AARD of 5.2% and 16.5% between predicted and exptl. k2, resp. Finally, based on mol. structures and exptl. results, mechanism of steric hindrance effect on reaction kinetics was proposed. In the part of experimental materials, we found many familiar compounds, such as 3-Aminopropan-1-ol(cas: 156-87-6Safety of 3-Aminopropan-1-ol)
3-Aminopropan-1-ol(cas: 156-87-6) belongs to anime.Typically the presence of an amine functional group is deduced by a combination of techniques, including mass spectrometry as well as NMR and IR spectroscopies. 1H NMR signals for amines disappear upon treatment of the sample with D2O. In their infrared spectrum primary amines exhibit two N-H bands, whereas secondary amines exhibit only one.Safety of 3-Aminopropan-1-ol
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts