Category: 122-20-3

Zhang, Feng published the artcileEarly hydration and microstructure of cement pastes mixed with low-temperature early strength accelerator at 5°C, Product Details of C9H21NO3, the publication is Guisuanyan Xuebao (2020), 48(2), 211-221, database is CAplus.

A low-temperature early-strength accelerator was designed with three components, such as calcium bromide (CaBr₂), lithium bromide (LiBr) and triisopropanolamine (TIPA). Effect of early-strength accelerator on the strength, setting time and fluidity of cement paste at a low temperature was investigated, and its mechanism of action was discussed based on the perspectives of hydration heat and product microstructure. The results show that the incorporation of low-temperature early-strength accelerator shortens the initial and final setting time of cement pastes, and accelerates the strength development of specimens at a low temperature (i.e., 5°C). The 1-d, 3-d, 7-d and 28-d compressive strength of cement pastes mixed with the low-temperature early-strength accelerator can be increased by 291%, 78%, 62% and 40%, resp., and the strength at each age after 3 d already exceeds that of the contrast sample cured at 20°C. At a low temperature, the early-strength accelerator can shorten the hydration induction period of cement hydration and advance the acceleration period. Furthermore, the maximum heat release rate can be increased by 78%, compared to the contrast sample. The cumulative heat release is increased by 227% and 52% at 12 h and 7 d, resp. The early-strength accelerator can also promote the hydration reaction at the initial stage of cement hydration, increase the content of Ca(OH)₂ in the sample and increase the hydration degree. Large amounts of Ca(OH)₂ are formed in the products at the age of only 12 h, and some products, such as bromine-containing C-S-H gels and hydrated calcium bromoaluminate (Ca₄Al₂O₆Br₂·10H₂O), are also generated. Large amounts of hydration products are accumulated, refining the pore diameter of the specimens at the initial stage of hydration (before 7 d) and decreasing the number of macropores. The total porosity of the cement pastes at 1 and 7 d is decreased by 16% and 31%, resp., thus leading to the denser microstructure.

Guisuanyan Xuebao published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C8H17Br, Product Details of C9H21NO3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Lenca, Nicole published the artcileEstimation of descriptors for hydrogen-bonding compounds from chromatographic and liquid-liquid partition measurements, Application In Synthesis of 122-20-3, the publication is Journal of Chromatography A (2017), 13-22, database is CAplus and MEDLINE.

Retention factors obtained by gas chromatog. and reversed-phase liquid chromatog. on varied columns and partition constants in different liquid-liquid partition systems were used to estimate WSU descriptor values for 36 anilines and N-heterocyclic compounds, 13 amides and related compounds, and 45 phenols and alcs. These compounds are suitable for use as calibration compounds to characterize separation systems covering the descriptor space E = 0.2-3, S = 0.4-2.1, A = 0-1.5, B = 0.1-1.5, L = 2.5-10.0 and V = 0.5-2.2. Hydrogen-bonding properties are discussed in terms of structure, the possibility of induction effects, intramol. hydrogen bonding and steric factors for anilines, amides, phenols and alcs. The relation between these parameters and observed descriptor values are difficult to predict from structure but facilitate improving the general occupancy of the descriptor space by creating incremental changes in hydrogen-bonding properties. It is verified that the compounds included in this study can be merged with an existing database of compounds recommended for characterizing separation systems.

Journal of Chromatography A published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Application In Synthesis of 122-20-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Kondratenko, Yulia A. published the artcileSynthesis, crystal structure and properties of tris(2-hydroxypropyl)ammonium based protic ionic liquids and protic molten salts, Quality Control of 122-20-3, the publication is Journal of Molecular Liquids (2021), 114717, database is CAplus.

Fifteen tris(2-hydroxypropyl)ammonium salts (TPA salts) were first synthesized by a direct reaction of proton transfer from carboxylic acids to tris(2-hydroxypropyl)amine. The composition and structure of synthesized TPA salts were confirmed by NMR (¹H, ¹³C), FT-IR spectroscopy and elemental anal. The crystal structure and conformation of the tris(2-hydroxypropyl)ammonium cation in salts of salicylic, nicotinic and malonic acids were studied by single-crystal X-ray diffraction. Thermal stability studies had shown that TPA salts were protic ionic liquids with melting temperatures below 100°C or room-temperature ionic liquids or molten salts. Selected TPA salts were investigated for their antimicrobial activity against bacterial and fungus strains. In addition, it was shown for the first time that synthesized TPA salts could be used as potential buffer agents for ⁶⁸Ga-radiolabeling of bifunctional chelating agents (BCA) and clin. relevant peptides (PSMA-11, PSMA-617, DOTA-NOC, DOTA-TATE).

Journal of Molecular Liquids published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Quality Control of 122-20-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Fernandes, Tiago A. published the artcileMild homogeneous oxidation and hydrocarboxylation of cycloalkanes catalyzed by novel dicopper(II) aminoalcohol-driven cores, Related Products of alcohols-buliding-blocks, the publication is Journal of Molecular Catalysis A: Chemical (2017), 426(Part_B), 357-367, database is CAplus.

N-benzylethanolamine (Hbea) and triisopropanolamine (H₃tipa) were applied as unexplored aminoalc. N,O-building blocks for the self-assembly generation of two novel dicopper(II) compounds, [Cu₂(μ-bea)₂(Hbea)₂](NO₃)₂ (1) and [Cu₂(H₃tipa)₂(μ-pma)]·7H₂O (2) {H₄pma = pyromellitic acid}. These were isolated as stable and aqua-soluble microcrystalline products and were fully characterized by IR spectroscopy, ESI-MS(±), and single-crystal X-ray diffraction, the latter revealing distinct Cu₂ cores containing the five-coordinate copper(II) centers with the {CuN₂O₃} or {CuNO₄} environments. Compounds 1 and 2 were used as homogeneous catalysts for the mild oxidation of C5-C8 cycloalkanes to give the corresponding cyclic alcs. and ketones in up to 23% overall yields based on cycloalkane. The reactions proceed in aqueous acetonitrile medium at 50 °C using H₂O₂ as an oxidant. The effects of different reaction conditions were studied, including the type and loading of catalyst, amount and kind of acid promoter, and water concentration Despite the fact that different acids (HNO₃, H₂SO₄, HCl, or CF₃COOH) promote the oxidation of alkanes, the reaction is exceptionally fast in the presence of a catalytic amount of HCl, resulting in the TOF values of up to 430 h^-1. Although water typically strongly inhibits alkane oxidations due to the reduction of H₂O₂ concentration and lowering of the alkane solubility, in the systems comprising 1 and 2 we observed a significant growth (up to 5-fold) of an initial reaction rate in the cyclohexane oxidation on increasing the amount of H₂O in the reaction mixture The bond-, regio- and stereo-selectivity parameters were investigated in oxidation of different linear, branched, and cyclic alkane substrates. Both compounds 1 and 2 also catalyze the hydrocarboxylation of C5-C8 cycloalkanes, by CO, K₂S₂O₈, and H₂O in a water/acetonitrile medium at 60 °C, to give the corresponding cycloalkanecarboxylic acids in up to 38% yields based on cycloalkanes.

Journal of Molecular Catalysis A: Chemical published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Related Products of alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Durig, Wiebke published the artcileApplication of a novel prioritisation strategy using non-target screening for evaluation of temporal trends (1969-2017) of contaminants of emerging concern (CECs) in archived lynx muscle tissue samples, Application In Synthesis of 122-20-3, the publication is Science of the Total Environment (2022), 153035, database is CAplus and MEDLINE.

Most environmental monitoring studies of contaminants of emerging concern (CECs) focus on aquatic species and target specific classes of CECs. Even with wide-scope target screening methods, relevant CECs may be missed. In this study, non-target screening (NTS) was used for tentative identification of potential CECs in muscle tissue of the terrestrial top predator Eurasian lynx (Lynx lynx). Temporal trend anal. was applied as a prioritisation tool for archived samples, using univariate statistical tests (Mann-Kendall and Spearman rank). Pooled lynx muscle tissue collected from 1969 to 2017 was analyzed with an eight-point time series using a previously validated screening workflow. Following peak detection, peak alignment, and blank subtraction, 12,941 features were considered for statistical anal. Prioritisation by time-trend anal. detected 104 and 61 features with statistically significant increasing and decreasing trends, resp. Following probable mol. formula assignment and elucidation with MetFrag, two compounds with increasing trends, and one with a decreasing trend, were tentatively identified. These results show that, despite low expected concentration levels and high matrix effects in terrestrial species, it is possible to prioritise CECs in archived lynx samples using NTS and univariate statistical approaches.

Science of the Total Environment published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Application In Synthesis of 122-20-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Toprak, Nurettin Alper published the artcileThe effects of grinding aids on modelling of air classification of cement, Related Products of alcohols-buliding-blocks, the publication is Construction and Building Materials (2018), 564-573, database is CAplus.

Until so far, several studies have been performed on grinding aids which have discussed the influences. However, the evaluations were all based on closed circuited grinding operations where the milling and the classification operations were integrated and had effect with each other. The novelty of this paper comes from its comprehensive test works with only on air classifier and development of grinding aid-specific model structure that has not been performed. Within the scope, laboratory scale air classifier was utilized and triethanolamine (TEA), triisopropanolamine (TIPA), and diethylenglycol (DEG) were mixed with cement at various dosage rates. The exptl. tests were performed at different wheel speed and air flow rates then the performance of the air classification was evaluated by plotting the Tromp curves. As a result, the limited change was observed for cut size and sharpness parameters however, bypass and fish hook parameters changed significantly. Among the grinding aids tested, TIPA type aid was found to be more effective on both bypass and fish hook parameters. Finally, the air classifier was modelled by using Whiten’s equation and the relations between dosage rate, type and model parameters were investigated. The results concluded that different types of grinding aids had varied influences and the model structures needed to be developed accordingly.

Construction and Building Materials published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C18H17NO8, Related Products of alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts