sodium salts
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Fuel ◽  
2022 ◽  
Vol 312 ◽  
pp. 122844
Author(s):  
Homa Rezaei ◽  
Sied Ziaedin Shafaei ◽  
Hadi Abdollahi ◽  
Alireza Shahidi ◽  
Sina Ghassa

Author(s):  
V.S. Talismanov ◽  
S.V. Popkov ◽  
S.S. Zykova ◽  
О.G. Karmanova

In vitro tests of substituted 1,3-dioxolanes, based on cyclic ketones and substituted with 1H-1,2,4-triazole and 1H-imidazole showed a fungicidal activity lower than the activity of the triadimefon, and spiroxamine. Studied compounds in the entire concentration range: from 0.001 to 10 mg/L showed noticeable retardant properties. The target compounds were derived by cyclization of substituted cyclohexanones with epichlorohydrin followed by alkylation of the derived 2 chloromethyl-1,3 dioxolanes of sodium salts of imidazole or 1,2,4-triazole.


2021 ◽  
Vol 8 ◽  
Author(s):  
Jaber A. Alshehri ◽  
Daniel M. Gill ◽  
Alan M. Jones

The treatment of common steroids: estrone, estradiol, cortisol, and pregnenolone with tributylsulfoammonium betaine (TBSAB) provides a convenient chemoselective conversion of the steroids alcohol/phenol moiety to the corresponding steroidal organosulfate. An important feature of the disclosed methodology is the millimolar scale of the reaction, and the isolation of the corresponding steroid sulfates as their biologically relevant sodium salts without the need for ion-exchange chromatography. The scope of the method was further explored in the estradiol and pregnanediol steroid systems with the bis-sulfated derivatives. Ultimately, a method to install an isotopic label, deuterium (2H) combined with estrone sulfation is a valuable tool for its mass-spectrometric quantification in biological studies.


Author(s):  
Hong-Sik Hwang ◽  
Jill Winkler-Moser ◽  
Sean Liu

Previous studies reported that several amino acids had strong antioxidant activity in vegetable oils under frying conditions. In this study, the carboxylic acid group of amino acids was converted to a carboxylate group (-COO-Na+ or -COO-K+), a heating study was conducted with amino acid salts in soybean oil at 180 ºC. Sodium salts of amino acids including alanine, phenylalanine, and proline and disodium glutamate had significantly stronger antioxidant activity than the corresponding amino acids, and potassium salts had stronger antioxidant activity than sodium salts. Potassium salts of alanine and phenylalanine more effectively retained tocopherols in soybean oil than the corresponding amino acids during heating. Phenylalanine potassium salt had stronger antioxidant activity than phenylalanine in other vegetable oils including olive, high oleic soybean, canola, avocado, and corn oils. Phenylalanine potassium salt at 5.5. mM more effectively prevented oil oxidation than tert-butyl hydroquinone (TBHQ), a synthetic antioxidant, at its legal concentration limit (0.02%) indicating its feasibility as a new antioxidant for frying.


Author(s):  
Ilia Garkul ◽  
Andrey Zadesenets ◽  
Evgeny Filatov ◽  
Iraida Baidina ◽  
Sergey Tkachev ◽  
...  

New coordination compounds trans-bis(oxalato)diaquarhodiate sodium dihydrate Na[Rh(H2O)2Ox2]·2H2O (crystallizes in two polymorphic forms NaRh-1 and NaRh-2), trans-bis(oxalato)hydroxoaquarhodiate sodium tetrahydrate Na2[Rh(H2O)(OH)Ox2]·4H2O (Na2Rh) and trans-bis(oxalato)diaquarhodic acid tetrahydrate (H3O)[Rh(H2O)2Ox2]·4H2O (HRh) are synthesized. The compounds are characterized by IR spectroscopy, elemental analysis and single crystal X-ray diffraction. NaRh-1, NaRh-2 and Na2Rh crystallize in space group P 1. Trans-bis(oxalato)diaquarhodic acid exists not only in solution, but can also crystallize as a tetrahydrate (space group C2/c). The formation of various species in solution of rhodium hydroxide in oxalic acid and their redistribution were studied using 103Rh NMR spectroscopy.


Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1591
Author(s):  
Chunfa Huang ◽  
Zhiguo Liu ◽  
Jianxian Huang ◽  
Qiwen Liu ◽  
Jianguo Li

To get an insight into the residual sodium content of Al–Mg alloys, three types of sodium-containing fluxes were introduced into the melt with different magnesium content. The increment, existing form and distribution of sodium in Al–Mg alloys with different magnesium content were analyzed. The results show that the influence of different sodium salts on the increment of sodium in Al–10Mg alloy is significantly different. The NaF raised the sodium level in Al–10Mg alloy to the highest extent, Na3AlF6 coming second, and NaCl did not have an obvious influence. The magnesium element in the aluminum melt was found to be the key factor leading to the increment of sodium level. After the salt fluxing treatment of aluminum alloy with different magnesium content, this increment would be proportional to the content of magnesium. EDS mapping indicates the sodium introduced by the fluxes was distributed in the form of Na-rich particles in Al–Mg alloys and preferentially located near Al3Mg2(β) phase in the situation of high magnesium content.


Author(s):  
Yali Huang ◽  
Ning Yang ◽  
Yaqiong Zhang ◽  
Jingwen Hou ◽  
Yadong Gao ◽  
...  
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2021 ◽  
Vol 58 (3) ◽  
pp. 409-418
Author(s):  
Sitesh Chatterjee ◽  
Rambilash Mallick ◽  
Chirasree Gangopadhyay ◽  
Purnima Halder ◽  
Indrani Dana ◽  
...  

A field experiment was carried out at Rice Research Station, Chinsurah, Hooghly during rainy (kharif) season, 2016 and 2017 to evaluate the effects of potassium and sodium salts on whorl maggot, leaf folder and yellow stem borer of rice. The yield and yield attributing characters were observed and benefit cost ratio was calculated. The potassium salts viz. potassium chloride (KCl), potassium nitrate (KNO3), potassium sulfate (K2SO4), potassium dihydrogen phosphate (KH2PO4) and sodium salt as sodium chloride (NaCl) were applied by three modes viz. seed soaking for 12 hours before sowing, seedling root dipping for twelve hours before transplanting and foliar sprays at 30 and 50 days after transplanting (DAT). The experimental results revealed that the foliar spray with 1% potassium dihydrogen phosphate salt at 30 and 50 DAT was the best performer against rice insect-pests by lowering down the infestation of leaf folder, dead heart and white ear head and as well as responses for good yield. Maximum benefit was recorded with foliar spray of 1% sodium chloride salt.


Author(s):  
Shichao Wu ◽  
Tichang Sun ◽  
Jue Kou ◽  
Xiaohui Li ◽  
Chengyan Xu ◽  
...  

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