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Journal articles on the topic 'Orthophosphoric acid'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Young, Jay A. "Orthophosphoric Acid (85%)." Journal of Chemical Education 84, no. 7 (2007): 1103. http://dx.doi.org/10.1021/ed084p1103.

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2

Dergacheva, N. P., N. V. Kochetkova, S. V. Fomichev, and V. A. Krenev. "Basalt leaching with orthophosphoric acid." Inorganic Materials 45, no. 12 (2009): 1366–69. http://dx.doi.org/10.1134/s0020168509120115.

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3

Bidos, Volodymyr, Iurii Sidun, Khrystyna Sobol, and Sergii Rybchynskyi. "OVER-STABILIZED BITUMEN EMULSIONS MADE FROM EMULSIFIERS FOR SLOW-SETTING EMULSIONS." Theory and Building Practice 2023, no. 2 (2023): 42–47. http://dx.doi.org/10.23939/jtbp2023.02.042.

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Formulations of road over-stabilized cationic bitumen emulsions with orthophosphoric, sulfuric and hydrochloric acids and cationic emulsifiers for slowly disintegrating emulsions have been designed. The physical and mechanical properties of the manufactured over-stabilized bitumen emulsions and their breaking behavior were determined. It has been established that over-stabilised bitumen emulsions demonstrate good storage stability for 180 days. The obtained results of breaking behavior bitumen emulsions indicate that emulsions based on hydrochloric and sulfuric acid have a shorter fines mixing

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4

Grover, Liam M., Uwe Gbureck, David Farrar, and J. E. Barralet. "The Mechanical Properties and Microstructures of Cement Formed from Pyrophosphoric and Orthophosphoric Acids." Key Engineering Materials 284-286 (April 2005): 125–28. http://dx.doi.org/10.4028/www.scientific.net/kem.284-286.125.

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In this study the setting times, compressive strengths and microstructures of cements formed using pyrophosphoric acid solution and b-tricalcium phosphate (β-TCP; Ca3(PO4)2) were compared with those of cement formed using orthophosphoric acid solution and b-TCP. It was found that cement formed using pyrophosphoric acid solution set more slowly than that formed using orthophosphoric acid and could be mixed to a higher powder to liquid ratio, facilitating the production of cement exhibiting compressive strengths, without pre-compaction, as high as 25 MPa. The use of pyrophosphoric acid as oppose

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5

(Miss), MIRA P. GIDWANI, and S. NARWANI C. "REACTION OF GLYCEROPHOSPHORIC ACID AND ORTHOPHOSPHORIC ACID WITH ISOELECTRIC GELATIN STUDIED BY PHYSICO-CHEMICAL METHODS." Journal Of Indian Chemical Society Vol. 33, April 1956 (2022): 281–84. https://doi.org/10.5281/zenodo.6568586.

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The amount of either glycerophosphuric acid or orthophosphoric acid, bound with 1 g. of isoelectric<sub>.</sub> gelatin at 37<sup>°</sup>, is found to be 80.40X10<sup>-5</sup> g.mol., as determined from the minima of the plateau of the graphs obtained by plotting bound H<sup>+</sup> ions against the equilibrium <em>p</em><sub>H</sub> value of the mixture of gelatin sol and the solutions of the respective acids of concentrations, 0.002-0.016 <em>M</em>; this combination corresponds to 0.01 <em>M</em> initial concentration of either acid, at which both are found to be unused a

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6

Kochetkova, N. V., N. P. Dergacheva, S. V. Fomichev, and V. A. Krenev. "Interaction of basalt with orthophosphoric acid." Russian Journal of Inorganic Chemistry 54, no. 6 (2009): 848–53. http://dx.doi.org/10.1134/s0036023609060060.

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7

Abbasi, Samaneh, Zahra Bagheri, Mobina Dalvandi, and Erfan Ayubi. "Comparative Evaluation of Compressive Bond Strength Between Denture Base and Two Types of Iranian Artificial and Vita Artificial Teeth." Avicenna Journal of Dental Research 17, no. 1 (2025): 1–7. https://doi.org/10.34172/ajdr.1794.

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Background: One of the challenges of complete prosthetics is to achieve the ideal compressive bond strength (BS) between the denture base and artificial teeth and reduce the possibility of teeth separation. Due to the increase in the price of foreign artificial teeth, it is reasonable to utilize high-quality Iranian brands. Therefore, this study aimed to compare the BS between the denture base and two types of Iranian artificial teeth and Vita artificial teeth with a combination of chemical and mechanical surface treatments with orthophosphoric acid. Methods: In this study, 99 maxillary artifi

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8

Merebashvili, Nino. "Replacement of Absorbents Used in Ammonia and Cyanic Industries with High-tech Activated Absorbents." Works of Georgian Technical University, no. 2(524) (June 6, 2022): 33–38. http://dx.doi.org/10.36073/1512-0996-2022-2-33-38.

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Piperazine-activated methyldiethanolamine was selected from various absorbers to purify the converted gas CO2 in the production of ammonia in Rustavi Azot. Purification of converted gas from carbon dioxide is intended to protect the ammonia synthesis catalyst from poisoning and deactivation. The absorbent was selected due to its high capacity with respect to carbon dioxide as well as its lower steam consumption compared to other absorbents during the circulation and regeneration stages. At the expense of the released steam, a condensing power plant was introduced, through which the plant will

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9

Sidun, Iurii, Khrystyna Sobol, Yurii Novytskyi, and Sergii Rybchynskyi. "FEATURES OF THE MIX TIME OF BITUMEN EMULSIONS WITH CEMENT FOR SLURRY SURFACING TECHNOLOGY." Theory and Building Practice 2023, no. 2 (2023): 12–17. http://dx.doi.org/10.23939/jtbp2023.02.012.

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Pavement grade cationic bitumen emulsions formulations were developed for Slurry Surfacing based on orthophosphoric and hydrochloric acids with both all-purpose and specialized emulsifiers used. As a result, there were established relations of mix time upon cement - for Slurry Surfacing based on various acids and emulsifiers. Mix time of Slurry Surfacing mix (having different cement content) with bitumen emulsions on both orthophosphoric and hydrochloric acids is characterized by parabolic relation, branches of the parabola going down. Still, parabola slope steepness for Slurry Surfacing with

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10

Dahmas, R., and S. Meddah. "Impact of Orthodontic Treatment on Salivary pH Variation." EAS Journal of Dentistry and Oral Medicine 7, no. 02 (2025): 97–99. https://doi.org/10.36349/easjdom.2025.v07i02.006.

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Introduction: Orthodontics, a dental specialty focused on correcting dental anomalies and malocclusions, frequently relies on materials such as orthophosphoric acid (H₃PO₄) for enamel etching during bracket bonding procedures. However, this acid may induce changes in salivary pH, potentially altering the oral microbiota and increasing the prevalence of mucosal lesions. Methods: A clinical and epidemiological study was conducted on 30 patients aged between 10 and 25 years, all undergoing fixed multibracket orthodontic therapy. Salivary pH variations were measured before and after the applicatio

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11

Sablania, Praveen, Montosh Chakraborty, and Jiut R. Keshari. "Enhancing sensitivity of phenol-sulfuric acid assay using orthophosphoric acid as modifier." International Journal of Scientific Reports 5, no. 6 (2019): 150. http://dx.doi.org/10.18203/issn.2454-2156.intjscirep20192076.

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<p class="abstract"><strong>Background:</strong> Phenol-sulfuric acid assay has been widely used for quantification of sugars in biological fluid and industry. The conventional method originally proposed by Dubois et al, was modified several times for enhancing sensitivity of assay such as substituting phenol with other chromogens, by optimizing assay conditions and by adding phenol after dehydration reaction. Both conventional and modified assays have utilized acid catalysis property of sulphuric acid but effect of adding phosphoric acid has not been studied before.</p&gt

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12

Sidun, Iurii, Oleksiy Vollis, Volodymyr Hidei, and Volodymyr Bidos. "Quick-traffic slurry surfacing mix with orthophosphoric acid." Production Engineering Archives 27, no. 3 (2021): 191–95. http://dx.doi.org/10.30657/pea.2021.27.25.

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Abstract Bitumen emulsions for slurry surfacing mix technology using oxidized bitumen and hydrochloric and orthophosphoric acids on laboratory DenimoTech bitumen-emulsion plant are made in the work. Methylene blue adsorption index of granite aggregate for use in slurry surfacing mix was investigated. Comparatively mix time and cohesion strength build-up of selected compositions slurry surfacing mix with hydrochloric and orthophosphoric acids depending on the variable content of bitumen emulsion. The advantage of using orthophosphoric acid in slurry surfacing mix according to the cohesion stren

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13

Kuzin, A. V., I. G. Gorichev, E. A. Eliseeva, and L. E. Slynko. "The Effect of Stoichiometry of Iron (II) and (III) and Magnetite Oxides on the Kinetic Regularities of their Dissolution in Orthophosphoric Acid Containing Fe (II) and Fe (III) Ions." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 83 (2019): 104–13. http://dx.doi.org/10.18698/1812-3368-2019-2-104-113.

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The kinetics of dissolution of iron oxides FeO, α-Fe2O3 and Fe3O4 in orthophosphoric acid, including those containing additions of Fe (II) and Fe (III) ions (in the form of perchlorates), has been studied. The values of the stationary potential in the magnetite electrode system--solutions of orthophosphoric acid, including those containing additions of Fe (II) and Fe (III) ions are determined. The dissolution of Fe3O4 in orthophosphoric acid has been studied and described. Based on the experimental results, it was established that the stimulating and inhibitory effect of Fe (II) and Fe (III) i

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14

Yeritsyan, Mejlum L., Armen M. Arustamyan, Inessa N. Sirekanyan, Lena G. Mkoyan, and Lilit O. Stepanyan. "NEW TYPES OF FLAME RETARDANTS BASED ON PHOSPHATE DERIVATIVES." Proceedings of the YSU B: Chemical and Biological Sciences 56, no. 2 (258) (2022): 131–35. http://dx.doi.org/10.46991/pysu:b/2022.56.2.131.

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One of the main problems of nature conservation and protection of the environ-ment is the reducing of flammability of natural and synthetic materials as well as products based on them. In order to obtain non-combustible materials such as flame retardants, monosodium salt of orthophosphoric acid, urea, thiourea and their mono-methylol derivatives, as well as N-monomethylol acrylamide were used in this work. The reaction for the synthesis of the mentioned compounds was carried out in the presence of a small amount of water. During the reaction between urea and monosodium salt of orthophosphoric

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15

Kwolek, Przemysław, Kamil Dychtoń, Barbara Kościelniak, Andrzej Obłój, Agnieszka Podborska, and Marek Wojnicki. "Gallic Acid as a Potential Green Corrosion Inhibitor for Aluminum in Acidic Solution." Metals 12, no. 2 (2022): 250. http://dx.doi.org/10.3390/met12020250.

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Plant extracts are intensively studied as green corrosion inhibitors of aluminum. Because these extracts are complex systems, the influence of their individual constituents on the corrosion of aluminum should be determined. In this work, gallic acid was tested for the first time as a corrosion inhibitor of aluminum in orthophosphoric acid aqueous solution. So far, its potential inhibiting properties in acidic solutions were only suggested based on promising results obtained for various plant extracts. Evaluation of the potential inhibiting properties of gallic acid was performed using electroc

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16

Jumanca, Daniela, Anamaria Matichescu, Atena Galuscan, Laura Cristina Rusu, and Cornelia Muntean. "Comparative Study of Acid Etching on Dental Enamel." Revista de Chimie 69, no. 10 (2018): 2913–15. http://dx.doi.org/10.37358/rc.18.10.6652.

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This experimental study aims to analyse the effectiveness of various materials used in demineralisation of dental enamel. This work aims to create a mechanical bond by filling the pegs with sealing material. In order to achieve this goal, five teeth were compared using different concentrations of orthophosphoric acid and exposure times. In this regard, five different tests were performed and the results were analysed using the SEM technique (scanning electron microscopy). These comparative analyses revealed that etching using 35% orthophosphoric acid for one minute and etching using Icon Etch

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17

Liutyi, R. V., A. S. Kocheshkov, О. М. Myslyvchenko, and D. V. Liuta. "Creation of binders for casting cores from orthophosphoric acid and aluminosilicate fillers." Metal and Casting of Ukraine 31, no. 2 (2023): 73–82. http://dx.doi.org/10.15407/steelcast2023.02.073.

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The article presents the results of the research of aluminophosphate binders, which were obtained as a result of the chemical interaction of orthophosphoric acid with dust-like aluminosilicates. The subjects of the research are the phase and chemical composition, the dynamics of thermal transformations of the binders, as well as the properties of core mixtures with them. In the experiments, it was established that due to the chemical interaction of dust-like pyrophyllite Al2(OH)2[Si4O10] or dystensillimanite Al2O[SiO4] with orthophosphoric acid after heating to 300 ºC, strong and thermally sta

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18

Lercher, J. A., and G. Rumplmayr. "Controlled decrease of acid strength by orthophosphoric acid on ZSM5." Applied Catalysis 25, no. 1-2 (1986): 215–22. http://dx.doi.org/10.1016/s0166-9834(00)81239-7.

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19

Kuzin, A. V., A. V. Lobanov, V. A. Shelonzev, E. A. Eliseeva, and A. S. Samadov. "Process of magnetite dissolution in orthophosphoric and sulfuric acid solutions according to kinetic and electrochemical methods." Himičeskaâ fizika 43, no. 5 (2024): 20–26. https://doi.org/10.31857/s0207401x24050039.

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The kinetics of dissolution and the electrochemical features of the behavior of magnetite (at cathodic polarization) in solutions of sulfuric and orthophosphoric acids have been studied. Two independent experimental methods established that the rate and current of dissolution in H3PO4 are higher than in H2SO4. This pattern is explained on the basis of the stronger complexing properties of various kinds of phosphate anions in comparison with sulfate anions in solution with iron(III) ions. In the range of studied concentrations of orthophosphoric and sulfuric acids, Fe(II) and Fe(III) ions, the

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20

E., Resongles, Le Pape P., Fernandez-Rojo L., et al. "Routine determination of inorganic arsenic speciation in precipitates from acid mine drainage using orthophosphoric acid extraction followed by HPLC-ICP-MS." Analytical Methods 8, no. 40 (2016): 7420–26. http://dx.doi.org/10.1039/c6ay02084d.

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21

Ierardo, G., G. Di Carlo, F. Petrillo, et al. "Er:YAG Laser for Brackets Bonding: A SEM Study after Debonding." Scientific World Journal 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/935946.

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Background. The introduction of Er:YAG laser in dentistry for ablation of hard tissues advocated an alternative method of enamel etching for orthodontics purpose.Materials and Methods. 55 extracted human third molars were inserted in acrylic resin blocks and divided into five groups of 11 teeth. Group 1 was treated with 37% orthophosphoric acid for 30 seconds. Group 2 was treated with laser irradiation (Er:YAG Fidelius III, Fotona, Slovenia) at 80 mJ and 4 Hz. Group 3 underwent laser treatment (80 mJ, 4 Hz), followed by 37% orthophosphoric acid for 30 seconds. The teeth in Group 4 were treated

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22

Notario, J. S., J. E. Garcia, J. M. Caceres, I. J. Arteaga, and M. M. Gonzalez. "Characterization of natural phillipsite modified with orthophosphoric acid." Applied Clay Science 10, no. 3 (1995): 209–17. http://dx.doi.org/10.1016/0169-1317(95)00025-y.

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23

Arslan, Mustafa, and Mustafa Boybay. "The interaction of orthophosphoric acid and fly ash." Resources, Conservation and Recycling 9, no. 4 (1993): 295–310. http://dx.doi.org/10.1016/0921-3449(93)90010-d.

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24

Fedorova, I. V., S. P. Krishtal, M. G. Kiselev, and L. P. Safonova. "Structure of orthophosphoric Acid-N,N-dimethylformamide complexes." Russian Journal of Physical Chemistry 80, S1 (2006): S7—S13. http://dx.doi.org/10.1134/s0036024406130024.

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25

de las Pozas, Carlos, Waclaw Kolodziejski, and Rolando Roque-Malherbe. "Modification of clinoptilolite by leaching with orthophosphoric acid." Microporous Materials 5, no. 5 (1996): 325–31. http://dx.doi.org/10.1016/0927-6513(95)00072-0.

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26

Pasenko, O., A. Mandryka, Ye Khrupchyk, and V. Vereshchak. "Stable solutions of orthosilicic acid." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 4 (July 2022): 56–60. http://dx.doi.org/10.32434/0321-4095-2022-143-4-56-60.

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Soluble silicon plays a significant role in living organisms. Orthosilicic acid is the only bioavailable form of silicon. Sodium silicate solutions with various silicate moduli and different types of acids were used in our work to investigate the effect of silicate modulus and types of acids on the stability of the solutions of orthosilicic acid. It was determined that both the silicate modulus and the type of acid have a certain impact on the stability of orthosilicic acid solution. The effect of sulfuric, hydrochloric, orthophosphoric and methanesulfonic acid on the stability of orthosilicic

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27

Ravichandran, Harshini, C. Vishnu Rekha, Dhanraj Kalaivanan, Sumaiyya Saleem, Sai Sarath Kumar Kothimbakkam, and A. K. R. Santhosh Priya. "An Assessment of the Impact of Erbium Laser and Conventional Etching Techniques on Microleakage, Shear, and Microtensile Bond Strength of Hydrophobic and Hydrophilic Pit and Fissure Sealant – An In vitro Study." Journal of Indian Association of Public Health Dentistry 23, no. 2 (2025): 112–23. https://doi.org/10.4103/jiaphd.jiaphd_121_24.

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Abstract Purpose: In recent years, laser etching has emerged as an alternative to conventional acid etching for enamel surface pretreatment due to its drawbacks. This method can be used as a substitute for preparing pits and fissures before sealing. The study aims to compare the impact of laser etching and conventional etching on microleakage, shear, and microtensile bond strength of hydrophobic and hydrophilic pit and fissure sealants. Methodology: The present in vitro study was performed on 60 healthy premolars which were extracted for orthodontic purposes which was cleaned and disinfected.

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28

Olimova Mohinur Karimjon qizi. "Antipyrene preparation based on phosphoric acid with carbamide." International Journal on Integrated Education 3, no. 10 (2020): 292–99. http://dx.doi.org/10.31149/ijie.v3i10.761.

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In this work, we have carried out research on the synthesis of nitrogen and phosphorus-containing fire retardants. Epichlorohydrin, urea, melamine, ammonium dihydrogen phosphate, orthophosphoric acid, morpholine were selected as objects of research

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29

Abouzeid, Fatma M. "Study of Steel Electro-dissolution Behavior in Presence of Some Surfactants. Electrochemical Investigation and Surface Active Properties Determination." Revista de Chimie 72, no. 3 (2021): 179–97. http://dx.doi.org/10.37358/rc.21.3.8447.

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Steel electro-dissolution performance was investigated in orthophosphoric acid in the presence of N-oleyl 1.3 diaminopropane, Benzalkounuim chloride, Soduim lauryl sulphate and Di-Isononyl phthalate as a surfactant using potentiodynamic polarization measurements. The retardation performance of these surfactants was examined. The surfactant surface active parameters were estimated based on surface tension measurements. The parameters calculated comprise the critical micelle concentration (CMC), maximum surface excess (Гmax), minimum surface area (Amin) and effectiveness (πCMC). The micellizatio

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30

Lishai, N. V., Mengwei Li, A. V. Mamaev, et al. "Production of activated carbons from different types of cellulose-containing raw materials using orthophosphoric acid." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 61, no. 1 (2025): 56–64. https://doi.org/10.29235/1561-8331-2025-61-1-56-64.

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Currently, the search for relatively inexpensive raw materials from renewable plant resources to obtain activated carbons based on them remains relevant. The thermochemical destruction of various cellulose-containing plant materials has been studied: pine bark and sawdust, flax tow and cereal straw. The conditions for obtaining activated carbons from them using orthophosphoric acid as an activator have been determined. 68 % concentration of the orthophosphoric acid has been established to be the most optimal for obtaining activated carbons from plant materials by thermochemical activation. It

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31

Shakhbazov, E. G., Kh I. Hasanov, and N. N. Khalilov. "Inhibitor for nitrogen-containing hardness deposition based on ethanolammonium phosphates." SOCAR Proceedings, no. 2 (June 30, 2022): 067–72. http://dx.doi.org/10.5510/ogp20220200676.

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The inhibitors based on nano-containing compositions (NCC) have been developed for hardness deposition. A method for developing an inhibitor for saline deposits involves the interaction of amino alcohols with orthophosphoric acid by adding nanoparticles and further diluting them with water to form a 2% solution. It was found out that the inhibitors developed by NSC for saline deposits at a flow rate of 20-30 mg/l are highly effective for controlling the deposits of calcium and magnesium sulfate in the produced water model. The controlling effect of inhibition in these cases is 86.3-99.4%. Keyw

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32

Filonenko, О. V., E. M. Demianenko, and V. V. Lobanov. "Quantum chemical modeling of orthophosphoric acid adsorption sites on hydrated anatase surface." Surface 12(27) (December 30, 2020): 20–35. http://dx.doi.org/10.15407/surface.2020.12.020.

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Quantum chemical modeling of orthophosphoric acid adsorption sites on the hydrated surface of anatase was performed by the method of density functional theory (exchange-correlation functional PBE0, basis set 6-31 G(d,p)). The influence of the aqueous medium was taken into account within the framework of the continual solvent model. The work uses a cluster approach. The anatase surface is simulated by a neutral Ti(OH)4(H2O)2 cluster. The results of analysis of the geometry and energy characteristics of all the calculated complexes show that the highest interaction energy is inherent to the inte

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33

Ochoa-Martínez, Efraín, Cándido Vázquez, Daniel Solís, et al. "Fabrication and characterization of thin silicon solar cells produced by in-line spray coating." RSC Advances 5, no. 87 (2015): 71379–86. http://dx.doi.org/10.1039/c5ra12398d.

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34

Anumula, Rajini, Ajay Kumar Adepu, Suman Chirra, Suresh Siliveri, and Venkatathri Narayanan. "Titanium aminophosphates: synthesis, characterization and crystal violet dye degradation studies." RSC Advances 6, no. 1 (2016): 507–14. http://dx.doi.org/10.1039/c5ra22210a.

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Titanium aminophosphates are prepared using titanium tetraisopropoxide, orthophosphoric acid and aliphatic amines. Their detailed characterization and catalytic crystal violet dye degradation were studied.

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35

Fornaini, C., S. Petruzzella, R. Podda, E. Merigo, S. Nammour, and P. Vescovi. "Er:YAG Laser and Fractured Incisor Restorations: AnIn VitroStudy." International Journal of Dentistry 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/617264.

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Introduction. The aim of this study was to analyse the effects of an Er:YAG laser on enamel and dentine in cases of dental restorations involving fractured teeth, utilizing the dental fragment.Materials and Methods. Seventy-two freshly extracted bovine incisors were fractured at the coronal level by using a hammer applied with a standardized method, and the fragment was reattached by using three different methods: Er:YAG laser, orthophosphoric acid, and laser plus acid. The different groups were evaluated by a test realized with the dynamometer to know the force required to successfully detach

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36

Kuzin, A. V., I. G. Gorichev, V. A. Shelontsev, E. A. Eliseeva, and A. V. Mamankov. "Dissolution of Magnetite in Orthophosphoric Acid: Study and Modeling." Russian Metallurgy (Metally) 2021, no. 3 (2021): 260–66. http://dx.doi.org/10.1134/s0036029521030083.

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37

Kutvitskii, V. A., I. A. Romanova, O. I. Ostanina, and F. N. Karachevtsev. "Interaction Kinetics of Bismuth Borate Glasses and Orthophosphoric Acid." Glass and Ceramics 78, no. 9-10 (2022): 385–91. http://dx.doi.org/10.1007/s10717-022-00417-0.

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38

Bel’chinskaya, L. I., K. A. Kozlov, S. S. Chitechan, A. V. Bondarenko, G. A. Petukhova, and M. L. Gubkina. "Adsorption characteristics of nanoporous montmorillonite activated with orthophosphoric acid." Protection of Metals 44, no. 3 (2008): 275–79. http://dx.doi.org/10.1134/s0033173208030107.

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39

Srinivasan, Bikshandarkoil R. "Does an ‘l-arginine doped orthophosphoric acid’ crystal exist?" Journal of Luminescence 148 (April 2014): 370–72. http://dx.doi.org/10.1016/j.jlumin.2013.12.035.

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40

Osaka, A., Y. Miura, K. Takeuchi, M. Asada, and K. Takahashi. "Calcium apatite prepared from calcium hydroxide and orthophosphoric acid." Journal of Materials Science: Materials in Medicine 2, no. 1 (1991): 51–55. http://dx.doi.org/10.1007/bf00701687.

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41

Hafiane, Amor, Mahmoud Dhahbi, Xavier Chasseray, and Daniel Lemordant. "Surface Activity ofn-Alkyltrimethylammonium Bromides in Concentrated Orthophosphoric Acid." Journal of Colloid and Interface Science 205, no. 1 (1998): 21–25. http://dx.doi.org/10.1006/jcis.1998.5586.

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42

Kwolek, Przemysław. "Corrosion behaviour of 7075 aluminium alloy in acidic solution." RSC Advances 10, no. 44 (2020): 26078–89. http://dx.doi.org/10.1039/d0ra04215c.

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43

Lapinska, Barbara, Jacek Rogowski, Joanna Nowak, Joseph Nissan, Jerzy Sokolowski, and Monika Lukomska-Szymanska. "Effect of Surface Cleaning Regimen on Glass Ceramic Bond Strength." Molecules 24, no. 3 (2019): 389. http://dx.doi.org/10.3390/molecules24030389.

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This study investigated the effect of saliva contamination on chemical changes of ceramic surface as well as the influence of saliva cleaning methods on ceramic-resin bond strength. Saliva was used to contaminate leucite (LGC) and lithium disilicate (LDGC) glass ceramic surfaces. The following cleaning methods were tested: water spray, cleaning with orthophosphoric acid, universal cleaning paste, ultrasonic cleaning with water, re-etching with hydrofluoric acid. Non-contaminated ceramic sample served as control. Chemical analysis of ceramic surfaces was performed using time-of-flight secondary

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44

Zarbaliyeva, I. A. "NEW SURFACTANTS BASED ON UNDECANOIC ACIDS, PROPYLENE OXIDE, ORTHOPHOSPHORIC ACID AND ETHANOLAMINES." Chemical Problems 15, no. 2 (2017): 192–200. http://dx.doi.org/10.32737/2221-8688-2017-2-192-200.

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Mizuno, Megumi, Masahide Takahashi, and Toshinobu Yoko. "Structure and water durability of tin(II) organosilicophosphate glasses prepared by nonaqueous acid–base reactions." Journal of Materials Research 21, no. 7 (2006): 1798–806. http://dx.doi.org/10.1557/jmr.2006.0223.

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Tin(II) organosilicophosphate glasses were prepared by nonaqueous acid–base reactions using orthophosphoric acid, dimethyldichlorosilane, and tin(II)chloride as the starting materials. The structure of the methylsiloxane-phosphate copolymer (methylsilicophosphate) and tin(II) methylsilicophosphate glasses was mainly investigated by the 31P nuclear magnetic resonance technique. A chain structure composed of the –(P–O–Si–O)m– silicophosphate bonds was found as the main structural unit in the methylsilicophosphate prepared by mixing orthophosphoric acid and dimethyldichlorosilane at room temperat

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46

Ribeiro, Christine Maria Carneiro Maranhão, Anne Jaciele Da Silva, Clayton A. Azevedo Filho, Emmanuela Prado de Paiva Azevedo, Marcella Melo Assis Costa, and Maria Inês Sucupira Maciel. "Validation of a HPLC-DAD method for quantification of ascorbic acid in mixed juice powder of acerola and seriguela / Validação de um método HPLC-DAD para quantificação de ácido ascórbico de suco misto em pó de acerola e seriguela." Brazilian Journal of Development 8, no. 5 (2022): 38404–20. http://dx.doi.org/10.34117/bjdv8n5-373.

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The objective of this work was to optimize extraction process and to validate the HPLC-DAD method for quantification of ascorbic acid content in mixed juice powder of acerola and seriguela with different dextrose equivalent maltodextrin (5, 10, 15) as an encapsulating agent. The influence of the extraction variables was studied through factorial design. Control variables were mass, percent of orthophosphoric acid and stirring time. Chromatographic method was validated in terms of precision, selectivity, linearity and accuracy. Chromatographic and titrimetry results were compared for all dextro

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47

Rusciano, D., E. Agostini, C. Ceccarini, and B. Terrana. "One-step, high-yield purification of human prostatic acid phosphatase from seminal fluid by gel-filtration HPLC under nondenaturing conditions." Clinical Chemistry 34, no. 5 (1988): 984–86. http://dx.doi.org/10.1093/clinchem/34.5.984.

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Abstract This is a fast, efficient method for purification to homogeneity of human prostatic acid phosphatase [orthophosphoric-monoester phosphohydrolase (acid optimum), EC 3.1.3.2], from seminal fluid. Use of a "high-pressure" liquid-chromatographic gel-filtration column permits high-yield recovery of the purified enzyme with most of its enzymatic and immunological activity retained.

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Ostafiychuk, B. K., R. P. Lisovskiy, Al-Saedi Abdul Halek Zamil, et al. "Effect of Orthophosphoric Acid on Morphology of Nanoporous Carbon Materials." Journal of Nano- and Electronic Physics 11, no. 3 (2019): 03036–1. http://dx.doi.org/10.21272/jnep.11(3).03036.

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Purcell, James M., and Helmut Pessen. "Proton Longitudinal Relaxation Rates of Water in Aqueous Orthophosphoric Acid." Analytical Letters 19, no. 19-20 (1986): 1917–37. http://dx.doi.org/10.1080/00032718608064536.

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Safonova, L. P., Y. A. Fadeeva, L. E. Shmukler, and A. N. Kinchin. "Thermodynamic investigation of the orthophosphoric acid—N,N-dimethylformamide system." Journal of Molecular Liquids 121, no. 1 (2005): 53–57. http://dx.doi.org/10.1016/j.molliq.2004.08.026.

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