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Magnesium nitrate hexahydrate

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Magnesium nitrate hexahydrate is a chemical compound with the formula Mg(NO3)2·6H2O. It is a crystalline solid that is soluble in water and other polar solvents. Magnesium nitrate hexahydrate is commonly used as a laboratory reagent and in various industrial applications.

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Lab products found in correlation

Calcium nitrate tetrahydrate, by Merck Group (3 mentions) Ammonium hydroxide, by Merck Group (2 mentions) Chitosan, by Merck Group (2 mentions) Magnesium oxide, by Thermo Fisher Scientific (2 mentions) Hydrochloric acid (hcl), by ITW Reagents (2 mentions) Hyperpure nitric acid, by ITW Reagents (2 mentions) Milli q reference water purification, by Merck Group (2 mentions) Lanthanum chloride, by PerkinElmer (2 mentions) Sodium bicarbonate, by Scharlab (2 mentions) Urea, by Thermo Fisher Scientific (1 mentions) Calcium nitrate tetrahydrate, by Thermo Fisher Scientific (1 mentions) Strontium nitrate, by Thermo Fisher Scientific (1 mentions) Barium nitrate, by Thermo Fisher Scientific (1 mentions) Cobalt chloride, by Maclin Biochemical Technology (1 mentions) Silver nitrate, by Thermo Fisher Scientific (1 mentions) D glucose, by Thermo Fisher Scientific (1 mentions) Boric acid, by Thermo Fisher Scientific (1 mentions) Nickel 2 nitrate hexahydrate, by Thermo Fisher Scientific (1 mentions) 2 2 bipyridine, by Thermo Fisher Scientific (1 mentions) Chitosan, by Thermo Fisher Scientific (1 mentions)

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Magnesium nitrate (7 citations)

8 protocols using magnesium nitrate hexahydrate

1

Synthesis of Metal Coordination Complexes

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Boric acid (H3BO3, 99.97%), urea (NH2CONH2, 99.3+%), d-(+)-glucose (99%), calcium nitrate tetrahydrate (Ca(NO3)2·4H2O, 99%), magnesium nitrate hexahydrate (Mg(NO3)2·6H2O, 98.0–102.0%), strontium nitrate (Sr(NO3)2, 99.0+%), barium nitrate (Ba(NO3)2, 99.95%), silver nitrate (AgNO3, 99.9+%), nickel(ii) nitrate hexahydrate (Ni(NO3)2·6H2O, 98%), 2,2′-bipyridine (99+%), lanthanum(iii) oxide (La2O3, 99.99%) were purchased from Alfa Aesar. Cobalt nitrate hexahydrate (Co(NO3)2·6H2O, 99%) was purchased from Aladdin and cobalt chloride (CoCl2·6H2O, 99.99%) from MACKLIN.
Other analytical grade solvents including ethanol, acetonitrile and chemicals such as potassium hydroxide, ammonia solution, hydrochloric acid and triethanolamine were supplied by Sinopharm.
Ri M., Choe K., Kim K., Gao Y, & Tang Z. (2018). C-doping into h-BN at low annealing temperature by alkaline earth metal borate for photoredox activity. RSC Advances, 8(73), 42109-42115.
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2

Synthesis of Chitosan-Coated Mg-Doped Hydroxyapatite

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The precursors used in order to obtain chitosan-coated magnesium-doped hydroxyapatite (Ca10−xMgx(PO4)6(OH)2; xMg = 0.1; 10 MgHApCh) via sol-gel method were: magnesium nitrate hexahydrate (Mg(NO3)2·6H2O; 99.97 %; Alpha Aesar, Kandel, Germany), calcium nitrate tetrahydrate (Ca(NO3)2∙4H2O, ≥99.0 %, Sigma Aldrich, St. Louis, MO, USA), and diammonium hydrogen phosphate ((NH4)2HPO4; ≥99.0 %, Sigma Aldrich, St. Louis, MO, USA). The ammonium hydroxide (NH4OH, 25% NH3 in H2O (T)), chitosan (C6H11NO4), and ethanol absolute (C2H5OH) purchased from Sigma Aldrich (St. Louis, MO, USA) were also used. Double distilled water was also used for the synthesis of 10 MgHApCh.
Predoi D., Ciobanu C.S., Iconaru S.L., Predoi S.A., Chifiriuc M.C., Raaen S., Badea M.L, & Rokosz K. (2022). Impact of Gamma Irradiation on the Properties of Magnesium-Doped Hydroxyapatite in Chitosan Matrix. Materials, 15(15), 5372.
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3

Synthesis of Mg-Doped Hydroxyapatite in Chitosan

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In order to obtain magnesium doped hydroxyapatite (Ca10−xMgx(PO4)6(OH)2; xMg = 0.1; (Ca + Mg)/p = 1.67) in chitosan matrix, calcium nitrate tetrahydrate (Ca(NO3)2∙4H2O, Sigma Aldrich, St. Louis, MO, USA, ≥99.0%), magnesium nitrate hexahydrate (Mg(NO3)2·6H2O, Alpha Aesar, Kandel, Germany, 99.97% purity), ammonium hydrogen phosphate ((NH4)2HPO4, Sigma Aldrich, St. Louis, MO, USA, ≥99.0%) ammonium hydroxide (NH4OH, Sigma Aldrich, St. Louis, MO, USA, 25% NH3 in H2O (T)), chitosan (Sigma Aldrich, St. Louis, MO, USA) and double distilled water were used as precursors without further purification.
Bita B., Stancu E., Stroe D., Dumitrache M., Ciobanu S.C., Iconaru S.L., Predoi D, & Groza A. (2022). The Effects of Electron Beam Irradiation on the Morphological and Physicochemical Properties of Magnesium-Doped Hydroxyapatite/Chitosan Composite Coatings. Polymers, 14(3), 582.
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4

Synthesis of Metal-Organic Frameworks

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All of the reagents were commercially available and used without any purification. Zinc nitrate hexahydrate (Zn(NO3)2·6H2O, 99.0%), zirconium tetrachloride (ZrCl4, 99.5%) and magnesium nitrate hexahydrate (Mg(NO3)2·6H2O, 99.0%) were obtained from Alfa Aesar. Dimethylformamide (DMF, 99.0%), methanol (CH3OH, 99.9%), acetone (CH3COCH3, 99.5%), ethanol (C2H5OH, 99.8%) and glacial acetic acid (CH3COOH, 99.99%) was purchased from Shanghai Chemical Reagent Co., Ltd (No. 52, Ningbo Road, Shanghai, China). 2,5-Dihydroxyterephthalic acid (99.0%), 2,5-dimethylterephthalic acid (99.0%) and 2-methylimidazole (99.0%) were obtained from Maclin. Carbon dioxide (CO2, 99.99%) was purchased from Shanghai Shenkai Co., Ltd. (No. 1769, Puxing Road, Shanghai, China).
Ma Z., Yuan T., Fan Y., Chen Y., Bai Y., Cheng Z, & Xu J. (2022). New Application of Quartz Crystal Microbalance: A Minimalist Strategy to Extract Adsorption Enthalpy. Nanomaterials, 12(22), 4035.
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5

Multi-step Analytical Reagent Protocol

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All the reagents were analytical-reagent grade. Ultrapure water (18 MΩ/SCF), prepared with a Milli-Q Reference Water Purification (Millipore, Madrid, Spain), was used throughout. All glassware and plastic containers were soaked in 50% nitric acid overnight and 20% Hydrochloric acid, also overnight, and rinsed three times with de-ionized water prior to use. Sodium bicarbonate (97%) was obtained from Scharlau (Barcelona, Spain), magnesium nitrate hexahydrate (98%), and magnesium oxide (98%) from Alfa Aesar (Kandel, Germany). Hydrochloric acid (35%) and hyperpure nitric acid (65%) were obtained from Panreac (Barcelona, Spain). Lanthanum chloride was supplied by Perkin Elmer (Madrid, Spain).
Digestive enzymes and bile salts were supplied by Sigma-Aldrich Co. (St. Louis, MO, USA). Working solutions of these enzymes were prepared immediately before use. Pepsin (3.2 g, P-7000 from porcine gastric mucosa) was dissolved in 20 mL of HCl (0.1 M). Pancreatin (0.6 g, P-3292 from porcine pancreas) and bile salts (3.9 g, B-8756 of porcine origin) were dissolved in 150 mL NaHCO3 (0.1 M).
Cámara-Martos F., Obregón-Cano S, & de Haro-Bailón A. (2022). Glucosinolates, Ca, Se Contents, and Bioaccessibility in Brassica rapa Vegetables Obtained by Organic and Conventional Cropping Systems. Foods, 11(3), 350.
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6

Magnesium-Doped Hydroxyapatite Fabrication

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The reagents that were used for the fabrication of magnesium-doped hydroxyapatite in a chitosan matrix (Ca10−xMgx(PO4)6(OH)2; xMg = 0, 0.08 and 0.3) by the sol-gel method were: calcium nitrate tetrahydrate (≥99.0%, Sigma Aldrich, St. Louis, MO, USA), diammonium hydrogen phosphate (≥99.0%, Sigma Aldrich, St. Louis, MO, USA) and magnesium nitrate hexahydrate (99.97%; Alpha Aesar, Kandel, Germany). In addition, other chemicals used in the fabrication process, such as chitosan, ethanol absolute and ammonium hydroxide, were procured from Sigma Aldrich (St. Louis, MO, USA). Si wafer (the substrate) was purchased from Siegert Wafer GmbH (Aachen, Germany).
Iconaru S.L., Ciobanu C.S., Predoi G., Rokosz K., Chifiriuc M.C., Bleotu C., Stanciu G., Hristu R., Raaen S., Raita S.M., Ghegoiu L., Badea M.L, & Predoi D. (2022). Biological and Physico-Chemical Properties of Composite Layers Based on Magnesium-Doped Hydroxyapatite in Chitosan Matrix. Micromachines, 13(10), 1574.
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7

Catalyst Precursor Synthesis

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For the synthesis of the catalyst precursors the following commercially available chemicals were used without further purification: Cobalt (II) nitrate hexahydrate (≥98% p.a., ACS, Carl Roth GmbH & Co. KG), iron (II) sulfate heptahydrate (≥99.5% p.a., ACS, Carl Roth GmbH & Co. KG), iron (III) nitrate nonahydrate (≥98% p.a., ACS, Alfa Aesar GmbH), magnesium nitrate hexahydrate (≥98%, ACS, Alfa Aesar GmbH), sodium carbonate (p.a., AppliChem GmbH) and sodium hydroxide (≥99%, VWR International BVBA).
Chen S., Jelic J., Rein D., Najafishirtari S., Schmidt F.P., Girgsdies F., Kang L., Wandzilak A., Rabe A., Doronkin D.E., Wang J., Friedel Ortega K., DeBeer S., Grunwaldt J.D., Schlögl R., Lunkenbein T., Studt F, & Behrens M. (2024). Highly loaded bimetallic iron-cobalt catalysts for hydrogen release from ammonia. Nature Communications, 15, 871.
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8

Trace Element Analysis in Food Samples

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All the reagents were analytical-reagent grade. Ultrapure water (18 M/SCF), prepared with a Milli-Q Reference Water Purification (Millipore, Madrid, Spain), was used throughout. All glassware and plastic containers were soaked in 50% nitric acid overnight and 20% hydrochloric acid, also overnight, and rinsed three times with de-ionized water prior to use. Hyperpure nitric acid (65%) and hydrochloric acid (35%) were obtained from Panreac (Barcelona, Spain). Lanthanum chloride was supplied by Perkin Elmer (Madrid, Spain). Sodium bicarbonate (97%) was obtained from Scharlau (Barcelona, Spain), magnesium nitrate hexahydrate (98%) and magnesium oxide (98%) from Alfa Aesar (Kandel, Germany) Digestive enzymes and bile salts were supplied by Sigma-Aldrich Co. (St. Louis, MO, USA). Working solutions of these enzymes were prepared immediately before use. Pepsin (3.2 g, P-7000 from porcine gastric mucosa) was dissolved in 20 ml of HCl (0.1 M). Pancreatin (0.6 g, P-3292 from porcine pancreas) and bile salts (3.9 g, B-8756 of porcine origin) were dissolved in 150 ml NaHCO3 (0.1 M).
Standard solutions for Se, Cr, Ni, Fe, Zn and Ca were prepared immediately before use by dilution with distilled deionized water from 1000 mg/ L standard solutions (Certipur -Merck, Darmstad, Germany).
Cámara-Martos F., Obregón-Cano S., Mesa-Plata O., Cartea-González M.E, & de Haro-Bailón A. (2021). Quantification and in vitro bioaccessibility of glucosinolates and trace elements in Brassicaceae leafy vegetables. Food chemistry, 339.
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