Hydrochloric acid (hcl)

Manufactured by Vetec

Sourced in Brazil

Hydrochloric acid is a clear, colorless, and highly corrosive liquid chemical compound. It is composed of hydrogen and chlorine, with the formula HCl. Hydrochloric acid is commonly used in various industrial and laboratory applications.

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Lab products found in correlation

Sodium hydroxide (naoh), by Vetec (14 mentions) Acetone, by Vetec (4 mentions) Acetic acid, by Vetec (4 mentions) Sodium carbonate, by Vetec (4 mentions) Glacial acetic acid, by Vetec (3 mentions) Glycerol, by Vetec (3 mentions) Ethanol, by Vetec (3 mentions) Potassium hydroxide, by Vetec (3 mentions) Diethyl ether, by Vetec (3 mentions) Ammonium hydroxide, by Vetec (3 mentions) Chloroform, by Vetec (3 mentions) Sulfuric acid, by Vetec (3 mentions) Nicl 2 6h 2 o, by Vetec (2 mentions) 1 2 4 benzenetricarboxylic anhydride trimellitic anhydride ta, by Merck Group (2 mentions) Pyridine py, by Vetec (2 mentions) Sodium thiosulfate, by Vetec (2 mentions) Potassium biphthalate, by Labsynth (2 mentions) Potassium dichromate, by Labsynth (2 mentions) Butylhyldroxytoluene, by Labsynth (2 mentions) Buthylhydroxyanisole, by Labsynth (2 mentions)

31 protocols using hydrochloric acid (hcl)

Fly Ash Adsorption of Parabens

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Fly ash was
supplied by Eneva-Energia Pecém, located at São Gonçalo
do Amarante-Ceara, Brazil. The reagents HCl and NaOH and the surfactant
cetyltrimethylammonium bromide (CTAB) were obtained from Vetec, Brazil.
For adsorption tests, individual high-purity standards (≥99%)
of methylparaben (MP), ethylparaben (EP), propylparaben (PP), and
butylparaben (BP) were purchased from Sigma-Aldrich. Their physical–chemical
structures and properties are summarized in Table 1. For chromatographic analysis, methanol
(PanReac AppliChem ITW Reagents, high-performance liquid chromatography
(HPLC) grade) was used. Acetic acid used in the mobile phase was obtained
from Vetec, and NaCl, used in the determination of the point of zero
charge, was obtained from Sigma-Aldrich.

de Oliveira F.F., Moura K.O., Costa L.S., Vidal C.B., Loiola A.R, & do Nascimento R.F. (2020). Reactive Adsorption of Parabens on Synthesized Micro- and Mesoporous Silica from Coal Fly Ash: pH Effect on the Modification Process. ACS Omega, 5(7), 3346-3357.

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Prussian Blue Staining of Nanoparticles

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Cells were seeded to 24 well culture plates at a seeding density of 10,000 cells/ well and incubated overnight for cell attachment. The medium was then replaced with opti-MEM medium containing 100 ug/mL of nCP:Fe and incubated for 12 hours. Medium was removed and cells were cultured in DMEM complete medium for 6 hours. Cells were then washed with PBS and fixed using 4% paraformaldehyde (Merck Co, India). Cells were then washed and treated with a mixture of 5% potassium ferrocyanide (Sigma-Aldrich Co, USA) and 5% HCl (VeTEC, India) for 10 minutes. Cells were washed and stained with nuclear fast red (Merck- Millipore, USA) for 5 min. Dehydration followed by mounting of coverslips was done. The cells were examined under optical microscope (Olympus, BX5).

Ashokan A., Somasundaram V.H., Gowd G.S., Anna I.M., Malarvizhi G.L., Sridharan B., Jobanputra R.B., Peethambaran R., Unni A.K., Nair S, & Koyakutty M. (2017). Biomineral Nano-Theranostic agent for Magnetic Resonance Image Guided, Augmented Radiofrequency Ablation of Liver Tumor. Scientific Reports, 7, 14481.

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Arsenic Speciation Analysis Protocol

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All reagents used in the experiments were of analytical grade and used without further purification. The reagents used were weighed on a Shimadzu analytical scale, model AUY220, to prepare the solutions. The solutions were prepared using ultrapure water (resistivity 18.0 MΩ cm) obtained by the Thermo Scientific Barnstead™ Nanopure™ system (Waltham, MA, USA).
The reagents Na₂HAsO₄·7H₂O (CAS: 10048-95-0) and NaAsO₂ (CAS: 7784-46-5) were provided by Sigma-Aldrich (St. Louis, MO, USA), and the reagents NaOH (CAS: 1310-73-2), HNO₃ (CAS: 7697-37-2), CH₃COOH (CAS: 64-19-7), and HCl (CAS: 7647-01-0) were purchased from Vetec (Brazil). Rhodium (Ra) (CAS: 7440-14-4) and multi-elementary solution were obtained from PerkinElmer (Waltham, MA, USA).

Faria M.C., Hott R.D., dos Santos M.J., Santos M.S., Andrade T.G., Bomfeti C.A., Rocha B.A., Barbosa F J.r, & Rodrigues J.L. (2023). Arsenic in Mining Areas: Environmental Contamination Routes. International Journal of Environmental Research and Public Health, 20(5), 4291.

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Carbon Synthesis via Glycerol Conversion

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Carbon was produced utilizing glycerol 99% from Vetec (São Paulo, São Paulo), sulfuric acid >98% from LabSynth (Diadema, São Paulo) and acetone from Cosmoquimica Indústria e Comércio (Barueri, São Paulo). Characterization techniques used KBr 99.5% from Sigma-Aldrich (São Paulo, São Paulo), NaOH 99% from Vetec (São Paulo, São Paulo), NaHCO₃ 99.5% from Sigma-Aldrich (São Paulo, São Paulo), HCl 36.5–38.0% from Vetec (São Paulo, São Paulo). Catalytic tests were performed with D(-)fructose >99,9% from Sigma Aldrich (São Paulo, São Paulo) and Dimethylsulfoxide >99,9% from Synth (Diadema, São Paulo). All chemicals were used as received and without any treatment.

Tudino T.C., Nunes R.S., Mandelli D, & Carvalho W.A. (2020). Influence of Dimethylsulfoxide and Dioxygen in the Fructose Conversion to 5-Hydroxymethylfurfural Mediated by Glycerol's Acidic Carbon. Frontiers in Chemistry, 8, 263.

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Synthesis of Titanium-Niobium Oxide

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The tetraethylorthosilicate (TEOS, 98%), titanium (IV) butoxide (97%) and niobium (V) pentachloride (99%) were purchased from Sigma-Aldrich (Saint Louis, MO, USA). Ethanol (99.8%), HCl (37% v/v) and HNO₃ (95% v/v) were purchased from Vetec (Duque de Caxias, RJ, Brazil). Ultra-pure Milli-Q water was used (resistivity > 18.2 MΩ cm⁻¹, 25 °C, Millipore Milli-Q purification system, Billerica, MA, USA).

da Fonseca B.T., D’Elia E., Siqueira Júnior J.M., de Oliveira S.M., dos Santos Castro K.L, & Ribeiro E.S. (2021). Study of the characteristics and properties of the SiO2/TiO2/Nb2O5 material obtained by the sol–gel process. Scientific Reports, 11, 1106.

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Chitosan-Based Metal-Organic Conjugate Synthesis

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Chitosan (medium molecular weight, cat. no. 448877), pyridine-2-carbaldehyde, CuSO4•5H2O, and sodium chloroacetate (98%) were purchased from Sigma-Aldrich. K2Cr2O7, monochloroacetic acid (99%), CH3COONa•3H2O, Na2CO3, anhydrous CaCl2, NaH2PO4, Na2HPO4, and ethylenediaminetetraacetic acid (EDTA) were purchased from Synth (Brazil). Glycine was purchased from Isofar (Brazil). Glacial acetic acid (99.5%) was purchased from Neon (Brazil). Ethyl alcohol (99.8%) was purchased from Dinâmica (Brazil). HCl (37 wt.% in H2O) was purchased from Vetec (Brazil). Filter paper (quantitative, black ribbon, C-41, 12.5 cm diameter, 0.01% ash content, and grammage of 85 g m -2 ) was purchased from Unifil (Brazil).
The degree of acetylation (DA) of the chitosan was determined in a previous study of our research group (Goncalves et al., 2018) (link), using quantitative solid-state 13 C nuclear magnetic resonance (SS 13 C NMR) spectroscopy. The estimated DA value of the chitosan was 33 ± 2%.

Jorge Gonçalves F., Alves Gurgel L.V., Catone Soares L., Simões Teodoro F., Dias Ferreira G.M., Coelho Y.L., Mendes da Silva L.H., Prim D, & Gil L.F. (2021). Application of pyridine-modified chitosan derivative for simultaneous adsorption of Cu(II) and oxyanions of Cr(VI) from aqueous solution. Journal of environmental management, 282.

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Preparation and Modification of Sugarcane Biomass

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CoCl 2 •6H 2 O, CuSO 4 •5H 2 O, monochlroacetic acid (99%), and isopropanol were purchased from Synth (Brazil). Phthalic anhydride (99%) (cat no. 125733) was purchased from Sigma-Aldrich (Brazil). NiCl 2 •6H 2 O, glacial acetic acid (99.5%), NaOH, HCl (37% w/w), acetone, and pyridine (Py) were purchased from Vetec (Brazil). Quantitative filter papers (blue ribbon, JP-41, cat no. 3509-1, 12.5 cm diameter, ash content of 0.00009 g, and grammage of 80 g/cm 2 ) were purchased from JProlab (Brazil). Py was refluxed in a 2 L round-bottomed flask with NaOH pellets for 12 h, distilled, and stored in flat-bottomed flasks containing NaOH pellets before use. All metal-ion solutions were prepared using deionized water (Millipore, model Milli-Q ® Simplicity ® ). SB stalks were collected at Ouro Preto, Minas Gerais, Brazil. SB stalks were prepared for chem-ical modification following the methodology proposed by Ramos et al. (2015) .

Ramos S.N.d.C., Xavier A.L.P., Teodoro F.S., Gil L.F, & Gurgel L.V.A. (2016). Removal of cobalt(II), copper(II), and nickel(II) ions from aqueous solutions using phthalate-functionalized sugarcane bagasse: Mono- and multicomponent adsorption in batch mode. Industrial Crops & Products., 79.

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Adsorption Studies of Metal Ions

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CoCl 2 Á6H 2 O, CuSO 4 Á5H 2 O, monochloroacetic acid (99%), CH 3 -COONaÁ3H 2 O and isopropanol were purchased from Synth (Brazil). 1,2,4-Benzenetricarboxylic anhydride (Trimellitic anhydride, TA) (97%) (cat no. 552-30-7), Whatman Ò cellulose chromatography papers (20 Â 20 cm) (cat no. WHA3001861) and 3 Å molecular sieve (cat no. 69839) were purchased from Sigma-Aldrich (Brazil). NiCl 2 Á6H 2 O, glacial acetic acid (99.5%), NaOH, HCl (37% w/w), acetone, N,N-dimethylacetamide (DMA) and pyridine (Py) were purchased from Vetec (Brazil). Quantitative filter paper (black ribbon, JP-41, cat no. 3509-1, 12.5 cm diameter, ash content of 0.00009 g and grammage of 80 g cm À2 ) was purchased from JProlab (Brazil). Py was refluxed in a 2 L round-bottom flask with NaOH pellets for 12 h, distilled and stored in flat-bottom flasks containing NaOH pellets before use. Molecular sieve was previously activated in an oven at 150 °C for 2 h. DMA was stored with molecular sieve (3 Å) before use. All metal ion solutions used in the adsorption studies were buffered. Buffers consisting of 0.05 mol L À1 CH 2 ClCOOH/CH 2 ClCOONa (pH from 2.0 to 3.5) and 0.05 mol L À1 CH 3 COOH/CH 3 COONa (pH from 4.0 to 5.5) were prepared in deionized water (Millipore, model Milli-Q Ò ).

Teodoro F.S., Ramos S.N.D.C., Elias M.M.C., Mageste A.B., Ferreira G.M.D., da Silva L.H.M., Gil L.F, & Gurgel L.V.A. (2016). Synthesis and application of a new carboxylated cellulose derivative. Part I: Removal of Co(2+), Cu(2+) and Ni(2+) from monocomponent spiked aqueous solution. Journal of colloid and interface science, 483.

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Synthesis and Characterization of Metal-Organic Frameworks

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CoCl 2 •6H 2 O, CuSO 4 •5H 2 O, CH 3 COONa•3H 2 O, monochloroacetic acid (99%), and isopropanol were purchased from Synth (Brazil). 1,2,4-Benzenetricarboxylic anhydride (trimellitic anhydride, TA) (97%) (cat no. 552-30-7) and 3 Å molecular sieve (cat no. 208582) were purchased from Sigma-Aldrich (Brazil). NiCl 2 •6H 2 O, glacial acetic acid (99.5%), NaOH, HCl (37% w/w), acetone, N,Ndimetylacetamide (DMA), and pyridine (Py) were purchased from Vetec (Brazil) . Quantitative filter papers (blue ribbon, JP 41, cat no. 3509-1, 12.5 cm diameter, ash content of 0.00009 g, and grammage of 80 g/cm 2 ) were purchased from JProlab (Brazil). Before use, DMA was stored with molecular sieves (3 Å) that had been previously activated in an oven at 150 • C. Py was refluxed in a round-bottomed flask with NaOH pellets for 12 h and distilled before use.

Ramos S.N.d.C., Xavier A.L.P., Teodoro F.S., Elias M.M.C., Gonçalves F.J., Gil L.F., de Freitas R.P, & Gurgel L.V.A. (2015). Modeling mono- and multi-component adsorption of cobalt(II), copper(II), and nickel(II) metal ions from aqueous solution onto a new carboxylated sugarcane bagasse. Part I: Batch adsorption study. Industrial Crops & Products., 74.

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Characterization of Bullfrog Oil Properties

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Bullfrog oil was provided by Asmarana Produtos Naturais (Natal, Brazil). Sodium hydroxide (NaOH), dimethyl sulfoxide (DMSO), potassium hydroxide, diethyl ether, hydrochloric acid (HCl), Tween^® 20, sodium thiosulfate, and sodium carbonate were from VETEC (Rio de Janeiro, Brazil). Miglyol^® 812 was a gift from Sasol (Witen, Germany). Butylhyldroxytoluene (BHT), buthylhydroxyanisole, potassium biphthalate, potassium dichromate, and Wijs solution were purchased from Labsynth (São Paulo, Brazil). Acetic acid, ethanol P.A, sodium bicarbonate, potassium iodide, starch, and chloroform were from Isofar (Rio de Janeiro, Brazil). Sucralose, Tutti-frutti flavoring and Acesulfame K were purchased from Valdequímica (São Paulo, Brazil). Xanthan gum, sodium benzoate and propylparaben were from ViaFarma (São Paulo, Brazil). Phenolphthalein was provided from Biotec Chemicals (Londrina, Brazil). Mucin Type II (Mucin from porcine stomach) and Span^® 80 were from Sigma-Aldrich (São Paulo, Brazil).

Moreira-Oliveira S.S., Amaral-Machado L., de Oliveira W.N., Alencar É.N., Zatta K.C., de Souza L.B., Medeiros A.D., Chaves G.M, & Egito E.S. (2018). Buccal Bullfrog (Rana catesbeiana Shaw) Oil Emulsion: A Mucoadhesive System Intended for Treatment of Oral Candidiasis. Pharmaceutics, 10(4), 257.

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