Poly(methyl methacrylate)s of Mw: 350,000 and 996,000 g/mol were purchased from Sigma Aldrich (St. Louis, MO, USA). The waste Poly(methyl methacrylate) (Mw: 117,000 g/mol) was supplied from the landfill sites by Remondis (Tarnowskie Góry, Poland). The other reagents and standards such as: Diethylene glycol diethyl ether (Acros Organics), diethylene glycol methyl ether (Acros Organics), dimethyl sulfoxide (Acros Organics), deuterated dimethyl sulfoxide (Acros Organics), potassium hydroxide (Avantor, Poland), acetone (Chempur, Piekary Śląskie, Poland), potassium hydroxide (Avantor, Poland), sodium hydroxide (Avantor, Poland), hydrochloric acid ca. 35–37% (Chempur, Piekary Śląskie, Poland), nitric acid 65% (Suprapur, Merck, Germany), zinc nitrate (Avantor, Poland) and methanol (Acros Organics) were purchased and used without further purification. Zinc standard solution of 1 mg/mL was supplied by Merck. Deionized water was prepared using a Millipore Elix 10 system.
Potassium hydroxide
Manufactured by Avantor
Sourced in Poland, United States, Germany, United Kingdom, Belgium
Potassium hydroxide is a chemical compound that is commonly used in various laboratory and industrial applications. It is a white, crystalline solid with a high pH and strong basic properties. Potassium hydroxide is a powerful base that can be used for neutralization reactions, pH adjustment, and as a reagent in various chemical processes.
Automatically generated - may contain errors
Lab products found in correlation
Chloroform, by Avantor (9 mentions)
Methanol, by Avantor (9 mentions)
Hydrochloric acid (hcl), by Avantor (8 mentions)
Sodium hydroxide (naoh), by Avantor (7 mentions)
Formic acid, by Thermo Fisher Scientific (6 mentions)
Methanol, by Thermo Fisher Scientific (5 mentions)
Sodium chloride (nacl), by Avantor (5 mentions)
Acetone, by Avantor (4 mentions)
Ethanol, by Avantor (3 mentions)
Acetonitrile, by Avantor (3 mentions)
Sodium bicarbonate, by Avantor (3 mentions)
Hexane, by Avantor (3 mentions)
Perchloric acid, by Avantor (3 mentions)
Oxalic acid, by Chempur (2 mentions)
Cyclohexane, by Chempur (2 mentions)
Hydrochloric acid (hcl), by EKF Diagnostics (2 mentions)
Activated carbon, by Chempur (2 mentions)
Ascorbic acid, by Chempur (2 mentions)
Ammonium molybdate tetrahydrate, by Chempur (2 mentions)
Ammonium metavanadate, by Chempur (2 mentions)
46 protocols using potassium hydroxide
1
Recycling Waste PMMA Using Solvents
2
Activated Carbon from Waste Chestnuts
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In this work, waste chestnuts were used to obtain activated carbon as a potential material for energy storage. This type of biomass was selected because a horse chestnut (Aesculus hippocastanum L.), with inedible, large seeds (chestnuts), is a popular tree in the Gdańsk urban area.
Hydrochloric acid and potassium hydroxide (Avantor Performance Materials Poland S.A., Gliwice, Poland) were of analytical grade and used as received. Electrolyte for electrochemical studies (6 M KOH) was prepared using deionized water. Polytetrafluoroethylene (PTFE) dispersion in water (60 wt%) was obtained from Sigma Aldrich (Merck KGaA, Darmstadt, Germany).
Hydrochloric acid and potassium hydroxide (Avantor Performance Materials Poland S.A., Gliwice, Poland) were of analytical grade and used as received. Electrolyte for electrochemical studies (6 M KOH) was prepared using deionized water. Polytetrafluoroethylene (PTFE) dispersion in water (60 wt%) was obtained from Sigma Aldrich (Merck KGaA, Darmstadt, Germany).
3
Synthesis and Characterization of Quaternary Ammonium Compounds
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Myristyltrimethylammonium bromide 99% from Sigma-Aldrich, Saint Louis, MO, USA. Stearyltrimethylammonium chloride (80% isopropanolic solution) and behenyltrimethylammonium chloride (80% isopropanolic solution) were purchased from KCI Limited, Chungnam, South Korea. Arquad 2HT (di(hydrogenated tallow)dimethylammonium chloride, 75% isopropanolic solution), Arquad C-35 (cocotrimethylammonium chloride, 35% aqueous solution) and didecyldimethylammonium chloride (40% aqueous solution) were obtained from Akzo-Nobel, Amsterdam, The Netherlands. Dioctyldimethylammonium chloride (99%) was purchased from CHEMOS GmbH, Altdorf, Germany. Cetyltrimethylammonium chloride (50% aqueous solution) was obtained from Stockmeier Chemie, Poznan, Poland. Iodosulfuron-methyl sodium salt (97%) was from Pestinova, Jaworzno, Poland. All solvents (methanol, DMSO, acetonitrile, acetone, isopropanol, ethyl acetate, chloroform, toluene, hexane) and potassium hydroxide were obtained from Avantor, Gliwice, Poland. Deionized water with conductivity <0.1 µS·cm−1, was obtained from demineralizer Hydrolab HLP Smart 1000, Straszyn, Poland. All tetraalkylammonium halides were thoroughly dried at 50 °C for 48 h under reduced pressure (1–2 mbar) prior to the syntheses.
4
Comprehensive Chemical Compound Analysis
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Acetone, calcium carbonate, sodium carbonate, ethanol, potassium persulphate, and sodium acetate were purchased from IDALIA (Radom, Poland), Folin-Ciocalteu’s phenol reagent, Trolox, gallic acid, diphenyl-2-picrylhydrazyl (DPPH), azino-bis-3-ethyl-benzthiazoline-6-sulphonic acid (ABTS), ferric reducing antioxidant power (FRAP), and tripyridyl-S-triazine (TPTZ) from Archem (Łany, Poland), acetic acid, activated carbon, oxalic acid, ascorbic acid, sodium bicarbonate, 65% nitric acid, ammonium molybdate tetrahydrate, ammonium metavanadate, magnesium nitrate, barium chloride dihydrate, cyclohexane, sodium sulphate from CHEMPUR (Piekary Śląskie, Poland), 2, 6-2, 6-dichlorophenolindophenol sodium salt hydrate from Acros Organics (Argenta; Poznań, Poland), hydrochloric acid (38%), chloroform and methanol from Stanlab (Lublin, Poland), standard solutions and detergent Tween TM 80 from Merck (Darmstadt, Germany), 2-undecanone and BF3/MeOH from Sigma-Aldrich (Saint Louis, MO, USA), hexane and sodium bicarbonate from UQF (Wrocław, Poland), n-hexane (99%) from POCH Basic (Gliwice, Poland), helium from Air Products (Warsaw, Poland), potassium hydroxide from Avantor (Gliwice, Poland). The reagents were of analytical grade.
5
Synthesis and Characterization of Metal Complexes
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All the reagents used in this work were of analytical grade purity and used without further purification. The N,N'-bis(salicylidene)ethylenediamine (L) was bought from Sigma-Aldrich (Poznan, Poland). The pattern metal ions (Pd2+, Ag+, Pt2+, and Au3+), nitric acid, ammonia, potassium hydroxide, chloroform, and methanol were purchased from Avantor (Gliwice, Poland).
The structure of N,N'-bis (salicylidene)ethylenediamine is shown inFigure 1 .
The structure of N,N'-bis (salicylidene)ethylenediamine is shown in
6
Analytical Protocol for Carotenoid Extraction
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The organic solvents (ethyl acetate, methanol, acetonitrile, acetone, hexane isomers mix, diethyl ether, water) were of HPLC grade and purchased from Rathburn Chemicals Ltd. (Scotland) or Chromasolv (USA). The ammonium acetate p.a. was supplied by Avantor Performance Materials (Poland) and dissolved in HPLC grade water. For saponification and pigment partitioning, potassium hydroxide p.a. obtained from Avantor Performance Materials was used as well as rectified 95 % ethanol and extraction petroleum purchased from Polmos (Poland) and Avantor Performance Materials, respectively. Silica gel (Silica gel 60, pore size 0.040–0.063 mm (230–400 mesh ASTM)) purchased from Merck (Germany) were alkalised by hydrogen carbonate p.a. and washed by deionised water.
7
Cholesterol and Oxysterols Analytical Protocol
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Cholesterol and COP analytical standards, 5α-cholestane (HPLC grade), BSTFA + 1% TMCS (N,O-Bis(trimethylsilyl)trifluoroacetamide with 1% of trimethylchlorosilane, for GC derivatization) and pyridine (HPLC grade) were purchased from Sigma Aldrich Corp., Poznan, Poland. Methanol (HPLC grade), ethanol (96%, analytical grade), hexane (HPLC grade), chloroform (analytical grade), potassium hydroxide (analytical grade) and BHT (butylated hydroxytoluene, analytical grade) were bought in Avantor Performance Materials Poland S.A., Gliwice, Poland. Nitrogen (purity: ≥99.999%) was provided by Multax S.C., Stare Babice, Poland. Helium (purity: ≥99.9999%) was bought from Air Products and Chemicals, Inc., Warsaw, Poland.
8
Aqueous Ethanolic Extracts as Antioxidant Agents
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Aqueous ethanolic extracts from plant materials, such as dried leaves of lemon balm (Melissa officinalis L.), hyssop (Hyssopus officinalis L.), and nettle (Urtica dioica L.), were used as fortification agents, were prepared in advance according to Kozłowska et al. [27 (link)]. Ingredients for making shortbread cookies were purchased in a local market (Warsaw, Poland). These were palm fat “Akofect LT M53” (AarhusKarlshamn, Malmo, Sweden), cold-pressed walnut oil “ULEI” (PROMET-T SA, Moldova), wheat flour type 480 “Szymanowska” (Polskie Młyny, Warsaw, Poland), sugar (Pfeifer & Langen Marketing, Poznań, Poland), and eggs. All the solvents (ethanol, methanol, diethyl ether, chloroform, n-hexane) and reagents (acetic acid, potassium hydroxide, potassium iodide, potassium chloride, sodium thiosulfate, starch soluble, phenolphthalein, anhydrous magnesium sulphate) used were analytical grade and were purchased from Avantor Performance Materials Poland (Gliwice, Poland). Butylated hydroxyanisole (BHA), 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Trolox ((±)-6-hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid) were obtained from Sigma-Aldrich (St. Louis, MO, USA). A certified fatty acids methyl ester (FAME) reference standard mixture (37 fatty acids from C4 to C24) was from Supelco (Bellefonte, PA, USA).
9
Synthesis and Characterization of Polymer Materials
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Naphthalene, p-methoxyphenol, triethylbenzylammonium chloride (TEBACl), methacryloyl chloride, paraformaldehyde, ethylene chloride, chlorosulfonic acid, methylene chloride, methyl methacrylate, triethylamine (TEA), and 2-hydroxyethyl methacrylate were purchased from Sigma-Aldrich (Germany). Sulfuric acid, sodium bicarbonate, sodium chloride, tin(II) chloride hydrate, hexane, chloroform, hydrochloric acid, potassium hydroxide, sodium hydroxide, acetic acid, styrene, thiourea, ethanol, benzene, ammonium chloride, magnesium sulfate, cyclohexane, dichloromethane (DCM), methanol (MeOH), acetone, acetonitrile (ACN), and tetrahydrofuran (THF) were obtained from Avantor Performance Materials (Gliwice, Poland). α,α’-Azoiso-bis-butyronitrile (AIBN) was purchased from Merck (Darmstadt, Germany). The 4,4′-thiobisbenzenethiol (TBT) was synthesized at the Department of Polymer Chemistry (Lublin, Poland). All chemicals were used as received.
10
Comprehensive Phytochemical Analysis Protocol
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Acetone, calcium carbonate, ethanol, potassium persulphate, sodium acetate, and sodium carbonate were purchased from IDALIA (Radom, Poland); azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS), diphenyl-2-picrylhydrazyl (DPPH), ferric-reducing antioxidant power (FRAP), Folin–Ciocalteu's phenol reagent, gallic acid, tripyridyl-S-triazine (TPTZ), and Trolox were purchased from Archem (Łany, Poland); acetic acid, activated carbon, ammonium metavanadate, ammonium molybdate tetrahydrate, ascorbic acid, barium chloride dihydrate, cyclohexane, magnesium nitrate, 65% nitric acid, oxalic acid, sodium bicarbonate, and sodium sulfate were purchased from CHEMPUR (Piekary Śląskie, Poland); 2,6-dichlorophenolindophenol sodium salt hydrate was purchased from ACROS ORGANICS (ARGENTA; Poznań, Poland); chloroform, hydrochloric acid (38%), and methanol were purchased from STANLAB (Lublin, Poland); standard solutions and Tween TM 80 were purchased from Merck (Darmnstadt, Germany); 2-undecanone and BF3/MeOH were purchased from Sigma-Aldrich (Saint Louis, MO, USA); hexane and sodium bicarbonate were purchased from UQF (Wrocław, Poland); n-hexane (99%) was purchased from POCH Basic (Gliwice, Poland); helium was purchased from Air Products (Warsaw, Poland); and potassium hydroxide was purchased from Avantor (Gliwice, Poland).
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