Ammonium hydroxide solution

Manufactured by Honeywell

Sourced in United States, Germany

Ammonium hydroxide solution is a clear, colorless liquid chemical compound consisting of ammonia (NH3) dissolved in water. It has a pungent odor and serves as a common laboratory reagent. The solution can be used as a pH adjuster and a source of ammonium ions for various analytical and synthetic applications.

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Lab products found in correlation

5 protocols using ammonium hydroxide solution

Electrochemical Material Synthesis Protocols

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The following chemicals were used for material
preparation and electrochemical analysis: graphite (Timrex KS44; Imreys,
Bodio, Switzerland), carbon black (Vulcan carbon XC72R; Cabot Corp.,
Boston, Massachusetts), hydrazine hydrate (reagent grade; Sigma-Aldrich,
Darmstadt, Germany), cobalt(II) nitrate hexahydrate (99.999% trace
metals basis; Sigma-Aldrich, Darmstadt, Germany), zinc(II) nitrate
hexahydrate (>99%; Honeywell Fluka, Charlotte, North Carolina),
cerium(III)
nitrate hexahydrate (99.5%; Alfa Aesar, Haverhill, Massachusetts),
manganese(II) nitrate tetrahydrate (98%; Alfa Aesar, Haverhill, Massachusetts),
ammonium hydroxide solution (30–33%; Honeywell, Charlotte,
North Carolina), 2-propanol (≥99.9%, UV/IR-grade; Carl Roth,
Karlsruhe, Germany), potassium hydroxide (1.0 M Fixanal 1 L Ampoule;
Merck, Darmstadt, Germany), ethanol (99.9% p.a.; Carl Roth, Karlsruhe,
Germany), Nafion solution (5 wt % in water; Quintech, Göppingen,
Germany), alumina suspension (0.05 μm; MasterPrep Bühler,
Lake Bluff, Illinois), and Pt/C (30 wt % on Vulcan; De Nora North
America, New Jersey). Ultrapure water (∼18 MΩ cm) was
used in all experiments.

Wolf S., Roschger M., Genorio B., Garstenauer D, & Hacker V. (2023). Mixed Transition-Metal Oxides on Reduced Graphene Oxide as a Selective Catalyst for Alkaline Oxygen Reduction. ACS Omega, 8(12), 11536-11543.

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Graphene Oxide Synthesis from Graphite

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Graphite (Timrex KS44), as the precursor for graphene oxide (GO) synthesis, was obtained from Imerys and carbon black (Vulcan XC72R) from Cabot Corp. was used. Hydrazine hydrate (N₂H₄·H₂O, reagent grade), potassium hydroxide (KOH, 1.0 M Fixanal 1 L Ampoule) and cobalt(ii) nitrate hexahydrate (Co(NO₃)₂·6H₂O, 99.999% trace metals basis) were supplied by Sigma Aldrich. Cerium(iii) nitrate hexahydrate (Ce(NO₃)₃·6H₂O, 99.5%) and manganese(ii) nitrate tetrahydrate (Mn(NO₃)₂·4H₂O, 98%) were delivered by Alfa Aesar. Ammonium hydroxide solution (30–33% NH₃ in H₂O) from Honeywell was used. Isopropyl alcohol (2-propanol, ≥99.9%, UV/IR-grade) and ethanol (EtOH, 99.9% p.a.) were purchased from Carl Roth. Nafion® solution (5 wt% in H₂O) and a commercial carbon black supported platinum catalyst (Pt/C, 20 wt% on Vulcan) were supplied by Quintech. An alumina suspension (Al₂O₃, 0.05 μm particle size) from MasterPrep® Bühler served as RDE polishing agent. The ultrapure water used throughout all experiments was purified with a Barnstead NANOpureWater Purification system to the desired resistivity of approx. 18 MΩ cm.

Wolf S., Roschger M., Genorio B., Garstenauer D., Radić J, & Hacker V. (2022). Ce-modified Co–Mn oxide spinel on reduced graphene oxide and carbon black as ethanol tolerant oxygen reduction electrocatalyst in alkaline media. RSC Advances, 12(55), 35966-35976.

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Synthesis of Silica-PVP Nanocomposites

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Poly (vinyl pyrrolidone) (PVP) (MW: 1,300,000 g mol⁻¹) and tetraethyl orthosilicate (TEOS) reagents were purchased from Sigma Aldrich. Ammonium hydroxide solution (30–33% NH₃ in H₂O) and ethanol (99.8% ACS) were purchased from Honeywell.

Passaro J., Russo P., Bifulco A., De Martino M.T., Granata V., Vitolo B., Iannace G., Vecchione A., Marulo F, & Branda F. (2019). Water Resistant Self-Extinguishing Low Frequency Soundproofing Polyvinylpyrrolidone Based Electrospun Blankets. Polymers, 11(7), 1205.

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Analytical Standards for Food Analysis

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Folin−Ciocalteu reagent was purchased from Kemika (Zagreb, Croatia); 2,2-diphenyl-1-picrylhydrazyl, catechin (CAS: 154–23–4, ≥99.0%), epicatechin (CAS: 490–46–0; ≥98%), gallic acid (CAS: 149–91–7, ≥97.5), p-cumaric acid (CAS: 501–98–4, ≥98.0%), phloretin (CAS: 60–82–2, ≥99.0%), phloridzin (CAS: 60–81–1, ≥98%), chlorogenic acid (CAS: 327–97–9, ≥95%) and caffeic acid (CAS: 331–39–5, ≥98.0%) were obtained from Sigma Chemical Co. (St. Louis, MO, USA). Methanol (HPLC grade) and orthophosphoric acid (85%) were obtained from Panareac (Barcelona, Spain). Certified standard of patulin and MycoSep^® 228 AflaPat columns were obtained from Romer Labs Biopure (Romer Labs, Tulln, Austria). Certified pesticide standard solutions were obtained from CPAchem (CPAchem, Stara Zagora, Bulgaria). LC-MS and HPLC grade acetonitrile was purchased from J.T. Baker (J.T. Baker, Deventer, The Netherlands), while LC-MS grade formic acid and LC-MS ammonium formate were produced by Sigma–Aldrich (Sigma-Aldrich, St. Louis, MO, USA). Ammonium hydroxide solution, ≥25% NH₃ in H₂O, was purchased from Honeywell (Offenbach, Germany). Nylon syringe filters, 0.2 µm pore size and 13 mm diameter, were obtained from Agilent (Santa Clara, CA, USA). Ultrapure water was generated by Niro VV system (Nirosta d.o.o., Osijek, Croatia).

Lončarić A., Šarkanj B., Gotal A.M., Kovač M., Nevistić A., Fruk G., Skendrović Babojelić M., Babić J., Miličević B, & Kovač T. (2021). Penicillium expansum Impact and Patulin Accumulation on Conventional and Traditional Apple Cultivars. Toxins, 13(10), 703.

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Quantification of Periodontal Drug Release

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Atridox (doxycycline hyclate, 10%) was manufactured by Tolmar, Inc. (Fort Collins, CO). Arestin (minocycline HCl, 1 mg) was manufactured by Valeant Pharmaceuticals (Bridgewater, NJ). PerioChip (Chlorhexidine gluconate, 2.5 mg) was manufactured by Drexel Pharma Technologies Ltd (Yokneam, Israel). These periodontal drug products were purchased from their respective vendors via a dental clinic. Doxycycline hyclate USP and minocycline HCl USP were purchased from PCCA (Houston, TX). Chlorhexidine was purchased from Sigma-Aldrich (St. Louis, MO). Ammonium hydroxide solution (30%–33%) was purchased from Honeywell (Muskegon, MI). Triethylamine and trypsin (from porcine pancreas, lyophilized powder, 1,000–2,000 BAEE units/mg solid) were purchased from Sigma-Aldrich (St. Louis, MO). Sodium phosphate monobasic was from Acros Organics (Janssen Pharmaceuticalaan, Geel, Belgium). Tetrabutylammonium hydrogen sulfate was from TCI America (Portland, OR). Sodium chloride, potassium phosphate monobasic, ethylene diamine tetraacetic acid, and o-phosphoric acid were purchased from Fisher Scientific (Fair Lawn, NJ). Acetonitrile (HPLC grade) was from Pharmaco-AAPER (Shelbyville, KY). Materials were used as received.

Wanasathop A., Murawsky M, & Kevin Li S. (2022). Modification of Small Dissolution Chamber System for Long-acting Periodontal Drug Product Evaluation. International journal of pharmaceutics, 618, 121646.

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