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Sodium hydroxide anhydrous pellets

Manufactured by Merck Group
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Sodium hydroxide anhydrous pellets are a commonly used laboratory reagent. They are a white, solid, and crystalline form of sodium hydroxide. The core function of these pellets is to serve as a strong base for various chemical reactions and analyses performed in laboratory settings.

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Lab products found in correlation

Sodium silicate solution, by Merck Group (2 mentions) Acetic acid, by Thermo Fisher Scientific (2 mentions) Methanol, by Merck Group (1 mentions) Direct q 3 system, by Merck Group (1 mentions) Aunps, by Merck Group (1 mentions) Chondroitin sulfate, by Merck Group (1 mentions) Uric acid powder, by Merck Group (1 mentions) Sodium acetate, by Merck Group (1 mentions) Trichloroacetic acid, by Merck Group (1 mentions) Sodium chloride (nacl), by Thermo Fisher Scientific (1 mentions) L cysteine hydrochloride, by Merck Group (1 mentions) L tyrosine, by Merck Group (1 mentions)

Close spelling variants of this product

Anhydrous sodium hydroxide (7 citations)

5 protocols using sodium hydroxide anhydrous pellets

1

Geopolymer Synthesis Using Metakaolin and Sodium Silicate

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The compositions of the high-purity Metakaolin (ASTM C-618 [29 ] Class N pozzolans) (MetaMax® BASF, NewYork, NY, USA) and Sodium silicate solution (Prochin Italia S.r.l., Caserta, Italy) used to prepare the alkali-activated reacting paste are reported in Table 1. Reagent-grade Sodium hydroxide anhydrous pellets (Sigma-Aldrich, St. Louis, MO, USA) were used to prepare the alkaline activating solution according to the procedures described in a previous paper [30 (link)].
The alkaline activating solution, prepared by dissolving Sodium hydroxide in the Sodium silicate solution in a 1/7.7 weight ratio, was equilibrated at room temperature for 24 h before adding the solid Metakaolin [30 (link),31 (link)]. Metakaolin solid powder was incorporated into the liquid alkaline activating solution maintained at 5 °C in a thermostated bath in a liquid-to-solid ratio of 1/1.7, mechanically mixed, and sonicated for 10 min.
The final composition of the whole geopolymeric system was previously determined by EDS analysis in a previous paper [30 (link)] as Al2O3 3.48 SiO2 1.0 Na2O 12.14 H2O with a molar ratio Silica/Alumina of 3.48.
Aversa R., Ricciotti L., Perrotta V, & Apicella A. (2023). Chemorheology of a Si/Al > 3 Alkali Activated Metakaolin Paste through Parallel Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). Polymers, 15(19), 3922.
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2

Extraction of Rubber Seed Oil

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The rubber seeds were collected from a local plantation nearby Universitas Sumatera Utara – Medan, Indonesia and used directly after being separated from the shell. Methanol (gradient grade of ≥99.9%), sodium hydroxide anhydrous pellets (reagent grade of ≥98%) and methyl heptadecanoate (C17:0) (analytical standard grade) were purchased from Sigma-Aldrich through local dealer and are used as received.
Tarigan J.B., Anggraini R., Sembiring R.P., Supeno M., Tarigan K., Ginting J., Karo-karo J.A, & Sitepu E.K. (2022). Waste rubber seeds as a renewable energy source: direct biodiesel production using a controlled crushing device. RSC Advances, 12(4), 2094-2101.
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3

Geopolymer Synthesis Using Metakaolin and Sodium Silicate

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The compositions of the high-purity Metakaolin (ASTM C-618 [29 ] Class N pozzolans) (MetaMax® BASF, NewYork, NY, USA) and Sodium silicate solution (Prochin Italia S.r.l., Caserta, Italy) used to prepare the alkali-activated reacting paste are reported in Table 1. Reagent-grade Sodium hydroxide anhydrous pellets (Sigma-Aldrich, St. Louis, MO, USA) were used to prepare the alkaline activating solution according to the procedures described in a previous paper [30 (link)].
The alkaline activating solution, prepared by dissolving Sodium hydroxide in the Sodium silicate solution in a 1/7.7 weight ratio, was equilibrated at room temperature for 24 h before adding the solid Metakaolin [30 (link),31 (link)]. Metakaolin solid powder was incorporated into the liquid alkaline activating solution maintained at 5 °C in a thermostated bath in a liquid-to-solid ratio of 1/1.7, mechanically mixed, and sonicated for 10 min.
The final composition of the whole geopolymeric system was previously determined by EDS analysis in a previous paper [30 (link)] as Al2O3 3.48 SiO2 1.0 Na2O 12.14 H2O with a molar ratio Silica/Alumina of 3.48.
Aversa R., Ricciotti L., Perrotta V, & Apicella A. (2023). Chemorheology of a Si/Al > 3 Alkali Activated Metakaolin Paste through Parallel Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). Polymers, 15(19), 3922.
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4

Preparation and Characterization of Au NPs

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All chemicals and reagents
were used as received unless otherwise described. Sodium hydroxide
anhydrous pellets, uric acid powder, chondroitin sulfate, lyophilized
powder bovine serum albumin, and phosphatidylcholine, Au NPs (optical
density: 1.0; diameter: 20 nm; catalog number: 741965; 7.2 ×
1011 particles/mL) were purchased from Sigma-Aldrich (Milwaukee,
WI). Acetic acid was purchased from Fisher Scientific (Hampton, NH).
Coverslips (microslides, thickness: 0.96–1.06 mm), 20 mL scintillation
vials, 150 mL filtration system were obtained from Corning Inc. (Corning,
NY). Glass scintillation vials (20 mL), stir bars, and thermometers
were purchased from Sigma-Aldrich (St. Louis, MO). Polyurethane plastic
pouches were made from 2-mil poly tubing purchased from U-Line (Pleasant
Prairie, WI). Synthetic skin was acquired from SynDaver Labs (Tampa,
FL). The antialgae solution was manufactured by Clorox (Lawrenceville,
GA), and cyanoacrylate was purchased from Gorilla Glue, Inc. (Cincinnati,
OH). Aqueous solutions were prepared with deionized water (>18.0
MΩ
cm resistivity at 25 °C) obtained from a Millipore Direct Q3
system.
Boone-Kukoyi Z., Moody K., Nwawulu C., Ariori R., Ajifa H., Guy J.A., Lansiquot C., Ozturk B., McLemore G.L., Bonyi E, & Aslan K. (2019). Metal-Assisted and Microwave-Accelerated Decrystallization of Pseudo-Tophus in Synthetic Human Joint Models. ACS Omega, 4(2), 4417-4428.
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5

Protein Content Determination Protocol

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We used sodium hydroxide anhydrous pellets (>97% purity, 795429, Sigma-Aldrich, St. Louis, MO, USA); gelatin powder from bovine skin (Type B, G9391, Sigma-Aldrich, St. Louis, MO, USA); sodium chloride (>99% purity, S640, Fisher Scientific, Hampton, NH, USA); anhydrous disodium phosphate (1.06585, Sigma-Aldrich, St. Louis, MO, USA); casein, Hammarsten bovine (E0789, Sigma-Aldrich, St. Louis, MO, USA); trichloroacetic acid (>99% purity, T6399, Sigma-Aldrich, St. Louis, MO, USA); sodium acetate (>99% purity, S2889, Sigma-Aldrich, St. Louis, MO, USA); L-cysteine hydrochloride (>98% purity, C1276, Sigma-Aldrich, St. Louis, MO, USA); L-tyrosine (1.08371, Sigma-Aldrich, St. Louis, MO, USA); ethylenediaminetetra-acetic acid (EDTA) (>99.4% purity, E9884, Sigma-Aldrich, St. Louis, MO, USA); hydrogen peroxide (HP) (30% purity, Sigma-Aldrich, St. Louis, MO, USA); acetic acid (>99.7% purity, Fisher Scientific, Hampton, NH, USA); 6 N hydrochloric acid (72033, Honeywell, Charlotte, NC, USA); and 37% formaldehyde (FA) (CAS No. 50-00-0, Carolina Biological Supply Company, Burlington, NC, USA).
Chiarelli P.G., Martinez B., Nakamura T, & Mis Solval K. (2024). Enhancing Bromelain Recovery from Pineapple By-Products: A Sustainable Approach for Value Addition and Waste Reduction. Foods, 13(4), 589.
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