Anhydrous magnesium sulphate

Manufactured by Merck Group

Sourced in Germany, United States

Anhydrous magnesium sulphate is a laboratory drying agent used to remove water from organic solvents and other liquids. It is a white, crystalline powder that is highly hygroscopic, meaning it readily absorbs water from the surrounding environment. The compound is commonly used in organic synthesis and analytical chemistry to dry reaction mixtures and extracts prior to further processing or analysis.

Automatically generated - may contain errors

Lab products found in correlation

8 protocols using anhydrous magnesium sulphate

Multiresidue Pesticide Analysis by LC-MS

Check if the same lab product or an alternative is used in the 5 most similar protocols

The standards of pesticides included in the multiresidue method of study were provided by LGC (Teddington, UK) and Dr. Ehrenstorfer (Augsburg, Germany). The analytical standards were stored at −30°C. The standard-mix solution was prepared using individual stock solutions. Individual stock solutions (800–1000 mg/L) were prepared from each standard and stored in the dark at −30°C in amber glass vials.
Carbon dioxide (CO₂) 5.3 quality was supplied by Abello Linde (Madrid, Spain); LC-MS quality methanol used for mobile phase preparation was obtained from Fluka Analytical (Steinheim, Germany). LC-MS grade water from Fisher Chemical (Fair Lawn, NJ, USA) was used. The additives ammonium formate and formic acid were purchased from Sigma Aldrich (Steinheim, Germany). The salts employed in the QuEChERS extraction (anhydrous magnesium sulphate, sodium chloride, sodium hydrogenocitrate sesquihydrate, and sodium citrate tribasic dihydrate) were supplied by Sigma-Aldrich (Steinheim, Germany) except for PSA that was obtained from Supelco (Bellefonte, PA, USA).

Cutillas V., Ferrer C, & R. Fernández-Alba A. (2021). Liquid chromatography versus supercritical fluid chromatography coupled to mass spectrometry: a comparative study of performance for multiresidue analysis of pesticides. Analytical and Bioanalytical Chemistry, 413(23), 5849-5857.

+ Open protocol

+ Expand

Analytical-Grade Pesticide Extraction

Check if the same lab product or an alternative is used in the 5 most similar protocols

Analytical grade reagents of above 99% purity were used in the experiments. UPLC-grade acetonitrile and hexane were procured from VWR Chemicals (Leuven, Belgium). Anhydrous magnesium sulphate, disodium hydrogen sesquihydrate, trisodium citrate dehydrate, sodium chloride, and the pesticide active ingredient standards were purchased from Sigma–Aldrich (Bornem, Belgium). Fifteen-milliliter d-SPE tubes were obtained from Waters (Zellik, Belgium). Water was produced locally though a Milli-Q purification system.

Galani J.H., Houbraken M., Wumbei A., Djeugap J.F., Fotio D, & Spanoghe P. (2018). Evaluation of 99 Pesticide Residues in Major Agricultural Products from the Western Highlands Zone of Cameroon Using QuEChERS Method Extraction and LC-MS/MS and GC-ECD Analyses. Foods, 7(11), 184.

+ Open protocol

+ Expand

Evaluation of Antioxidant Capacity

Check if the same lab product or an alternative is used in the 5 most similar protocols

Solvents used for liquid chromatography were of HPLC grade. Hexane, methanol, dichloromethane, n-butanol, Folin-Ciocalteu reagent, trolox^®, 2,2-diphenyl-picrylhydrazyl (DPPH^•) stable radical, anhydrous magnesium sulphate, and gallic acid were from Sigma-Aldrich (Darmstadt, Germany). Sodium carbonate was from Penta (Prague, Czechia).

Grigorakis S, & Makris D.P. (2018). Characterisation of Polyphenol-Containing Extracts from Stachys mucronata and Evaluation of Their Antiradical Activity. Medicines, 5(1), 14.

+ Open protocol

+ Expand

Pesticide Extraction and Analysis

Check if the same lab product or an alternative is used in the 5 most similar protocols

Standard pesticides of 98–99% purity were collected from Dr. Ehrenstorfer GmbH (Augsburg, Germany). Acetonitrile, toluene, sodium chloride, PSA Bond silica (primary and secondary amine), graphite carbon black (GCB), triphenylphosphate (TPP) and anhydrous magnesium sulphate were obtained from Sigma-Aldrich (St. Louis, MO, USA). For analysis, high performance liquid chromatography (HPLC) grade organic solvents were used.

Rahman M., Hoque M.S., Bhowmik S., Ferdousi S., Kabiraz M.P, & van Brakel M.L. (2021). Monitoring of pesticide residues from fish feed, fish and vegetables in Bangladesh by GC-MS using the QuEChERS method. Heliyon, 7(3), e06390.

+ Open protocol

+ Expand

Multi-Residue Pesticide Analysis Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols

The standards of pesticides included in the multiresidue method of study were provided by LGC (Teddington, United Kingdom) and Dr Ehrenstorfer (Augsburg, Germany). The analytical standards were stored at -30 °C. The standard-mix solution was prepared using individual stock solutions. Individual stock solutions (800-1000 mg L -1 ) were prepared from each standard and stored in the dark at -40 °C in amber glass vials.
Acetone and ethyl acetate were obtained from Fluka Analytical (Steinheim, Germany). The salts employed in the QuECh-ERS extraction (anhydrous magnesium sulphate, sodium chloride, sodium hydrogenocitrate sesquihydrate, and sodium citrate tribasic dihydrate) were supplied by Sigma-Aldrich, (Steinheim, Germany) except for PSA that was obtained from Supelco (Bellefonte, PA, USA). Ultra-gradient HPLC-grade acetonitrile was obtained from Honeywell (Charlotte, NC, USA).

Cutillas V., García-Gallego G., Murcia-Morales M., Ferrer C, & Fernández-Alba A.R. (2024). Beyond helium: hydrogen as a carrier gas in multiresidue pesticide analysis in fruits and vegetables by GC-MS/MS. Analytical methods : advancing methods and applications, 16(11).

+ Open protocol

+ Expand

Antioxidant Compounds Analysis Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols

Lycopene, β-carotene, 2,2-diphenyl-1-picrylhydrazyl (DPPH), 6-hydroxy-2,5,7,8-tetramethylbroman-2-carboxylic acid (Trolox), Folin–Ciocalteu reagent (2 N), gallic acid, anhydrous sodium carbonate, Supelco 37 Component FAME Mix, sodium hydroxide, boron trifluoride–methanol (BF₃-MeOH) (10–14%) complex solution, anhydrous magnesium sulphate, acetone, ethyl acetate, methanol, bioethanol, n-heptane and hexane used in this study were of analytical grade, from Sigma-Aldrich (Munich, Germany). CO₂ with 99.9% purity was acquired from Linde Gaz (Bucharest, Romania).

Popescu M., Iancu P., Plesu V., Todasca M.C., Isopencu G.O, & Bildea C.S. (2022). Valuable Natural Antioxidant Products Recovered from Tomatoes by Green Extraction. Molecules, 27(13), 4191.

+ Open protocol

+ Expand

Analytical Reagents for Metabolomics

Check if the same lab product or an alternative is used in the 5 most similar protocols

Solvents (acetonitrile, hexane, and methanol) were supplied by Merck (Darmstadt, Germany). Deionized water (<18, MΩcm resistivity) was obtained in the laboratory using a Milli-QSP^® Reagent Water System (Millipore, Beadford, MA, USA).
Ammonium formate (99%), formic acid (≥98%), anhydrous magnesium sulphate, and sodium chloride were supplied by Sigma Aldrich (Madrid, Spain). Syringe nylon filters (13 mm diameter 0.22 µm pore size) were obtained from Analysis Vinicos S.L. (Tomelloso, Spain). The derivatization reagent composed of BSA (N,O-bis(trimethylsily) + TMCS (trimthylcholorosilane) + TMSI (N-trimethylsilyimidazole) (3:2:3) was obtained from Supelco (Bellefonte, PA, USA). Sodium dihydrogen phosphate and disodium phosphate, used to prepare phosphate buffer, were acquired from Panreac Quimica S.L.U. (Barcelona, Spain).

Carballo D., Font G., Ferrer E, & Berrada H. (2018). Evaluation of Mycotoxin Residues on Ready-to-Eat Food by Chromatographic Methods Coupled to Mass Spectrometry in Tandem. Toxins, 10(6), 243.

+ Open protocol

+ Expand

Synthetic Musks: Characterization and Quantification

Check if the same lab product or an alternative is used in the 5 most similar protocols

The synthetic polycyclic musks cashmeran (DPMI), celestolide (ADBI), galaxolide (HHCB), phantolide (AHMI) and tonalide (AHTN) were obtained from LGC Standards (Barcelona, Spain) as solid standards with 99% purity, except for HHCB which contains approximately 25% of diethyl phthalate. Musk tibetene (MT) and musk moskene (MM) were also purchased from LGC Standards, but as 10 mg L -1 solution in cyclohexane. Musk ambrette (MA) and musk ketone (MK) were purchased as solid standards from Dr. Ehrenstorfer GmbH (Augsburg, Germany) with 99% and 98% purity, respectively. Musk xylene (MX) was purchased as 100 mg L -1 solution in acetonitrile, exaltolide (EXA) as a solid standard with ≥95% purity and ethylene brassylate (EB) with ≥99% purity to Sigma-Aldrich (St. Louis, MO, USA). Stock solutions of each analyte (10 g L -1 ) were prepared in cyclohexane and the final mixed stock solution was prepared in acetonitrile.
All solutions were preserved at -20 o C and protected from the light. The chemical structures of the synthetic musks analysed in this study are shown in Fig. 1.
Anhydrous magnesium sulphate and sodium acetate were obtained from Sigma-Aldrich (St.
Louis, MO, USA), while PSA bonded silica and C18 from Supelco (Bellefonte, PA, USA). The MgSO4 was baked at 450 ºC overnight before use. All organic solvents (analytical grade) were purchased from VWR (Fontenay-sous-Bois, France).

Homem V., Silva E., Alves A, & Santos L. (2015). Scented traces--Dermal exposure of synthetic musk fragrances in personal care products and environmental input assessment. Chemosphere, 139.

+ Open protocol

+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Revolutionizing how scientists
search and build protocols!