4-Acetamidobenzaldehyde, 4-bromobenzaldehyde, N-bromosuccinimide (NBS), boron trifluoride diethyl etherate (BF3·OEt2), 2,4-dimethylpyrrole, glacial acetic acid, piperidine, Rhodamine 6G, anhydrous sodium sulfate (Na2SO4), tetrachloro-1,4-benzoquinone (p-chloranil), triethylamine (TEA), trifluoroacetic acid (TFA), and zinc phthalocyanine were purchased from Sigma-Aldrich. Spectroscopic grade solvents were used for the photophysical and the open aperture Z-scan studies.
Anhydrous sodium sulfate na2so4
Manufactured by Merck Group
Sourced in United States, Germany
Anhydrous sodium sulfate (Na2SO4) is a white crystalline powder that is commonly used as a drying agent and in various laboratory procedures. It is an inorganic compound that is highly soluble in water and has a high affinity for moisture. Anhydrous sodium sulfate is often used to remove water from organic solvents and other liquids.
Automatically generated - may contain errors
Lab products found in correlation
N hexane, by Merck Group (4 mentions)
Florisil, by Merck Group (4 mentions)
Methanol, by Merck Group (3 mentions)
Dichloromethane, by Merck Group (2 mentions)
Chlorpyrifos, by LGC (2 mentions)
Cypermethrin, by LGC (2 mentions)
Standards of lambda cyhalothrin, by LGC (2 mentions)
Alpha hch, by LGC (2 mentions)
Beta hch, by LGC (2 mentions)
Gamma hch, by LGC (2 mentions)
Delta hch, by LGC (2 mentions)
Alpha and beta endosulfan, by LGC (2 mentions)
Chlorpyrifos d10, by LGC (2 mentions)
Permethrin, by LGC (2 mentions)
P p ddd, by LGC (2 mentions)
Anhydrous mgso4, by Merck Group (2 mentions)
Sulfuric acid, by Merck Group (2 mentions)
Acetone, by Merck Group (2 mentions)
Concentrated sulfuric acid h2so4, by Merck Group (2 mentions)
Glacial acetic acid, by Merck Group (1 mentions)
22 protocols using anhydrous sodium sulfate na2so4
1
Synthesis and Characterization of BODIPY Dyes
2
Analytical Standards for Antioxidant Assays
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The analytical class chemicals, methanol, n-alkanes series (C8-C28), DPPH (2,2-diphenyl-1picrylhydrazyl), ABTS (2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid)), ascorbic acid, trolox (6-hydroxy-2,5,7,8-tetramethylchroman-2 carboxylic acid), butylated hydroxy anisole (BHA), butylated hydroxytoluene (BHT), anhydrous sodium sulfate (Na2SO4), and potassium persulfate (K2S2O8) were procured from Sigma-Aldrich (St. Louis, MO, USA).
3
Synthesis and Characterization of 4-Aminophenyl Disulfide
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Briefly, 4-aminophenyl disulfide (4-AFD) was purchased from Molekula (Rimini, Italy). Vanillyl alcohol (98%), phloroglucinol (99%), epichlorohydrine (99%), benzyltriethylammonium chloride (TEBAC, 99%), anhydrous sodium sulfate (Na2SO4, 99%), sodium hydroxide pellets (NaOH), and all used solvents (ethyl acetate, dichloromethane) (>95%) were purchased from Sigma Aldrich (Saint-Quentin Fallavier, France). Tetraethylammonium bromide (TEAB, 98%) was purchased from Alfa Aesar (Kandel, Germany). Supersap CLR epoxy resin system was purchased from Entropy Resins (Cupertino, CA, USA). All reagents, reactants and solvents were used as received (Figure 1 ).
4
Analytical Grade Reagent Preparation
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The reagents, all analytical grade, were purchased commercially and used without further purification. Acetonitrile (ACN) and methanol (MeOH), both LC-MS grade, were obtained from JT Baker (Center Valley, PA, USA); the formic acid (98% v/v), from Panreac (Barcelona, Spain); and the sodium chloride (NaCl) (99.8% w/w), from Synth (Diadema, Brazil). HPLC grade hexane, glacial acetic acid (99.8% v/v), ethylenediaminetetraacetic acid (EDTA disodium salt) (≥99% w/w), anhydrous magnesium sulfate (MgSO4) (98% w/w), and anhydrous sodium sulfate (Na2SO4) (≥99% w/w) were supplied by Sigma-Aldrich (Saint Louis, MO, USA). In turn, ammonium formate (CH5NO2) (99% w/w) was received from Acros Organics (Geel, Belgium); and the dispersive phase Bondesyl octadecylsilane-C18 (40 µm), from Agilent Technologies (Santa Clara, CA, USA). Finally, the ultrapure water was generated using the Milli-Q Gradient purification system, manufactured by Millipore (conductivity <0.055 µS cm−1, resistivity = 18.2 MΩ cm) (Bedford, MA, USA).
5
Cystamine-Crosslinked Cotton Hydrogels
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N,N′-methylenebisacrylamide (M, 99%), L-cystine (CYSS, 99%), lithium hydroxide monohydrate (LiOH∙H2O, 98%), 1 M hydrochloric acid (HCl), cystamine dihydrochloride (CASS, >98%), triethylamine (TEA, >99%), diethyl ether, dichloromethane, and anhydrous sodium sulfate (Na2SO4) were supplied by Sigma-Aldrich (Milano, Italy). Diethyl vinylphosphonate (97%) was supplied by TCI Chemicals (Israel) and used as received. Cotton (COT) with an area density of 240 g∙m−2 was purchased from Fratelli Ballesio S.r.l. (Torino, Italy).
6
Quantitative Analysis of BUVSs
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Standards of UV-PS, UV-320, UV-326, UV-327, UV-328, UV-329, and surrogate standards Allyl-bzt and phenanthrene-d 10 were purchased from Sigma-Aldrich (St. Louis, MO, USA). Purities of all the standards were not less than 98%. The physicochemical characteristics of BUVSs are shown in Table S1,Table S2. Analytical grade chemicals, anhydrous sodium sulfate (Na 2 SO 4 ) (60 mesh) was purchased from Sigma-Aldrich (St. Louis, MO, USA), and neutral silica gel (100-200 mesh) was purchased from Thermo Fisher Scienti c Co., Ltd. Solvents, including dichloromethane, isooctane, and n-hexane, were of HPLC grade (Sigma-Aldrich, St. Louis, MO, USA). Ultrapure water was obtained from an ultrapure water system produced by Shanghai Hitech Instruments Co., Ltd.
Individual stock solutions of each BUVSs (1g•L -1 ) were made in isooctane. Further dilutions and mixtures of target species were prepared in n-hexane. All the working solutions were stored in brown glass bottles at -20°C.
Individual stock solutions of each BUVSs (1g•L -1 ) were made in isooctane. Further dilutions and mixtures of target species were prepared in n-hexane. All the working solutions were stored in brown glass bottles at -20°C.
7
Organic Solvent Synthesis Protocols
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Amberlite® IR-120 hydrogen form, anhydrous sodium sulfate Na2SO4 (99%) and all solvents (>95%) used were purchased from Sigma Aldrich. Hydrogen peroxide aqueous solution (35%, w/w) was purchased from Alfa Aesar. Acetic acid (99%) was purchased from abcr GmbH. Vegetable oils were obtained from various suppliers. The cationic photoinitiator triarylsulfonium hexafluoroantimonate salt, mixed 50 wt% in propylene carbonate were purchased from Sigma Aldrich (Milan, Italy). All reagents, reactants and solvents were used as received without further purification.
8
Synthesis of Rac-Alcohols and Acetates
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Chemical reagents were purchased from different commercial sources and used without further purification. Acetone, n-butanol, heptane, hexane and dichloromethane (DCM) were acquired from Biograde ® . Tetrahydrofuran (THF) and acetonitrile (MeCN), HPLC grade, were purchased from TEDIA ® . Acetic anhydride (Ac 2 O) was acquired from Vetec ® . Anhydrous sodium sulfate (Na 2 SO 4 ) and 4-(N,N-dimethylamino)pyridine (DMAP) were acquired from Sigma-Aldrich ® . Analytical TLC analyses were performed on aluminum sheets pre-coated with silica gel 60 F254 (0.2 mm thick) from Merck ® . Flash chromatography using eluting mixtures of DCM, hexane, petroleum ether (PE) or ethyl acetate (EtOAc), was performed using silica gel 60 (230-240 mesh) from Biograde ® .
Except for rac-4, all rac-alcohols (2, 3 and 5) and rac-2-Ac and rac-3-Ac were prepared as previously reported [1, 5, 25] .
Except for rac-4, all rac-alcohols (2, 3 and 5) and rac-2-Ac and rac-3-Ac were prepared as previously reported [1, 5, 25] .
9
Pesticide Residue Extraction Protocol
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Standards of lambda-cyhalothrin, permethrin, cypermethrin, beta-cy uthrin, alpha-HCH, beta-HCH, gamma-HCH, delta-HCH, p,p'-DDD, o,p'-DDT, p,p'-DDT, p,p'-DDE, alpha-and beta-endosulfan, tri uralin, chlorpyrifos, chlorpyrifos D10 were purchased from Dr Ehrenstorfer (Augsburg, Germany) with a purity of at least 99%. Florisil, anhydrous sodium sulfate Na 2 SO 4 and anhydrous MgSO 4 were from Sigma-Aldrich (St. Louis, MO, USA). The C18 SPE cartridges (Chromabond, 6 mL, 1000 mg) were purchased from Macherey-Nagel. Hexane was of picograde quality and provided by Promochem (Wesel, Germany). Dichlomethane (DCM), diethyl ether, chloroform and ethyl acetate were all provided by VWR International (West Chester, Pennsylvania, USA). Falcon polypropylene graduated conical tubes (50 mL) with cap were commercially available from Greiner Bio-One (Germany). Acrodisc® 25 mm syringe lters (with 5 μm Versapor® membrane) were purchased from Pall Life Sciences (MI, USA) and hydrophilic single use syringe lters (0.2 µm pore size, Minisart) were from Sartorius (Goettingen, Germany). One hundred-milliliter ASE glass tubes with cap were from Greiner Bio-One (Germany).
10
Analytical Standards for Pesticide Quantification
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Standards of lambda-cyhalothrin, permethrin, cypermethrin, beta-cyfluthrin, alpha-HCH, beta-HCH, gamma-HCH, delta-HCH, p,p′-DDD, o,p′-DDT, p,p′-DDT, p,p′-DDE, alpha-and beta-endosulfan, trifluralin, chlorpyrifos, chlorpyrifos D10 were purchased from Dr Ehrenstorfer (Augsburg, Germany) with a purity of at least 99%. Florisil, anhydrous sodium sulfate Na 2 SO 4 and anhydrous MgSO 4 were from Sigma-Aldrich (St. Louis, MO, USA). The C18 SPE cartridges (Chromabond, 6 mL, 1000 mg) were purchased from Macherey-Nagel (Düren, Germany). Hexane was of picograde quality and provided by Promochem (Wesel, Germany). Dichloromethane (DCM), diethyl ether, chloroform and ethyl acetate were all provided by VWR International (West Chester, Pennsylvania, USA). Falcon polypropylene graduated conical tubes (50 mL) with cap were commercially available from Greiner Bio-One (Kremsmünster, Austria). Acrodisc® 25-mm syringe filters (with 5 μm Versapor® membrane) were purchased from Pall Life Sciences (NY, USA) and hydrophilic single-use syringe filters (0.2 µm pore size, Minisart) were from Sartorius (Goettingen, Germany). One hundred-milliliter ASE glass tubes with cap were from Greiner Bio-One (Kremsmünster, Austria).
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