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Na2s2o3 5h2o

Na2S2O3·5H2O is a chemical compound that is a white crystalline solid. It is the pentahydrate form of sodium thiosulfate, a common laboratory chemical. The chemical formula represents its molecular structure, which includes two sodium atoms, two sulfur atoms, and three oxygen atoms, along with five water molecules. This compound is widely used in various chemical applications and laboratory settings.

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2 protocols using na2s2o3 5h2o

1

Synthesis and Characterization of Quaternary Ammonium Salts

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Cetyl trimethyl ammonium bromide (CTAB, 99%), Dodecyl trimethyl ammonium bromide (DTAB, 99%), Octyl trimethyl ammonium bromide (OTAB, 99%), Butyl trimethyl ammonium bromide (BTAB, 99%), Tetramethyl ammonium bromide (TMAB, 99%), Tetra ethyl ammonium bromide (TEAB, 99%), Tetra-n-propyl ammonium bromide (TPAB, 99%), Tetra-n-butyl ammonium bromide (TBAB, 99%), Hexadecyl dimethyl benzyl ammonium bromide (HDBAB, 99%), Ethyl hexadecyl dimethyl ammonium bromide (EHDAB, 99%), NaAuCl4·2H2O (99.8%), NH4Cl (99%), Na2SO3 (98%), Na2S2O3·5H2O (98%) and NaOH (98%) were purchased from Macklin. Na2SO4 (99%), Li2SO4 (99%), K2SO4 (99%), Cs2SO4 (99%), Sodium dodecyl sulfate (SDS, 99.9%), NaBr (99%), Benzaldehyde (99%) and Hydrobenzoin (99%, RR, SS and meso isomers) were purchased from Aladdin. Carbon ECP600JD was purchased from Sinero.
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2

Extraction of Gold from Oxidized Ore

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Pure gold foil (99.985% Au, thickness 0.025 mm) was purchased from Alfa Aesar and H2SO4 (98%), HCl (36%–38%), HNO3 (68%) and Br2 (3%) from Beijing Chemical Works. NBS (AR, 99%), Na2S2O3·5H2O (AR, 99%), CuSO4 (AR, 99%), CCl4 (AR, 98%), and NaOH (GR, 97%) were supplied by Macklin. KI (AR, 99%), I2 (AR, 99.8%) and ammonia (GR,25–28%) were bought from Sinopharm. Thiourea (AR, 99%), KOH (GR, 99.9%), acetone (HPLC) and ethanol (AR, 97%) were purchased from Aladdin. Deionized water was prepared by water purification systems (Millipore S.A.S.). Moreover, all these reagents were not further treatment before the experiments. The raw gold-bearing oxidized ore sample originated from the Republic of Kyrgyzstan, which belongs to a finely disseminated gold ore.
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