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Common reagents for analytical chemistry products
The commonly used reagents for analytical chemistry products include multiple types, each with its specific application scenarios and functions.
Common acid reagents
Hydrochloric acid (HCl): commonly used for dissolving metals, cleaning glassware, etc.
Nitric acid (HNO3): used for dissolving metals, preparing nitrates, etc.
Sulfuric acid (H2SO4): used for dissolving metals, preparing salts, etc.
Perchloric acid (HClO4): Used to drive away other inorganic acids, but attention should be paid to its strong oxidizing and volatile properties when used.
Hydrofluoric acid (HF): the only sample that can decompose silicon based materials, suitable for the digestion of geological samples, ores, etc.
Aqua regia: a mixture of hydrochloric acid and nitric acid in a ratio of 3:1, used for decomposing metals, alloys, etc.
Common alkaline reagents
Sodium hydroxide (NaOH): used for neutralizing acids, preparing bases, etc.
Potassium hydroxide (KOH): also used for neutralizing acids, preparing bases, etc.
Ammonium hydroxide (NH3 · H2O): used to control the acidity and alkalinity of solutions, purify substances, etc.
Common oxidants and reducing agents
Potassium permanganate (KMnO4): a strong oxidant used for detecting unsaturated bonds in organic compounds.
Hydrogen peroxide (H2O2): used in disinfection, oxidation, and bleaching experiments.
Sodium sulfite (Na2SO3): a strong reducing agent used in biochemical analysis and textile processes.
Potassium ferrocyanide (K3 [Fe (CN) 6]): used for detecting ferrous ions, cyanides, etc.
Common indicators and other reagents
Phenol red, phenolphthalein, methyl orange: used to indicate the acidity, redox ability, etc. of a solution.
Ethanol: a widely used solvent in fields such as biochemistry and organic synthesis.
Copper sulfate (CuSO4): used as a desiccant to remove moisture from the solution.
Chloroform (CHCl3): commonly used for extracting and separating certain organic substances.