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Glacial acetic acid, also known as acetic acid, is the simplest organic weak acid after formic acid. It is a colorless and pungent liquid at room temperature and pressure, and solidifies into colorless crystals. Its aqueous solution is weakly acidic and highly corrosive. Steam has irritating effects on the eyes and nose, and is the main component of vinegar.
Yuanming powder, also known as high-purity, fine-grained anhydrous sodium sulfate, is an inorganic compound. It is a white, odorless, bitter crystalline or powder with hygroscopicity, soluble in water, and its solution is mostly neutral. It is soluble in glycerol but insoluble in ethanol.
Citric acid, also known as citric acid, is an important organic weak acid. It is a colorless crystal, odorless, easily soluble in water, and has an acidic solution.
Oxalic acid is an organic acid, the simplest dicarboxylic acid, and a metabolic product of living organisms. It belongs to the category of strong acids, colorless columnar crystals, and is easily soluble in water but insoluble in organic solvents such as ether. It is widely present in plant-based foods.
Sodium nitrate is an inorganic compound that is a hygroscopic, colorless, transparent triangular crystal. Very soluble in water and liquid ammonia, soluble in methanol and ethanol, extremely slightly soluble in acetone, and slightly soluble in glycerol. When dissolved in water, it absorbs heat, the solution cools, and the aqueous solution becomes neutral.
Sodium hydrosulfite, also known as insurance powder, is an inorganic substance that is a white crystalline powder that is highly soluble in water and insoluble in ethanol.