Also known as: anhydrous citric acid, chemical name: 2-hydroxypropane-1,2,3-tricarboxylic acid. It is a colorless translucent crystal, white granule or white crystalline powder; odorless, with a very sour taste; its aqueous solution shows an acidic reaction. It is slightly efflorescent in dry air; it is very easily soluble in water, easily soluble in ethanol, and slightly soluble in ether. It is often used as a buffer, pH adjuster, flavoring agent, stabilizer, excipient, disintegrant, etc., for oral, intravenous, ophthalmic, nasal, and inhalation, and general external use.
Also known as sodium benzoate, chemical name: sodium benzoate. It is a white granule, powder or crystalline powder; odorless or slightly odorous, slightly sweet and salty taste. It is easily soluble in water and slightly soluble in ethanol.
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