Sodium benzoate
Molecular formula : C7H5NaO2
MW : 144.11
CAS No. :532-32-1

nature : white crystals or granules, or colorless powder. Flammable, low toxicity. Dissolved in water and ethanol, glycerol and methanol. Solution pH of about 8. No bad taste Weitian have convergence.

preparation methods : acid with sodium bicarbonate and were derived. Water and sodium bicarbonate, and the inclusion of the pot, heated to a boil dissolved into a sodium bicarbonate solution. Stirred into benzoic acid, pH to the reaction of Polish. Heating Yat make carbon dioxide, plus half an hour of activated carbon bleaching. Leaching and the filtrate concentrated slowly Add the film-within-fluid, guitar-drum drying, crushing, in sodium benzoate. Consumption of fixed acid (99.5%) 1045kg / t and sodium bicarbonate (98%) 610kg / t.

purposes : the goods for use as food additives (preservatives), the pharmaceutical industry fungicides, dyes Mordant industry, plastics industry plasticizers, also used as spices organic synthesis intermediate