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Edible Baking Soda NaHCO₃

Traits: white powder or monoclinic crystalline powder, odorless, taste salty, soluble in water, but less than the solubility of sodium carbonate in water, insoluble in ethanol, aqueous solution was slightly alkaline. Heat easily decomposed. Slowly decomposed in moist air.

About 50 ° C began to lose carbon dioxide, at 100 ° C all become sodium carbonate. In the weak acid in the rapid decomposition of its aqueous solution at 20 ℃ began to decompose carbon dioxide and sodium carbonate, to the boiling point of all decomposition. 25 ℃ dissolved in 10 copies of water, about 18 ℃ dissolved in 12 parts of water, insoluble in ethanol. The cold water made of non-agitation of the solution, the phenolphthalein test paper only slightly alkaline reaction, place or raise the temperature, the alkaline increase. 25 ℃ freshly prepared 0.1mol / L aqueous solution pH 8.3. Low toxicity, half lethal dose (rat, oral) 4420mg / kg.

Storage: dry, dark, sealed.

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