Sodium acetate can be formed from the metathesis/double replacement reaction of sodium bicarbonate and acetic acid. (See the Supplemen


Sodium acetate can be formed from the metathesis/double replacement reaction of sodium
bicarbonate and acetic acid. (See the Supplemental Information concerning metathesis
reactions.) Determine the percent yield when 0.537 g of sodium acetate is obtained from mixing
15.0 g of NaHCO3 with 125 mL of 0.15 M acetic acid.

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RuslanHeatt 2 weeks 2021-07-19T13:57:14+00:00 1 Answers 1 views 0

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    Sodium Acetate Trihydrate BP Specifications

    Sodium Acetate BP


    Action and use

    Used in solutions for dialysis; excipient.


    Sodium ethanoate trihydrate.


    99.0 per cent to 101.0 per cent (dried substance).



    Colourless crystals.


    Very soluble in water, soluble in ethanol (96 per cent).


    A. 1 ml of solution S (see Tests) gives reaction (b) of acetates.

    B. 1 ml of solution S gives reaction (a) of sodium.

    C. Loss on drying (As shown in the Relevant Test).


    Solution S

    Dissolve 10.0 g in carbon dioxide-free water prepared from distilled water R and dilute to 100 ml 100 ml with the same solvent.

    Appearance of solution

    Solution S is clear and colourless.


    7.5 to 9.0.

    Dilute 5 ml of solution S to 10 ml with carbon dioxide-free water.

    Reducing substances

    Dissolve 5.0 g in 50 ml of water, then add 5 ml of dilute sulphuric acid and 0.5 ml of 0.002 M potassium permanganate. The pink colour persists for at least 1 h. Prepare a blank in the same manner but without the substance to be examined.


    Maximum 200 ppm.


    Maximum 200 ppm.


    Maximum 0.2 ppm, if intended for use in the manufacture of dialysis solutions.


    Maximum 2 ppm, determined on 0.5 g.

    Calcium and magnesium

    Maximum 50 ppm, calculated as Ca.

    Heavy metals

    Maximum 10 ppm.


    Maximum 10 ppm, determined on 10 ml of solution S.

    Loss on drying

    39.0 per cent to 40.5 per cent, determined on 1.000 g by drying in an oven at 130C.

    Sodium Acetate FCC Food Grade, US Food Chemical Codex

    C2H3NaO2 Formula wt, anhydrous 82.03

    C2H3NaO2·3H2O Formula wt, trihydrate 136.08


    Sodium Acetate occurs as colorless, transparent crystals or as a granular, crystalline or white powder. The anhydrous form is hygroscopic; the trihydrate effloresces in warm, dry air. One gram of the anhydrous form dissolves in about 2 mL of water; 1 g of the trihydrate dissolves in about 0.8 mL of water and in about 19 mL of alcohol.

    Function: Buffer.


    Identification: A 1:20 aqueous solution gives positive tests for Sodium and for Acetate.

    Assay: Not less than 99.0% and not more than 101.0% of C2H3NaO2 after drying.

    Alkalinity Anhydrous: Not more than 0.2%; Trihydrate: Not more than 0.05%.

    Lead: Not more than 2 mg/kg.

    Loss on Drying: Anhydrous: Not more than 1.0%; Trihydrate: Between 36.0% and 41.0%.

    Potassium Compounds: Passes test.

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