Sodium Acetate

Product Information

Sodium Acetate,it belongs to a kind of Industrial Acetate is an organic substance, molecular formula CH3COONa, molecular weight 82.03. Sodium acetate trihydrate is white crystal, relative density 1.45, melting point 58 ° C, weathering in dry air, in 120 ° C when the loss of water of crystallization, the temperature is then decomposed; anhydrous sodium acetate colorless transparent crystals, melting point 324 ° C. It can be used as buffer, mordant and dyeing agent, for the determination of lead, copper and nickel iron, organic synthesis, film printing. Easily soluble in water, can be used as a buffer, mordant, for the determination of lead, copper, nickel and iron, culture medium preparation, organic synthesis, film washing and printing.

Synthesis method of sodium acetate
1, Sodium acetate trihydrate is placed in a porcelain dish and heated at 120°C until a dry white substance is obtained, yielding anhydrous sodium acetate.
In organic synthesis, for example, when preparing methane by co-fusion of anhydrous sodium acetate and soda lime, the anhydrous sodium acetate used should be prepared before use. The appropriate amount of sodium acetate trihydrate in a porcelain evaporating dish, heated to about 58 ° C under the stirring of a glass rod, sodium acetate trihydrate dissolved in the water of crystallization, the water gradually evaporated to obtain a white solid, at this time the temperature is about 120 ° C.. Continue heating until the solid melts, but the temperature should not exceed the melting point of sodium acetate trihydrate (324 ℃), so as not to decompose sodium acetate into acetone and sodium carbonate. Cool slightly with stirring, finely grind in a milk bowl while still hot, and store immediately in an airtight container for later use.
Ca(CH3COO)2+ Na2CO3→ 2CH3COONa + CaCO3↓ 
2、Neutralize acetic acid with crystalline sodium carbonate, filter, evaporate, cool, crystallize, and dry at room temperature.
3, made by treating calcium acetate with sodium sulfate and sodium bicarbonate.
4, sodium acetate production methods are many, can be obtained by using dilute acetic acid or calcium acetate and soda ash; can also be obtained by using sodium sulfate and calcium acetate complex decomposition. Industry is also often used to recover sodium acetate from the scraps of pharmaceutical and spice factories.
Pour 628kg of dilute acetic acid into the reactor, and add 200kg of soda ash into the reactor in stages. Without stirring, the induced draft fan was turned on to extract gas. After the reaction is smooth, start stirring, so that the soda ash and acetic acid fully reacted, and then into the evaporator heating and concentration to the liquid density of 1.24g/cm3 when the heating is stopped. The reaction liquid is filtered and put into the crystallizer, the pH is adjusted to 9.2 with NaOH, and the crystallization is cooled to 35℃. The surface mother liquor was withdrawn, and 350kg of white powdery product was obtained by drying the crystallization. The primary yield is about 70%.

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(1)Rubber Products aging test belongs to the category of aging test, rubber aging refers to rubber and products in the processing, storage and use of the process, due to a combination of internal and external factors caused by the structure of the performance of the phenomenon caused by changes in the loss of use value. Expressed as cracking, sticky, hardening, softening, pulverization, discoloration, mold, etc..

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