Sodium acetate, anhydrous uses

Anhydrous sodium acetate has a wide range of uses. In the field of chemical industry, it is often used as a raw material for the preparation of acetic acid. It participates in many organic synthesis reactions, such as co-heating with halogenated hydrocarbons, and can form esters. This is an important way to make esters in organic synthesis, which is related to the preparation of many fine chemicals such as fragrances and drugs.

In the printing and dyeing industry, anhydrous sodium acetate can be used as a buffer. The pH of the dye solution has a great impact on the dyeing effect. It can maintain the stability of the pH value of the dye solution, make the dye evenly colored, and the fabric color is bright and firm, improving the quality of printing and dyeing products.

In the food industry, anhydrous sodium acet Because it has a certain bacteriostatic effect, it can inhibit the growth and reproduction of microorganisms, prolong the shelf life of food, and ensure food safety. It is commonly used in baked goods such as bread and cakes.

In the pharmaceutical field, anhydrous sodium acetate is also useful. It can be used as a raw material for drug synthesis or as a pH regulator in pharmaceutical preparations to ensure the stability and effectiveness of drugs.

In the sewage treatment industry, anhydrous sodium acetate can be used as a carbon source. In the process of biological nitrogen and phosphorus removal, microorganisms need carbon sources to maintain metabolism. Adding anhydrous sodium acetate can meet the demand of microorganisms for carbon sources, improve the efficiency of sewage nitrogen and phosphorus removal, and make the effluent quality meet the standard.

Sodium acetate, what are the physical properties of anhydrous

The physical properties of anhydrous sodium acetate are particularly important, and they are described in detail here.

Its shape is white crystalline powder, fine and uniform in quality. Looking at its color, it is as white as snow, without variegated stains, pure and pure. Smell it, no significant odor, quiet and no atmosphere.

On its density, it is about 1.528g/cm ³, which makes it have a specific specific proportion among species. Its melting point is quite high, reaching 324 ° C. When heated up to this point, it begins to melt into a liquid state. This characteristic makes it change in shape under high temperature environment.

As for solubility, anhydrous sodium acetate is easily soluble in water, and it dissolves in water to form a uniform solution. In ethanol, it also has a certain solubility, but it is slightly inferior to water. Its dissolution process is accompanied by a thermal effect. When dissolved in water, there is a slight release of heat, which makes the solution temperature rise slightly.

Furthermore, anhydrous sodium acetate has strong moisture absorption. Exposure to air makes it easy to absorb water vapor and cause its own deliquescence. Therefore, when stored, it needs to be properly sealed to prevent it from moisture and deterioration. Its crystal structure is regular and has good stability. Under normal conditions, it can survive for a long time without changing its properties. Looking at its physical properties, it is widely used in many fields, whether as a chemical raw material or as a reagent in the laboratory, depending on its characteristics.

Sodium acetate, anhydrous chemical properties are what

Anhydrous sodium acetate has unique chemical properties. Anhydrous sodium acetate is white powder, odorless, and can be slightly weathered in the air. It is alkaline, because acetate ions will hydrolyze, and it appears alkaline in aqueous solutions.

Looking at its thermal stability, when anhydrous sodium acetate is heated, it decomposes at about 324 ° C to produce products such as sodium carbonate and acetone. It can react with acids. In case of strong acid, acetic acid and corresponding salts will be formed, which is the embodiment of the principle of strong acid to weak acid. At the same time, anhydrous sodium acetate can form complexes with some metal ions, showing unique coordination properties.

In the field of organic synthesis, anhydrous sodium acetate has a wide range of uses. In the preparation of acetyl compounds, it is often used as an acetylation reagent; in ester synthesis reactions, it can be used as a catalyst or reactant to help the reaction proceed smoothly. In analytical chemistry, because of its alkalinity, it can be used as a reference material for calibrating acids to accurately determine the concentration of acids. In addition, anhydrous sodium acetate is also used in the printing and dyeing industry. It can be used as a buffer to adjust the pH of dyes and make the dyeing effect better.

In short, anhydrous sodium acetate plays a key role in many fields due to its special chemical properties. It has important applications in industrial production, chemical experiments, and so on.

Sodium acetate, anhydrous how to store

Sodium acetate without water is quite stable in nature. However, if you want to protect it well, you must also pay attention to all things. When placed in a cool and dry place, this is the most important thing. Cover it with fear of moisture. If it is in a humid place, it is easy to absorb moisture and cause quality damage. Just like pearls and jade are afraid of dust, sodium acetate without water is also afraid of moisture.

When hiding, it is advisable to use a sealed device. This is like building a strong city to protect treasures. The sealed device can block the entry of external moisture, air, etc., and prevent it from contacting and changing with carbon dioxide and other substances in the air. And do not store it together with strong oxidants. If the two meet, there may be unexpected changes. If dry wood is close to a fire, a crisis will appear. < Br >
And the storage temperature should not be too high, overheating may cause its properties to change. Place it in a cool place and keep it in a mild environment to preserve its quality for a long time. It should also be kept away from fire and heat sources, which can cause a sudden rise in temperature and endanger the stability of sodium acetate.

When handling, be sure to handle it with care. Although anhydrous sodium acetate is not a fragile thing, it can be handled rudely, or the packaging will be damaged, and moisture will take advantage of it and damage its quality. In short, if it is properly stored, according to the above methods, it can keep anhydrous sodium acetate for a long time and its quality will remain unchanged.

Sodium acetate, anhydrous in the production of what matters needing attention

To prepare anhydrous sodium acetate, many matters need to be paid attention to. First, the choice of raw materials must be excellent. Acetic acid and soda ash or caustic soda must reach the specified purity, and impurities will affect the quality of the product. Soda ash should be selected as high-quality industrial grade, and caustic soda must also meet the corresponding standards to ensure the purity of the reaction.

Second, the operation process must be rigorous. Taking the reaction of acetic acid and soda ash as an example, first dissolve soda ash in an appropriate amount of water in proportion, stir until it is completely dissolved, and make a soda ash solution. Slowly add acetic acid, stir while adding, and strictly control the reaction temperature and speed. Due to the exothermic reaction, if the speed is too fast and the temperature is too high, it will cause the acetic acid to evaporate and reduce the yield.

The reaction should be carried out in a clean, dry and well-ventilated place. Humid air will make the generated sodium acetate absorb water, affecting the degree of anhydrous.

Fourth, crystallization and drying need to be done properly. After the reaction is completed, sodium acetate crystals are obtained by evaporation, concentration and cooling crystallization. Pay attention to temperature and time during evaporation to avoid incomplete water loss or decomposition of crystals due to excessive evaporation. In the drying process, low temperature drying or vacuum drying can be used to ensure that the crystals are completely anhydrous.

Fifth, testing and packaging should not be underestimated. After making anhydrous sodium acetate, it is necessary to test the purity and moisture content before packaging. Packaging should be moisture-proof and sealing materials to prevent water absorption and deterioration during storage. In this way, high-quality anhydrous sodium acetate can be prepared.