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[Chemical Knowledge]：Sodium salicylate properties, uses, upstream and downstream raw materials, storage methods, sodium salicylate aqueous solution

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Sodium salicylate properties

Sodium salicylate (sodium Salicylate), chemical formula C7H5NaO3, is an organic compound, belonging to the aromatic carboxylate. It is a white crystalline powder at room temperature, easily soluble in water, and the solution is alkaline. Sodium salicylate has high stability, but it will gradually decompose under the environment of high light and humidity. With a melting point of around 200°C, it is a common chemical intermediate and pharmaceutical ingredient.

Sodium salicylate uses

The use of sodium salicylate is very extensive, mainly including the following aspects:

Pharmaceutical Field: As a non-steroidal anti-inflammatory drug (NSAIDs), sodium salicylate has antipyretic, analgesic, anti-inflammatory and anti-rheumatic effects and is commonly used to treat various inflammatory and painful conditions. It is the sodium salt form of salicylic acid, which is less irritating to the gastrointestinal tract, so it is suitable for patients with poor tolerance to acidic drugs such as aspirin.
Cosmetics industry: Sodium salicylate has good keratolytic and antibacterial properties, so it is often used in exfoliating products, acne products and anti-dandruff shampoos to help clear skin pores and reduce sebum secretion.
Industrial applications Sodium salicylate also plays an important role in the manufacture of dyes, fragrances and preservatives. It is a precursor substance for certain dyes and is also used in the preparation of food preservatives due to its antibacterial properties.

Sodium salicylate upstream and downstream raw materials

The production of sodium salicylate requires a series of chemical raw materials and steps:

Upstream raw materials: The main raw materials of sodium salicylate are salicylic acid and sodium hydroxide (NaOH). Salicylic acid can be synthesized by the reaction of phenol with carbon dioxide (Kolbe-Schmitt reaction), while sodium hydroxide is the basic chemical raw material, which can be obtained from the chlor-alkali industry.
Production process: Salicylic acid reacts with sodium hydroxide in aqueous solution to form sodium salicylate. The reaction is usually carried out at room temperature, and the resulting solution is evaporated, concentrated and crystallized, and finally pure sodium salicylate crystals are obtained.
Downstream applications: The downstream products of sodium salicylate are mainly pharmaceutical preparations, cosmetics and industrial additives. Derivative products thereof include various tablets, creams, lotions, etc., for different therapeutic and care purposes.

Sodium salicylate storage method

Because sodium salicylate has a certain chemical activity, its storage conditions require special attention:

Avoid light storage: sodium salicylate will decompose under light, so it should be stored in the dark. It is usually recommended to store it in an opaque container and place it in a dry, cool environment.
Sealed storage: Sodium salicylate is easy to absorb moisture, and the container should be kept sealed during storage to avoid contact with moisture in the air. After opening and use, it should be resealed in time to prevent moisture absorption and caking.
Temperature control: Although sodium salicylate is stable at room temperature, it will accelerate its decomposition at high temperature. Therefore, the storage temperature should be controlled in a lower range to avoid direct sunlight and high temperature environment.

Summary

As an important organic compound, sodium salicylate has broad application prospects and market demand. Its diverse uses in medicine, cosmetics and industrial production demonstrate its unique chemical properties and functional value. Understanding the production process and storage methods of sodium salicylate is essential to ensure its quality and stability. In the future, with the progress of science and technology and the expansion of application fields, sodium salicylate is expected to play a greater role in more fields and bring more extensive social and economic benefits.

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