Shaanxi BLOOM Tech Co., Ltd. is one of the most experienced manufacturers and suppliers of benzenesulfinic acid sodium salt cas 873-55-2 in China. Welcome to wholesale bulk high quality benzenesulfinic acid sodium salt cas 873-55-2 for sale here from our factory. Good service and reasonable price are available.
Benzenesulfinic acid sodium salt is white crystal or white powder, CAS 873-55-2, Molecular formula C6H5NaO2S. stable at normal temperature and pressure, avoiding oxide contact and easy to oxidize when exposed to light. It is slightly harmful to water. Do not let undiluted or a large amount of products come into contact with groundwater, waterways or sewage systems. Do not discharge materials into the surrounding environment without government permission. Used in medicine, electroplating industry and synthesis of photosensitive materials; Polymeric adhesion enhancer and plasticizer, used for plasticizing and modifying polyamide, epoxy resin and phenolic resin, used for ink, adhesive, nail polish and paint; Used as preservative in food and feed.
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CF |
C6H5NaO2S |
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EM |
164 |
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MW |
164 |
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m/z |
164 (100.0%), 165 (6.5%), 166 (4.5%) |
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EA |
C, 43.90; H, 3.07; Na, 14.01; O, 19.49; S, 19.53 |
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MP> 300 ° C (lit.), BP: 83-84 ° C, Storage conditions insert atmosphere, room temperature, Solubility (water), Form: crystals or crystal powder, Color: white, Solubility in water, Sensitivity hygroscopic, BRN 3598405, Dangerous goods signs Xi, xn, Hazard category code: 36 / 37 / 38-20 / 21 / 22, Safety instructions 26-37 / 39-36-24 / 25, WGK Germany 1, RTECS No.: da9135000, TSCA T, Customs Code: 29309090.
Synthesis of sodium benzenesulfonate:
The finished product is obtained by mixing equimolar benzene sulfinic acid and NaOH (40% aqueous sodium hydroxide solution), stirring at 30-40 ℃ for 2h, concentrating, cooling, crystallizing, filtering and vacuum drying. Benzenesulfonyl chloride, sodium pyrosulfite, water and sodium hydroxide are reduced to sodium benzenesulfonate at pH = 3.5-8.5 and 50 ℃. After decolorization, filtration and cooling to 15 ℃, sodium bisulfate is separated, and 30% hydrochloric acid is used to acidize into benzenesulfonic acid at 15-20 ℃. After washing with water and neutralization with alkali, sodium benzenesulfonate is obtained as colorless flake crystals.
Benzenesulfinic acid sodium salt is an important fine chemical product with multiple uses, playing a key role in various fields such as medicine, electroplating, photosensitive materials, resin modification, food, and feed.
(1) Drug intermediates
It is an important intermediate in drug synthesis and participates in the preparation of various drugs. In the synthesis process of anti-tumor drugs, it can participate in specific reaction steps and provide key structural units for the construction of drug molecules. For example, certain anti-tumor drugs require specific chemical structures to achieve their activity and selectivity, and the introduction of desired functional groups or structural fragments through chemical reactions can help improve the drug's activity and selectivity. In addition, sodium benzenesulfonate may also play a similar role in the synthesis of some other types of drugs, promoting the formation and optimization of drug molecules.
(2) Drug analysis
In the field of drug analysis, it can be used for the detection and qualitative and quantitative analysis of specific drugs. It can react with specific functional groups in drugs to produce characteristic chemical changes or spectral signals. For example, by undergoing oxidation-reduction reactions, complexation reactions, etc. with certain functional groups in the drug, the drug can undergo color changes, precipitation generation, or changes in spectral absorption peaks.
These characteristic changes can be used to detect the presence, content, and quality control of drugs. Accurate drug analysis is crucial in ensuring the quality and efficacy of drugs during drug development and production, providing an effective means for drug analysis.
(3) Local topical drug additives
It is also used in some topical medications. It can be used as an additive for certain skin disease drugs, with certain antibacterial, anti-inflammatory and other effects. In the treatment of skin diseases, local inflammation and bacterial infections are common issues. It can assist in improving the local inflammatory state of the skin and promoting skin healing by inhibiting the growth and reproduction of bacteria, reducing the release of inflammatory mediators. For example, in some medications for treating skin diseases such as eczema and dermatitis, adding sodium benzenesulfonate can enhance the efficacy of the medication and alleviate the symptoms of the patient.
(1) Primary Brightener for Bright Nickel Plating
It is a primary brightener for bright nickel plating, which significantly reduces the grain size of the nickel plating layer. During the electroplating process, the grain size of the nickel plating layer can affect the quality and appearance of the coating. A smaller grain size can produce a bright effect on the coating and give it good ductility. The general dosage is 0.1-0.3g/L. By adding an appropriate amount of sodium benzenesulfite, the performance of the nickel plating layer can be improved, and the glossiness and quality of the coating can be enhanced. It can make the coating more uniform and smooth, reduce the roughness and defects of the coating, thereby improving the appearance quality and performance of electroplated products.
(2) Used in conjunction with other brighteners
Usually used in combination with other brighteners to achieve better nickel plating results. For example, benzenesulfinic acid sodium salt can be used in combination with brighteners such as saccharin sodium. Saccharin sodium can reduce the grain size of nickel plating and impart a certain gloss, but using it alone cannot obtain a bright coating. As a low current density area brightener or displacement agent, when combined with brighteners such as saccharin sodium, their respective advantages can be fully utilized to obtain a mirror like bright nickel plating layer. In addition, other suitable brighteners can be selected and used in combination with sodium benzenesulfite according to specific electroplating processes and requirements to achieve the best nickel plating effect.
(1) Photographic industry reducing agent
It can be used as a reducing agent in the photosensitive industry. Reduction reactions play an important role in the preparation and processing of photosensitive materials. For example, during the development process, it is necessary to reduce the exposed silver halide to metallic silver in order to form a visible image. By providing electrons, the reduction reaction of silver halide can be promoted, improving the efficiency and quality of development. It can be used in conjunction with a developer to optimize the development conditions, making the image clearer and more accurate.
(2) Affects the performance of photosensitive materials
The use of benzenesulfinic acid sodium salt can affect the performance of photosensitive materials, such as sensitivity, contrast, etc. By adjusting the dosage and usage conditions of sodium benzenesulfonate, the sensitivity of the photosensitive material can be changed to meet different shooting needs. For example, in the preparation of highly sensitive photosensitive materials, the dosage can be appropriately increased to improve the sensitivity of the photosensitive material to light. At the same time, sodium benzenesulfonate can also affect the contrast of photosensitive materials, making the brightness and darkness levels of the image richer and improving the quality of the image.
(1) Polyamide resin modification
Can be used for plasticizing and modifying polyamide resins. In the synthesis or processing of polyamide resin, adding can improve the performance of the resin. It can increase the flexibility of the resin, lower the glass transition temperature of the resin, and maintain good performance even at lower temperatures. For example, in some polyamide products that require high flexibility, such as fibers, films, etc., adding sodium benzenesulfonate can improve the product's usability and processability. In addition, it can also improve the heat resistance, chemical corrosion resistance and other properties of polyamide resin, and broaden the application range of polyamide resin.
(2) Modification of epoxy resin and phenolic resin
It also plays an important role in the plasticization and modification of epoxy resin and phenolic resin. For epoxy resin, its toughness and impact resistance can be improved, reducing the brittle fracture of the resin under stress. Adding sodium benzenesulfite to phenolic resin can improve its processing performance, reduce its melt viscosity, and make it easier to form. At the same time, it can also improve the water resistance, weather resistance and other properties of epoxy resin and phenolic resin, extending the service life of the products.
Food and feed industry
(1) Food preservatives
Can be used as a preservative in the food industry. It can inhibit the growth and reproduction of microorganisms in food, extending the shelf life of food. Microbial contamination during food processing and storage can lead to food spoilage and spoilage, affecting the quality and safety of food. By interfering with the metabolic processes of microorganisms, inhibiting their growth and reproduction, the freshness and quality of food can be maintained. For example, adding an appropriate amount of sodium benzenesulfonate to some beverages, seasonings, and other foods can prevent the growth of microorganisms and extend the shelf life of the food.
(2) Feed preservatives
In the feed industry, it can also be used as a preservative. Feed is easily contaminated by microorganisms during storage and transportation, leading to spoilage and mold growth, which affects the nutritional value of feed and the health of animals. The addition of sodium benzenesulfonate can effectively inhibit the growth of microorganisms in feed, maintaining the quality and stability of the feed. It can prevent the nutrients in feed from being decomposed and destroyed by microorganisms, improve the utilization rate of feed, and ensure the growth and health of animals.
(1) Polymer adhesive reinforcement agent
Can be used as a polymer adhesive reinforcement agent. In polymerization reactions, it can promote the formation and cross-linking of polymers, improve their strength and bonding properties. For example, in the production of some adhesives, coatings, and other products, adding sodium benzenesulfonate can enhance the adhesion and durability of the products. It can better bond the adhesive to the object being bonded, improve the adhesion and wear resistance of the coating, and extend the service life of the product.
(2) Plasticizer
It also has the function of a plasticizer. It can increase the flexibility and processability of polymer materials such as plastics. Adding sodium benzenesulfonate during the plastic processing can reduce the melt viscosity of the plastic, making it easier to shape. At the same time, it can also improve the impact resistance and cold resistance of plastics, and enhance their usability. For example, in some plastic products that require high flexibility, such as hoses, films, etc., adding sodium benzenesulfonate can improve the quality and performance of the products.
(3) Analytical reagents
Can be used as an analytical reagent. In chemical analysis and experiments, it can serve as a reagent or indicator for reactions, used to detect and analyze the content or properties of certain substances. For example, in the analysis of some oxidation-reduction reactions, it can participate as a reducing agent in the reaction, and the content of the analyzed substance can be determined by observing the phenomenon of the reaction or measuring the parameters of the reaction. It can also be used to detect the presence of certain metal ions or organic compounds, providing an effective means for chemical analysis.
(4) Desiccant (specific purpose)
Although its use as a desiccant is relatively less mentioned, in certain specific situations, benzenesulfinic acid sodium salt may have certain moisture absorption properties and can be used for drying in environments or products that require high humidity. For example, in the storage or transportation of some electronic components, it is necessary to control the humidity of the environment to prevent the components from being damaged by moisture. Sodium benzenesulfonate can be used as a desiccant to absorb moisture from the environment and keep it dry.
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