What are the main uses of dodecyl guanidine hydrochloride?
Sodium dodecyl benzene sulfonate has a wide range of main uses.
In the field of daily chemical industry, it is an important corner of detergent. The cover has excellent decontamination performance, which can disperse and emulsify oil in water, and blend with water, easily removing dirt on clothes, tableware and other things. Looking at the washing powder and detergent commonly found in the home, it contains this agent, which can be quickly soluble and has strong decontamination power, and can make the laundry clean as new.
It is also useful in industry. In the textile industry, after the fabric is treated, it can be used as an auxiliary agent to remove the oil, wax and impurities attached to the surface of the fabric, making the fabric more suitable for subsequent dyeing, printing and other processes to improve the quality of the fabric. In the field of metal processing, it can be used as a metal cleaning agent to effectively remove oil stains, cutting fluids, etc. on the metal surface, making the metal surface smooth and paving the way for subsequent processing or protective treatment.
In agriculture, it can be used as a pesticide auxiliary. It can increase the wettability and development of pesticides, make pesticides more uniform on the surface of crops, improve the contact and penetration of pesticides to pests and pathogens, thereby enhancing the efficacy, reducing the amount of pesticides, and reducing the impact of pesticide loss on the environment.
In the emulsion polymerization process, sodium dodecylbenzene sulfonate acts as an emulsifier. The oil phase can be uniformly dispersed in the aqueous phase to form a stable emulsion system, which is crucial in the preparation of synthetic rubber, synthetic resin and other polymer materials, which can ensure the smooth progress of the polymerization reaction and control the particle size and properties of the polymer.
From this perspective, sodium dodecylbenzene sulfonate is indispensable in many industries. Its wide use and deep influence are actually one of the important substances in the chemical industry.
What are the physical and chemical properties of dodecyl guanidine hydrochloride?
Sodium dodecyl benzene sulfonate is a common anionic surfactant, and its physical and chemical properties are as follows:
** 1. Physical properties **
1. ** Appearance **: Under normal conditions, it is mostly white or light yellow powdery solid, which is easy to store and transport. In many industrial production and civil products, this appearance is common, such as sodium dodecyl benzene sulfonate in cleaning products such as washing powder.
2. ** Solubility **: It is easily soluble in water, and can ionize sulfonate anions and sodium ions in water. With good water solubility, sodium dodecyl benzene sulfonate can fully disperse and play a role in aqueous solution systems. Like when formulating detergents, it can quickly dissolve to form a uniform solution, effectively removing oil stains.
3. ** Odor **: Pure sodium dodecyl benzene sulfonate has a weak odor and almost no special odor. This characteristic makes it widely used in products with strict odor requirements, such as personal care products and household cleaning products. It will not cause discomfort to users due to its own odor.
* Second, chemical properties **
1. ** Surface activity **: sodium dodecyl benzene sulfonate has excellent surface activity and can significantly reduce the surface tension of water. In aqueous solution, the lipophilic group (dodecyl group) of its molecules tends to gather at the oil-water interface or the air-water interface, while the hydrophilic group (sulfonic acid group) faces the water phase, thereby reducing the interfacial free energy and exhibiting good emulsification, dispersion, solubilization and foaming properties. Taking the washing process as an example, it can emulsify and disperse oil stains in water to achieve the purpose of cleaning.
2. ** Stability **: Under normal conditions, sodium dodecyl benzene sulfonate is chemically stable. In acidic, alkaline and certain redox environments, it can still maintain its own structure and performance stability. However, under extreme conditions of strong acid or strong base and high temperature, its molecular structure may be damaged, resulting in performance degradation. For example, in a highly acidic environment, sulfonic acid groups may undergo reactions such as hydrolysis, which affects their surface activity.
3. ** Reactivity with other substances **: Sodium dodecylbenzene sulfonate can react with a variety of metal ions to generate corresponding metal salts. The solubility and surface activity of these metal salts may be different from sodium dodecylbenzene sulfonate itself. At the same time, it can also interact with some cationic surfactants to form precipitates or complexes, thereby changing the surface activity and other physical and chemical properties of the system. Such interactions need to be fully considered in practical applications.
What is the production method of dodecyl guanidine hydrochloride?
Sodium dodecyl benzene sulfonate is a commonly used anionic surfactant. Its preparation method is not detailed in ancient books, but it is based on current knowledge. There are about the following methods.
First, the alkylation method. First, benzene and long-chain olefins are alkylated under the action of a catalyst to obtain alkylbenzene. This process requires selecting a suitable catalyst, such as anhydrous aluminum trichloride, and controlling the temperature, pressure and time of the reaction, so that the olefins and benzene can be properly combined to form alkylbenzene.
Next, the sulfonation reaction. Using alkylbenzene as a raw material, it interacts with fuming sulfuric acid or sulfur trioxide. If fuming sulfuric acid is used, check its concentration and dosage, slowly add it dropwise to alkylbenzene, stir and control the temperature at the same time, so that the reaction can proceed smoothly and generate dodecyl benzene sulfonic acid.
At the end, neutralize the reaction. The dodecyl benzene sulfonic acid prepared is neutralized with sodium hydroxide solution. This step requires precise control of the concentration and addition of the alkali solution, so that the pH reaches an appropriate value, and finally the dodecyl benzene sulfonic acid is obtained. The essence of the reaction is to control all kinds of conditions, so that each step of the reaction is perfect, so as to obtain a pure and excellent product. Although the ancient method may not be exactly the same as this, this is a good method in common use today, which can be used for those who seek to make this product.
What are the precautions when using dodecyl guanidine hydrochloride?
When using dodecyl benzene sulfonic acid, please pay attention to the following general things:
First, it depends on the proportion of the ratio. This is the most important, the degree of high, or cause the washing items to suffer, and only increase the cost; the degree of insufficient, in order to achieve the ideal washing effect. It is necessary to accurately match the appropriate degree according to the degree of stain of the washing image, the material quality and other factors. For example, if the general laundry is slightly stained, the proportion of stain can be slightly lower; if it is oily and heavy, it is necessary to improve the degree of stain.
Second, it should be used in the environment. Dodecyl benzene sulfonic acid is used in different degrees and acidity environments, and its activity table is different. Generally speaking, in the degree of stain, its activity is good, and the decontamination efficiency is better. However, if the temperature is too high, it may break the chemical resistance, resulting in reduced efficiency; if the temperature is too low, the activity will be inhibited, and the washing effect will be poor. Furthermore, it can usually function well in neutral to weak environments. If the deviation of the acidity of the environment is too large, it will also affect its washing efficiency.
Third, pay attention to the impact of human beings and the environment. This product is often used for washing, but it is directly connected to the skin, or the skin is not damaged, sensitive and so on. Therefore, it is recommended to wear gloves and other anti-pollution products when using it. And if it is discharged into the environment, or caused by water, it will cause certain pollution. Therefore, when using the liquid, it must be properly handled, follow the rules of phase protection, and must not be poured arbitrarily.
Fourth, consider the compatibility of other washing materials. In some cases, it is used in combination with other washing ingredients to increase the washing effect, or dodecylbenzene sulfonic acid. In this case, pay attention to whether each ingredient will cause adverse reactions, so as not to weaken the washing efficiency or even generate harmful substances. Only by deeply understanding its chemical characteristics can we reasonably match and achieve the best washing effect.
What is the price range of dodecyl guanidine hydrochloride in the market?
In today's world, what is the price of sodium dodecyl benzene sulfonate in the market? This question is related to business affairs and also involves people's livelihood needs.
Sodium dodecyl benzene sulfonate is a common surfactant with a wide range of uses. It is widely used in daily chemical and washing industries. Its price range often varies depending on quality, place of origin, and market supply and demand.
As far as market conditions are concerned, if it is an ordinary commercial grade, its price is between a few yuan and a few tens of yuan per kilogram. For high-quality products, due to the fine process, higher purity, or special properties, its price may be slightly higher, up to tens of yuan per kilogram. If it is an industrial bulk purchase, the price is based on quantity, and the unit price may be slightly lower.
However, the market conditions are ever-changing, and the price of raw materials, transportation costs, and supply and demand can all cause fluctuations in their prices. In recent times, if the price of raw materials rises, or transportation is hindered, the price will also float; on the contrary, if the supply exceeds demand, the price may fall.
In addition, in different places, the price varies due to the business environment and the difference in taxes. In prosperous cities, prices may be high; in remote places, prices may vary due to transportation costs, etc. In order to know the exact price, when you observe the real-time market conditions of the market and consult the merchants, you can get an accurate number.