C.I. Fluorescent Brightener 2132,2 '- (E) -Ethene-1,2-Diylbis (5- {[4-Methoxy-6- (Phenylamino) -1,3,5-Triazin-2-Yl] Amino} What is the main use of Benzenesulfonic Acid)
C.I. fluorescent whitening agent 213, that is, 2,2 '- (E) -ethylene-1,2-diylbis (5- {[4-methoxy-6- (phenylamino) -1,3,5-triazine-2-yl] amino} benzenesulfonic acid), this substance is quite widely used.
In the field of fabrics, it can significantly improve the whiteness and brightness of fabrics. Whether it is natural fiber fabrics such as cotton and linen, or chemical fiber fabrics such as polyester, adding an appropriate amount of this fluorescent whitening agent can make the fabric show a brighter and more pleasing color in natural light, just like the beauty of nature. In the paper industry, it is also indispensable. After the paper is treated, the whiteness is greatly improved, and the texture and visual effect are excellent, such as common writing paper, printing paper, etc., because of it, it is more white and smooth, just like plain silk new cut.
In the plastics industry, the fluorescent whitening agent also shows its talents. Many plastic products, such as plastic films, plastic pipes, etc., can improve the appearance, whiten and brighten, improve the quality of plastic products, and make them more shiny, just like beautiful jade. In addition, it also plays a key role in detergent formulations. Adding an appropriate amount of this fluorescent whitening agent to the detergent can enhance the whitening and decontamination effect of the fabric. The washed fabric is not only clean, but also brighter and whiter as new, just like rejuvenating.
C.I. Fluorescent Brightener 2132,2 '- (E) -Ethene-1,2-Diylbis (5- {[4-Methoxy-6- (Phenylamino) -1,3,5-Triazin-2-Yl] Amino} Benzenesulfonic Acid) What are the precautions during use
C.I. fluorescent whitening agent 213, that is, 2,2 '- (E) -ethylene-1,2-diylbis (5- {[4-methoxy-6- (phenylamino) -1,3,5-triazine-2-yl] amino} benzenesulfonic acid), this substance should pay attention to the following things when using:
First, safety protection is essential. This is a chemical, or there is a potential hazard to the human body. When operating, wear appropriate protective equipment, such as gloves, goggles, protective clothing, etc., to prevent skin contact, eye splashing and inhalation of dust. In case of inadvertent contact, rinse with plenty of water immediately. In serious cases, seek medical treatment immediately.
Second, proper storage should not be ignored. It should be stored in a dry, cool and well-ventilated place, away from fire and heat sources, and away from direct sunlight. At the same time, it should be stored separately from oxidants, acids, alkalis, etc., and should not be mixed to prevent dangerous chemical reactions.
Third, the use specifications must be followed. According to specific uses and needs, use in strict accordance with the specified dosage and method. Do not use in excess, so as not to affect the quality of the product, or cause other adverse consequences. During use, ensure smooth ventilation of the environment and prevent the accumulation of harmful gases.
Fourth, waste disposal cannot be ignored. After use, the remaining products and waste should be properly disposed of in accordance with relevant regulations and cannot be discarded at will to avoid pollution to the environment.
In short, the use of C.I. fluorescent whitening agent 213 requires comprehensive attention to safety, preservation, use, and disposal in order to achieve safety and efficiency.
C.I. Fluorescent Brightener 2132,2 '- (E) -Ethene-1,2-Diylbis (5- {[4-Methoxy-6- (Phenylamino) -1,3,5-Triazin-2-Yl] Amino} What are the chemical properties of Benzenesulfonic Acid)
C.I. fluorescent whitening agent 213, chemically named 2,2 '- (E) -ethylene-1,2-diyl bis (5- {[4-methoxy-6- (phenylamino) -1,3,5-triazine-2-yl] amino} benzenesulfonic acid), this substance has the following chemical properties:
Its molecular structure contains multiple functional groups such as triazine ring, benzene ring and sulfonic acid group. The sulfonic acid group endows the compound with a certain water solubility, enabling it to disperse well in the aqueous solution system, which is conducive to its use as a fluorescent whitening agent in papermaking, textile and other industries. The conjugate system within the molecule is large, and this conjugate structure is the key factor for its fluorescence characteristics. When irradiated by a specific wavelength of light, the electrons in the molecule absorb energy and transition to the excited state, and then emit fluorescence from the excited state to the ground state, thus achieving the effect of whitening. Its vinyl is connected to two structures containing triazine and benzene rings. This connection method further enhances the conjugation degree of the whole molecule, which has an important impact on the fluorescence properties. In addition, the presence of methoxy and phenylamino groups will affect the electron cloud distribution of the molecule, which in turn affects its spectral properties and chemical activities. Overall, the unique chemical structure of this substance determines that it has good fluorescence whitening properties and specific physical and chemical behaviors, and has important applications in the field of industrial production.
C.I. Fluorescent Brightener 2132,2 '- (E) -Ethene-1,2-Diylbis (5- {[4-Methoxy-6- (Phenylamino) -1,3,5-Triazin-2-Yl] Amino} What is the production method of Benzenesulfonic Acid)
Fluorescent whitening agent 213, chemically named 2,2 '- (E) -ethylene-1,2-diylbis (5- {[4-methoxy-6- (phenylamino) -1,3,5-triazine-2-yl] amino} benzenesulfonic acid), its preparation method is as follows:
Starting material, p-aminobenzenesulfonic acid is selected, and after diazotization, it is condensed with 1,3,5-triazine-2,4,6-trichloride under weakly basic conditions to obtain intermediate A. In this process, p-aminobenzenesulfonic acid is diazotized at low temperature under the action of hydrochloric acid and sodium nitrite, and then condensed with 1,3,5-triazine-2,4,6-trichloride in sodium carbonate solution.
Another p-methoxyaniline is taken and further condensed with the above intermediate A in an alkaline environment to form intermediate B. The reaction requires temperature and pH control to ensure a smooth reaction.
Ethylene is used as raw material and brominated to obtain 1,2-dibromoethane. 1,2-dibromoethane reacts with intermediate B under alkaline conditions to achieve connection and generate fluorescent whitening agent 213. This step requires strict control of the reaction conditions to avoid side reactions.
The entire preparation process requires fine control of the reaction conditions, including temperature, pH, material ratio and reaction time. The intermediate products in each step need to be properly separated and purified before high-purity fluorescent whitening agent 213 can be prepared.
C.I. Fluorescent Brightener 2132,2 '- (E) -Ethene-1,2-Diylbis (5- {[4-Methoxy-6- (Phenylamino) -1,3,5-Triazin-2-Yl] Amino} What is the environmental impact of Benzenesulfonic Acid
Fluorescent whitening agent C.I.213, chemically named 2,2 '- (E) -ethylene-1,2-diyl bis (5- {[4-methoxy-6- (phenylamino) -1,3,5-triazine-2-yl] amino} benzenesulfonic acid), this substance has many effects on the environment.
Its production process or pollution. The chemical reaction for synthesizing this fluorescent whitening agent is complicated and requires a variety of chemical raw materials and reagents, such as benzene-containing compounds and heavy metal catalysts. During production operations, if not handled properly, these substances may leak and cause pollution to air, soil and water. For example, if wastewater containing heavy metals is discharged into rivers without standard treatment, it will cause water pollution, affect the survival of aquatic organisms, and enrich through the food chain, threatening human health.
Its use and disposal will also affect the environment. This fluorescent whitening agent is commonly used in papermaking, textile and other industries. After the product is discarded, the fluorescent whitening agent may be released. For example, when waste paper and fabrics degrade in the natural environment, the fluorescent whitening agent enters the soil and water body. Due to its stable chemical structure, it is difficult to be degraded by microorganisms, and it will remain in the environment for a long time, which may change the physical and chemical properties of the soil and affect plant growth. In water bodies, it will interfere with the balance of aquatic ecosystems, affect the photosynthesis and metabolism of aquatic organisms such as algae, and then affect the entire aquatic food chain.