What are the common uses of polyhexamethylene biguanidine hydrochloride?
Common uses of polyoctamethylene biguanidine hydrochloride, although this chemical is not contained in "Tiangong Kaiwu", with today's knowledge, it can be described as follows:
First, in the field of disinfection and sterilization, its application is quite wide. It can be used for environmental disinfection in medical and health institutions, such as hospital wards, operating rooms and other places. It can effectively kill a variety of bacteria, viruses and fungi, keep the environment clean, and prevent the spread of germs. In daily disinfection, such as home kitchens and bathrooms, it can also be used to make disinfection products to ensure home hygiene.
Second, in water treatment, polyoctamethylene biguanidine hydrochloride can be used as a bactericidal and algae-killing agent. Water circulation system, such as industrial cooling water system, is prone to algae and bacteria, causing pipe blockage and equipment corrosion. When it is put into water, it can inhibit the growth of algae, kill bacteria, and maintain the normal operation of the water retention system. It is environmentally friendly and has little residue.
Third, in the agricultural field, it can be used for fruit and vegetable preservation. With its bactericidal performance, it can treat the surface of fruits and vegetables, slow down the process of microbial rot, prolong the preservation time of fruits and vegetables, and reduce the loss of storage and transportation. It can also be used for soil disinfection, improve the soil microbial environment, and help crops grow healthily.
Fourth, in the textile industry, it can give fabrics antibacterial properties. The treated fabric can inhibit the growth of bacteria for a long time, prevent the fabric from odor, discoloration and damage due to microbial action, and improve the quality and durability of the fabric, such as sportswear, home textiles, etc., providing users with a healthier and more comfortable experience.
How safe is polyhexamethylenebiguanidine hydrochloride?
The safety of polyhexamethylenebiguanidine hydrochloride is related to many parties, and it should be carefully observed.
This product has many applications in the field of disinfection and sterilization. With its properties, it can overcome all kinds of bacteria and toxins, and it is quite effective. However, its safety is mainly related to human contact. If it touches the skin or enters the eyes, its irritation needs to be carefully studied. After many tests, when used in moderation, the skin feels warm, and allergies and inflammation are rarely seen. This is the peace of skin contact.
As for mouth and nose inhalation, in commonly used scenarios, the amount of volatilization is small, and it will not cause respiratory diseases or damage to the viscera. Those who control this thing have taken into account the harm of volatilization, and control the amount of volatilization to ensure the safety of the breath.
If you accidentally eat it, the situation is slightly severe. However, this thing is in the body, and its decomposition is fixed. If you eat it in a small amount, it can be transported through the viscera, and it will come out with the two, without causing major harm. And according to the usual theory, people will not eat it unless they mean it. There are also doctors and pharmacists who can apply rescue and treatment methods after ingesting by mistake, so the risk of ingestion can also be controlled.
Furthermore, in the environment, the degradation of this substance is good. Discarded after use, over time, it can be turned into harmless things, without sewage and soil, without damaging the ecological balance, which is also environmentally safe.
In summary, polyhexamethylene biguanidine hydrochloride, when used in moderation and compliance, its safety can be guaranteed, and it is beneficial and less harmful to the human body and the environment.
What are the advantages of polyhexamethylene biguanidine hydrochloride over other disinfectants?
Compared with other disinfectants, polyhexamethylene biguanidine hydrochloride does have many advantages.
First, it has a wide range of sterilization. This agent can effectively kill all kinds of bacteria, fungi and viruses. Common bacteria such as typhoid bacillus and Escherichia coli, as well as viruses such as influenza virus, novel coronavirus, and even fungi such as Candida albicans, are difficult to hide. Its sterilization is like a vast net, no matter where the microorganisms live and what the form is, they can be eliminated, unlike some disinfectants that are only effective for specific types of microorganisms.
Second, it is efficient and fast. In just a few minutes, polyhexamethylene biguanidine hydrochloride can significantly reduce the number of microorganisms. In the face of a sudden epidemic, when it is necessary to quickly control the spread of the virus, it can efficiently disinfect the environment and the surface of items in a short period of time, effectively curb the spread of the virus. Compared with some disinfectants that take a long time to act to have a disinfection effect, the advantages are immediately apparent.
Third, the nature is stable. Under normal conditions at room temperature, this disinfectant can be stored for a long time without losing its effectiveness, and is not affected by excessive fluctuations in light and temperature. Even if it is stored in a general environment, its disinfection ability is still strong over the years, and it does not need to be replaced frequently or specially stored due to harsh storage conditions like some disinfectants.
Fourth, high safety. It has little irritation to human skin and mucous membranes, and there is no need to worry too much about causing harm to contacts when using it. Daily disinfection in hospitals, schools, homes and other places with dense personnel and high safety requirements can be used with confidence. At the same time, its toxicity is low, it will not leave too many harmful substances in the environment, it is friendly to the environment, and it will not cause lasting harm to the environment like some disinfectants containing heavy metals or strong irritating ingredients.
Fifth, it is non-corrosive. It has no corrosive damage to metals, fabrics, plastics and other materials. In medical institutions, it can be used for disinfection of medical apparatus without worrying about damage to equipment; in the home, it is used for disinfection of furniture and electrical surfaces without causing damage to objects, which greatly broadens its application scenarios.
What is the stability of polyhexamethylene biguanidine hydrochloride in different environments?
The stability of polyoctazoniminobiguanidine hydrazone in different environments is an interesting topic in the field of chemistry. The investigation of the stability of this substance needs to be analyzed in detail from various angles.
In an acidic environment, the stability of polyoctazoniminobiguanidine hydrazone may be affected by protonation. Hydrogen ions may combine with some groups of the substance, thereby changing its molecular structure and electron cloud distribution. If its structure contains groups such as nitrogen atoms that are easy to protonate, when the acidity is enhanced, the degree of protonation will increase, or the charge distribution within the molecule will be unbalanced, causing structural rearrangement and reducing stability. For example, when in a strong acid environment, certain chemical bonds may be weakened by protonation and eventually decomposed.
In an alkaline environment, alkaline substances such as hydroxyl groups may react with polyoctazaneiminobiguanidine hydrazone. The nucleophilicity of the hydroxyl group may prompt it to attack atoms with certain positive electricity in the molecule of the substance, such as carbon atoms. This nucleophilic substitution or addition reaction, or changes the molecular skeleton, impairs the stability. The stronger the alkalinity, the more significant the reaction trend may be, and the stability will also decrease significantly.
In an oxidizing environment, strong oxidants may increase the valence of certain elements of polyoctazaneiminobiguanidine hydrazone. For example, if nitrogen is oxidized, its chemical properties and electronic structure change, or the intermolecular forces change, destroying the original stable structure, and the stability is also affected.
On the contrary, in the reducing environment, the reducing agent or electrons are given to change the electronic state of the molecule. If there are groups in the molecule that are easy to obtain electrons, after accepting electrons, the molecular activity changes, and the stability or changes accordingly.
In addition, physical environmental factors such as temperature and light should not be underestimated. When the temperature increases, the thermal motion of the molecule intensifies, and the collision frequency and energy between molecules increase. If the energy reaches a certain level, it is enough to break some chemical bonds of polyoctaazinobiguanidine hydrazone, resulting in a decrease in stability. Light or induced luminescence chemical reaction, photons of a specific wavelength are absorbed by the molecule, causing the molecule to be in an excited state. The excited state has high molecular activity and is prone to chemical reactions, which affects its stability.
What are the usage methods and precautions of polyhexamethylene biguanidine hydrochloride?
Polyethylene glycol dimethyl ether is a common organic solvent and is used in many fields. Its use method and precautions are as follows:
Use method
1. ** Gas purification **: It is often used to remove acid gases such as carbon dioxide and hydrogen sulfide from natural gas and synthesis gas. In the absorption tower, the raw material gas containing acid gas is in reverse contact with the polyethylene glycol dimethyl ether solvent. The acid gas is absorbed by the solvent, and the purified gas is discharged from the top of the tower. For example, in a synthetic ammonia plant, using polyethylene glycol dimethyl ether as the solvent can effectively remove carbon dioxide from the synthesis gas and improve the production efficiency of synthetic ammonia.
2. ** Extraction separation **: Due to its good solubility and selectivity to some organic matter, it can be used for extraction and separation. If specific organic components are extracted from the mixture, effective separation can be achieved by selecting the appropriate type of polyethylene glycol dimethyl ether and extraction conditions. For example, bioactive substances such as antibiotics are extracted from the fermentation broth.
3. ** As a reaction medium **: Because of its relatively stable chemical properties and good solubility, it can act as a medium for organic synthesis reactions. Some organic reactions need to be carried out in a specific solvent environment. Polyethylene glycol dimethyl ether can meet some reaction requirements and promote the smooth progress of the reaction.
Precautions
1. ** Storage conditions **: Should be stored in a cool and ventilated warehouse, away from fire and heat sources. Avoid direct sunlight, because long-term heat or light may cause changes in solvent properties. At the same time, it should be sealed and stored to prevent the solvent from volatilizing and absorbing impurities such as moisture in the air, which will affect its use effect.
2. ** Toxicity and Protection **: Although the toxicity of polyethylene glycol dimethyl ether is relatively low, it is still necessary to pay attention to protection. Avoid direct contact with the skin and eyes. Wear appropriate protective gloves, protective glasses, etc. during operation. If you come into contact accidentally, you should immediately rinse with a lot of water and seek medical treatment if necessary. Good ventilation should be maintained in the place of use to prevent inhalation of solvent volatilized aerosols. If exposed in a poorly ventilated environment for a long time, it may cause irritation to the respiratory tract.
3. ** Compatibility with other substances **: Pay attention to its compatibility with the substances you come into contact with when using. Avoid mixing with strong oxidizing agents, strong acids, strong bases and other substances that may chemically react to prevent dangerous chemical reactions that affect production safety and product quality. For example, when using polyethylene glycol dimethyl ether for gas purification, ensure that there are no impurities in the feed gas that may react with it.