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Difference between calcium hypochlorite and bleaching powder

1. What is Calcium hypochlorite? The main components of bleaching powder commonly used in aquaculture are calcium chloride and calcium hypochlorite. Among them: the effective component of bleaching powder that plays a role in disinfection is calcium hypochlorite [ca (CLO) 2], and calcium chloride is a chemical substance that will obviously absorb moisture. Due to the existence of calcium chloride in bleaching powder, the available chlorine in bleaching powder is easily affected and reduced. Because calcium hypochlorite is the essence of bleaching powder, calcium hypochlorite is also called bleaching powder essence in the market. Compared with bleaching powder, it is pure calcium hypochlorite essence and does not contain calcium chloride and other hygroscopic substances. The chlorine content is about 68%, which is significantly higher than the effective chlorine content of the newly produced non damped bleaching powder. Generally, the disinfection dose is only 0.1~0.2ppm. In aquaculture and other industries that need disinfection and oxidation, disinfectants that dissolve in water and produce hypochlorite are generally referred to as chlorine containing disinfectants. The germicidal efficacy of chlorine containing disinfectants is closely related to the amount of effective chlorine they contain. The higher the effective chlorine, the stronger the disinfection and oxidation capacity. 2. Comparison of advantages and disadvantages between bleaching powder and calcium hypochlorite Advantages of bleach: It is cheap and has obvious effect on general pathogenic microorganisms. Disadvantages of bleach: Due to the strong water absorption of calcium chloride contained in bleaching powder, it is easy to decompose when exposed to light, water, heat, etc., and is not resistant to storage. Especially in humid areas, the available chlorine of bleaching powder will decrease exponentially in about a month. Even lead to the loss of proper disinfection effect. The principle of bleaching powder deterioration: Calcium chloride in bleaching powder absorbs water and makes calcium hypochlorite in bleaching powder generate hypochlorite.   3. Hypochlorous acid will decompose into hydrogen chloride and oxygen under light conditions, thus losing effective chlorine. Advantages of calcium hypochlorite: contains very little hygroscopic calcium chloride, so calcium hypochlorite is relatively stable and resistant to storage and transportation (which is very important to ensure the disinfection effect). Compared with bleaching powder, the available chlorine of calcium hypochlorite is stable and high, which has obvious effect on general pathogenic microorganisms. The amount of use in disinfection is small, which reduces the amount of labor. Disadvantages of calcium hypochlorite: Since calcium hypochlorite contains a large amount of effective chlorine, protective measures need to be taken during operation.
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Calcium hypochlorite Market Overview

Release time:2024-04--15
Market Overview It is estimated to reach USD 1,808.11 million by 2031, growing at a CAGR of 11.13% over the forecast period (2023–2031). Market growth is anticipated to be driven by the rising demand for calcium hypochlorite in the coming years, driven by the rising usage of hygiene products to prevent water-borne diseases like cholera and typhoid.   Calcium hypochlorite is an inorganic compound utilized as a component in chlorine powder and bleaching powder, among other applications. It undergoes gradual decomposition in humid air and emits a potent chlorine odor. Calcium hypochlorite overuse can be harmful and irritate the skin. It has extensive applications in the disinfection of swimming pools, water purification, and bleaching textiles and paper. Calcium hypochlorite must be stored away from organic materials such as cloth, wood, and petroleum products since it can cause an explosion or fire when reacted.   Calcium hypochlorite is mainly used to disinfect drinking water and public swimming pools. The surging usage of calcium hypochlorite in spas, hot tub water, and swimming pools is anticipated to positively impact the growth of the calcium hypochlorite market worldwide. It is used as an oxidizer for decontaminating mustard gas and as a pesticide for insects, especially caterpillars. Calcium hypochlorite is also used to kill bacteria in different food products. It is utilized to sanitize the surfaces of different equipment and utensils. In households, calcium hypochlorite is commonly used in algaecides, bathroom cleaners, herbicides, household disinfectant sprays, laundry detergents, etc.
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Pros of Calcium Hypochlorite

Release time:2024-04--09
Calcium hypochlorite is a white, concentrated chemical sold as a powder, as crystals and in tablets. All are used to disinfect and sanitize drinking water and swimming pool water. When combined with water, calcium hypochlorite releases oxygen and a high concentration of chlorine molecules. Chlorine is an effective way to kill bacterial and fungal populations in water sources, and, compared with other sources of chlorine for water purification, it is easier and safer to use. However, there are some downsides to be aware of in calcium hypochlorite use. Cost Effectiveness One of the primary benefits of calcium hypochlorite is that a relatively small amount of the chemical can successfully disinfect large amounts of water, making it one of the most cost-effective choices in water sanitation. According to, a site devoted to providing readers information about surviving outdoors and during emergency situations, a 1-lb. bag of calcium hypochlorite in granular form can treat up to 10,000 gallons of water. Ease of Use Although using chlorine as a water disinfectant is generally simple and efficient, calcium hypochlorite is preferred over the other common forms of chlorine water treatment–chlorine gas and liquid bleach (also known as sodium hypochlorite)–because it is more stable, requires less equipment to use and is easier to transport. Chlorine gas is highly effective but must be handled with extreme care because of its hazardous, corrosive nature. Liquid bleach is most useful when treating only small amounts of water. By contrast, calcium hypochlorite is safer to handle than chlorine gas and can be used on much larger volumes of water than bleach. Length of Storage Another benefit of calcium hypochlorite is that it can be stored for long periods of time without any of its disinfectant ability diminishing. Other forms of chlorine, such as liquid bleach, degrade in a matter of months. In order to be certain that your bleach has the optimal level of chlorine, a representative of Clorox says, you should change your supply of bleach every three months. Length of Storage Another benefit of calcium hypochlorite is that it can be stored for long periods of time without any of its disinfectant ability diminishing. Other forms of chlorine, such as liquid bleach, degrade in a matter of months. In order to be certain that your bleach has the optimal level of chlorine, a representative of Clorox says, you should change your supply of bleach every three months.  
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When to use Calcium Hypochlorite in a Pool ?

Release time:2024-04--01
When to use Calcium Hypochlorite in a Pool ? In the realm of pool maintenance, ensuring water safety and quality is paramount. One of the key elements in maintaining a pristine pool environment is the proper use of chemicals, with Calcium Hypochlorite emerging as a trusted ally for pool owners. In this comprehensive guide, we will explore the optimal times and methods for using calcium hypochlorite to maintain a safe and inviting swimming pool. Understanding Calcium Hypochlorite: Calcium hypochlorite is a powerful and versatile chemical compound commonly used as a disinfectant and sanitizer in swimming pools. It effectively eliminates harmful microorganisms, bacteria, and algae, thereby preventing waterborne illnesses and ensuring a crystal-clear swimming experience. When to Use Calcium Hypochlorite: Weekly Shock Treatment: Regular pool shock treatments are essential to break down accumulated organic matter, sweat, oils, and other contaminants that can lead to cloudy water and an unpleasant swimming environment. Experts recommend using calcium hypochlorite to shock the pool on a weekly basis, preferably in the evening when the sun’s UV rays are less intense. Opening the Pool: When the pool is reopened for the swimming season after a period of inactivity, it’s crucial to use calcium hypochlorite to shock the pool water. This will eliminate any bacteria or algae that might have proliferated during the pool’s downtime. After Heavy Usage or Rain: Following periods of heavy pool usage, such as pool parties or gatherings, it’s advisable to shock the pool with calcium hypochlorite to restore optimal chlorine levels and water clarity. Additionally, rainwater can dilute chlorine levels, making it necessary to shock the pool afterward. Algae Infestation: If your pool has been invaded by algae, calcium hypochlorite can be a potent tool for eradication. Algae can quickly turn a clear pool into a green mess, but a carefully calibrated shock treatment can help regain control.
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Unveiling the Multi-Faceted Applications of Calcium Hypochlorite

Release time:2024-03--25
In today's rapidly evolving world, the importance of effective disinfection and sanitation has never been more prominent. Among the plethora of disinfectants available, calcium hypochlorite stands out as a powerful and versatile solution. This chemical compound, commonly used as a disinfectant, Pool Cleaner, and even in disaster relief efforts, has earned its place as a crucial agent in various industries. In this article, we'll delve into the myriad uses of calcium hypochlorite, shedding light on its significance in today's health and safety landscape. 1. Pool Maintenance: Keeping Recreational Spaces Safe and Clean One of the most common applications of calcium hypochlorite is in swimming pool maintenance. Its ability to effectively kill harmful bacteria, viruses, and algae makes it an essential component of pool water treatment. Calcium hypochlorite releases chlorine into the water, ensuring that pools remain safe and inviting for swimmers. Its high chlorine content makes it a cost-effective choice for commercial and residential pool owners alike, helping to maintain crystal-clear water. 2. Water Purification: Safeguarding Communities In regions where access to clean drinking water is a challenge, calcium hypochlorite plays a pivotal role in water purification. Municipal water treatment facilities use it to disinfect drinking water, making it safe for consumption. By eradicating harmful microorganisms and pathogens, calcium hypochlorite contributes to improved public health, reducing the risk of waterborne diseases. 3. Disaster Relief: A Rapid Response Solution During natural disasters such as hurricanes, earthquakes, or floods, access to clean water can become severely limited. Calcium hypochlorite tablets are used to provide emergency water disinfection. A small tablet can purify a significant amount of water, making it a lifesaver in situations where clean water sources are scarce. Non-governmental organizations and disaster relief teams rely on calcium hypochlorite to ensure that affected communities have access to safe drinking water in times of crisis. 4. Medical Facilities: Maintaining Sterile Environments In healthcare settings, maintaining a sterile environment is paramount. Calcium hypochlorite is used to disinfect surfaces, equipment, and even medical waste. Its broad-spectrum disinfecting properties help healthcare professionals reduce the risk of infections, safeguarding both patients and staff. 5. Food Industry: Ensuring Safe Consumption The food industry relies on calcium hypochlorite for disinfection and sanitation purposes. From sanitizing food processing equipment to disinfecting fruits and vegetables, this compound helps ensure that the food we consume is safe and free from harmful pathogens. It plays a vital role in reducing foodborne illnesses and ensuring food safety standards are met. 6. Sanitization in Education: Protecting Students and Staff Schools and educational institutions are increasingly turning to calcium hypochlorite for sanitation. It helps prevent the spread of contagious diseases in crowded environments. By regularly disinfecting classrooms, hallways, and common areas, it contributes to a safer learning environment for students and educators. As we navigate the challenges of the modern world, Calcium Hypochlorite emerges as a versatile and indispensable tool in safeguarding public health, ensuring clean water access, and maintaining sanitary conditions across various industries. Its role in pool maintenance, disaster relief, healthcare, and more showcases its adaptability and efficacy. Calcium hypochlorite continues to be a crucial ally in our ongoing battle against diseases and contaminants, promising a safer and healthier future for all. To reap the full benefits of this remarkable chemical compound, it’s essential to handle it with care and follow recommended safety guidelines.
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Why Calcium Hypochlorite is a Preferred Method of Swimming Pool Sanitation

Release time:2024-03--18
Calcium hypochlorite, better known by its nickname of cal hypo, is one type of product commonly used to treat swimming pool water. It comes in various forms, such as granular or in tablets that look like hockey pucks. Because of its solid, concentrated form and ability to kill any number of pathogens while keeping water clean and sparkling, it is considered the most ideal product to choose when it comes to sanitizing swimming pools. Cal hypo’s solid form makes it is easy to transport and to store. It can be purchased in small bags that are easy for any homeowner to handle and use. It is inexpensive, fast-acting, and very strong. If it’s added correctly, it will not damage the pool or equipment. It is also used to shock pools, which means giving the pool a high dose of chlorine to quickly eliminate any build-up of combined chlorine and extra germs that may have manifested from a high bather load or rain storm. Cal hypo does not contain cyanuric acid, which is a chlorine stabilizer, so cal hypo’s ability to kill germs quickly is not affected by overstabilization that can slow it down. Too much cyanuric acid can also lead to algae blooms, because the chlorine can’t kill the algae as fast. On the flip side, cal hypo’s lack of cyanuric acid also means chlorine is burned off quickly in the sun, which cyanuric acid’s job is to protect from happening. However, cyanuric acid may be added separately to the pool to keep this from occurring. “It’s really hard to control your chlorine concentration with an ORP controller in the presence of cyanuric acid,” says Ellen Meyer, product safety and government affairs manager at Solenis. “It really helps not to have any cyanuric acid present.”   There are other methods of treating a pool, such as trichlor-s-triazinetrione, or trichlor for short. Trichlor is another popular product and is very similar to cal hypo in that it comes in tablets, is inexpensive, easy to transport, and has a high amount of chlorine. However, unlike cal hypo, it does have cyanuric acid to protect the chlorine from being worn away by the sun. Each tablet typically has about 50% cyanuric acid. Cyanuric acid doesn’t dissipate over time like chlorine, so after a while, your pool can end up with a high cyanuric acid level, which can only be lowered by partial draining and refilling. Trichlor also has a low pH, which can cause pipes to corrode. “Typically a lot of pool builders will tell you don’t ever put a trichlor tab in your skimmer because you can have damage to your downstream equipment,” Meyer says. “Cal hypo has a high pH, so even though you have a high concentration of chlorine, it doesn't corrode your heater or any of your other equipment if you put it in either a skimmer or feeder.” Sodium hypochlorite, also known as liquid bleach is another option, but it is only sold as a liquid which makes transporting difficult due to the weight. It is also extremely corrosive, so it must be handled with much more care than its solid counterparts. In addition, liquid bleach loses much of its strength in storage and at high temperatures. Cal hypo contributes calcium to the pool which can create scale in the presence of high pH and high carbonate concentrations. However, Meyer points out, scale can be removed with an acid wash or anti-scale agent. Unlike corrosion caused by trichlor, scale can be removed. The corrosion caused by the low pH of trichlor cannot be reversed.. “Once that copper's off of the heat exchanger, it's gone,” Meyer says. “You can't reverse that corrosion process. But scale, you can reverse it, you can clean the scale off.” Though there’s no one “perfect” pool solution out there, cal hypo tends to be the better option because of its ease of use, reliability, and lack of any real damage to equipment. 
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