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Composition and drying principle of calcium chloride desiccant

15 Jul,2024

Its main raw material is calcium chloride, which can chemically react water molecules with calcium chloride to absorb moisture from the surrounding environment and convert it into gel to achieve adsorption effect. The internal substance of calcium chloride desiccant is powder. If a child tears the package of calcium chloride desiccant, the calcium chloride powder inside is easy to enter the eyes, which will cause symptoms such as eyelid redness and swelling, white burns on cornea and conjunctiva. In mild cases, corneal leukoplakia will be caused after treatment, affecting vision, and in severe cases, blindness will be caused. At the same time, although calcium chloride can be used as food additives, calcium chloride desiccant is not edible. The packaging materials of calcium chloride desiccant are generally fixed. The inner layer is PET film + unidirectional breathable cloth or unidirectional breathable DuPont paper, and the outer layer is unidirectional breathable cloth, which can well prevent the leakage of calcium chloride desiccant. Calcium chloride desiccant becomes water after absorbing moisture. In fact, it is not pure water, but calcium chloride aqueous solution. If nothing else is added, it will flow out. Therefore, calcium chloride desiccant needs to add starch, so calcium chloride desiccant will turn into yellow condensate after moisture absorption.

What are the main components of snow melting agent and composite snow melting agent?

15 Jul,2024

RR snow melting agent When winter comes, we often see that after heavy snow, workers use spray trucks or manually use shovels to sprinkle a white substance, which is called snow melting agent or composite snow melting agent. So what are the main ingredients? There are two main types of snow melting agents on the market. One is chlorine salt, such as magnesium chloride tablets in magnesium chloride hexahydrate, calcium chloride particles in calcium chloride particles dihydrate, sodium chloride, etc., which can be used directly or as a composite snow melting agent. The other is organic snow melting agent, such as calcium magnesium acetate, which is the so-called snow melting agent. The difference between the two is that the former has the advantage of high cost performance, more manufacturers and easier to find. The disadvantage is that if the dosage cannot be controlled well, although the snow melting effect is fast, it will also cause certain corrosion to vegetation and buildings. Therefore, corrosion inhibitor is added to the composite snow melting agent to reduce the effect of corrosion. The advantage of this method is that it is more than ten times more expensive than the ordinary one, but it is more suitable for any place without corrosion. The composition of composite snow melting agent is mostly magnesium chloride, calcium chloride and sodium chloride in a certain proportion plus corrosion inhibitor, which is generally 4:3:2:1, or with different proportions according to different requirements, mainly according to the non freezing temperature and snow melting efficiency. Through the introduction from our manufacturer, do you understand?

What are the efficacy and functions of industrial soda ash?

15 Jul,2024

Large collection of uses of calcium chloride

13 May,2022

Application of calcium chloride desiccant Granular anhydrous calcium chloride is usually used as a desiccant to fill the drying tube. The giant algae (or seaweed ash) dried with calcium chloride can be used in the production of soda ash. Some household dehumidifiers use calcium chloride to absorb moisture from the air. Calcium chloride can also be used as desiccant or dehydrating agent for gases and organic liquids. Because calcium chloride is neutral, it can dry acid, alkali and organic liquids, and can also produce a small amount of gases in the laboratory, such as nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide, carbon dioxide and nitrogen dioxide. However, it cannot be used to dry ethanol and ammonia, because ethanol and ammonia will react with calcium chloride to produce alcohol compound CaCl2 4c2h5oh and ammonia compound CaCl2 8NH3。 Anhydrous calcium chloride can also be used as the air hygroscopic agent of the writer's product. Anhydrous calcium chloride is approved by FDA for dressing and first aid, and its function is to ensure the dryness of the wound. The anhydrous calcium chloride is paved on the gravel pavement, and the humidity of anhydrous calcium chloride on the pavement is controlled. Calcium chloride can be used in deicing agent and cooling bath Laying calcium chloride hydrate on calcium chloride can prevent icing, deicing and snow melting, but the melted salt water will damage the soil and vegetation along the way and worsen the pavement concrete. Calcium chloride solution can also be mixed with dry ice to prepare low-temperature cooling bath. Add dry ice sticks to the brine solution in batches until ice appears in the system. The stable temperature of cooling bath maintained by different kinds and concentrations of salt solutions will be different. Generally speaking, calcium chloride is commonly used as salt raw material to obtain the required stable temperature by adjusting the concentration, not only because calcium chloride is cheap and easy to obtain, but also because the eutectic temperature of calcium chloride solution (i.e. the temperature when all solutions condense to form granular ice salt particles) is quite low, up to - 51.0 ℃, so the adjustable temperature range is from 0 ℃ to - 51 ℃. The utility model can be realized in a Dewar bottle, and can also be cooled with an ordinary plastic container while the volume of the Dewar bottle is limited. Calcium chloride can be used as a source of calcium ions Adding calcium chloride into the swimming pool water can make the swimming pool water become a pH buffer, improve the hardness of the swimming pool water, and reduce the erosion of the swimming pool wall concrete. According to le Chatelier's principle and the same ion effect, increasing the concentration of calcium ion in swimming pool water can slow down the dissolution of essential calcium compounds in concrete structure. Adding calcium chloride to the water of marine aquarium can increase the calcium content available to organisms in the water, and soft animals and coelenterates cultured in aquarium can use it to form calcium carbonate shell. Although calcium hydroxide or calcium reactor can achieve the same purpose, in contrast, the addition of calcium chloride has the least effect on the pH of water. other aspects Hydrated calcium chloride solid can be used as phase change energy storage material. For example, calcium chloride hexahydrate can be used for industrial waste heat recovery and absorption and utilization of solar radiation heat. Because it can be used as medium and low temperature (i.e. the heat absorbed by the material in the process from solid phase to liquid phase at the same temperature) to reach 190kj / mol, it can be used for industrial waste heat recovery and absorption and utilization of solar radiation heat at medium and low temperature. However, it is similar to all inorganic hydrated salt phase change materials and has serious supercooling problem (undercooling degree reaches 20 ° C), Nuclear agents need to be added to overcome. Calcium chloride in concrete helps to accelerate the initial setting, but chloride ions can lead to reinforcement corrosion, so calcium chloride cannot be used in reinforced concrete. Because of its hygroscopicity, anhydrous calcium chloride can provide a certain degree of moisture for concrete. Calcium chloride is also an additive in plastics and fire extinguishers. It is used as a filter aid in wastewater treatment and as an additive in blast furnace to control the aggregation and bonding of raw materials, so as to avoid furnace charge settlement and as a binder in fabric.

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Shandong Shangshan Chemical Co., Ltd

Company Address: Building A, Lijing Mingcheng, Luocheng Street, Shouguang City, Shandong Province, China
Contact: Manager Hou
Contact number: +86-13656461910

Email: info@sdsschem.com

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