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Views: 12 Author: Site Editor Publish Time: 2022-11-19 Origin: Site
Calcium chloride is a salt that is made up of calcium and chlorine. It is a white crystalline solid that is highly soluble in water and is used in various applications, including deicing, food processing, medicine, and agriculture. Calcium chloride is often produced as a byproduct of the Solvay process, which is a method for producing sodium carbonate.
| Item | Calcium Chloride Dihydrate | Calcium Chloride Anhydrous |
| CAS | 10035-04-8 | 10043-52-4 |
| Chemical Formula | CaCl2.2H2O | CaCl2 |
| Purity as CaCl2 | 74%min | 94%min |
| Alkalinity as Ca(OH)2 | 0.2%min | 0.25%min |
| Total Alkali Chloride as (NaCl) | 5.0%min | 5.0%min |
| Water Insoluble | 0.15%min | 0.25%min |
| Fe | 0.006%min | 0.006%min |
| PH | 7.5-11.0 | |
| MgCl2 | 0.5%max | |
| CaSo4 | 0.05%max | |
| Appearance | White flake, powder and granule | White powder |
| Standard Package | 25kg/1000kg woven bags with PE liner inside | |
Calcium chloride is a chemical compound represented by the formula CaCl2. It consists of one calcium ion (Ca2+) and two chloride ions (Cl-). The compound is highly hygroscopic, meaning it readily absorbs moisture from the surrounding environment. In its solid form, calcium chloride appears as a white, crystalline substance.
Calcium chloride is primarily produced as a byproduct of the Solvay process, which involves the production of soda ash (sodium carbonate). It is also obtained through the neutralization of hydrochloric acid with calcium carbonate or calcium hydroxide.
Calcium chloride exhibits several notable physical properties, including:
High water solubility: Calcium chloride readily dissolves in water, forming a clear and colorless solution.
Hygroscopic nature: The compound has a strong affinity for water, making it useful as a desiccant.
Exothermic dissolution: When calcium chloride dissolves in water, it releases heat.
From a chemical perspective, calcium chloride:
Reacts with alkali metal carbonates: It forms calcium carbonate and corresponding metal chlorides.
Behaves as a Lewis acid: It can accept electron pairs during chemical reactions.
One of the most common uses of calcium chloride is in de-icing and road maintenance during winter. It lowers the freezing point of water and prevents ice formation on roads and walkways.
Calcium chloride finds applications in the food and beverage industry as a firming agent and preservative, ensuring the quality and shelf life of various products.
In water treatment, calcium chloride helps to adjust the water's hardness, preventing scale formation in pipes and equipment.
The compound accelerates the setting time of concrete, making it a vital ingredient in construction projects with tight timelines.
Due to its hygroscopic nature, calcium chloride is used as a desiccant to remove moisture from the air in confined spaces.
Calcium chloride is used in intravenous therapy to treat calcium deficiencies and manage certain medical conditions.
In medical emergencies, it serves as an electrolyte replacement for patients experiencing electrolyte imbalances.
In laboratories and medical facilities, calcium chloride aids in tissue preservation during certain procedures.
Calcium chloride is used as a soil amendment to improve soil structure and promote plant growth.
It helps control dust on roads and agricultural fields, creating better working conditions.
In post-harvest storage, calcium chloride extends the shelf life of fruits and vegetables by reducing spoilage and decay.
Apart from its use in road de-icing, calcium chloride is employed for snow and ice removal in various settings.
In households, it acts as a moisture absorber, preventing mold and mildew growth in damp areas.
In swimming pools, calcium chloride is added to adjust water hardness levels for optimal pool maintenance.
When handling calcium chloride, proper storage and transportation practices are crucial to ensure safety and prevent accidents.
Workers handling the compound should use appropriate personal protective equipment, including gloves and eye protection.
Compared to other de-icing agents, calcium chloride is known for its rapid and efficient ice-melting capabilities.
While calcium chloride is generally considered less harmful to the environment than certain alternatives, proper usage and disposal are still essential.
In conclusion, calcium chloride is a multi-faceted chemical compound with a wide range of applications across industries and everyday life. Its unique properties, including hygroscopicity and exothermic dissolution, make it indispensable for de-icing, water treatment, and many other uses. However, proper handling and disposal are crucial to ensure both its effectiveness and minimal environmental impact. From road maintenance and food preservation to medical applications and agriculture, calcium chloride's versatility knows no bounds.
As with any chemical substance, safety precautions and responsible handling are paramount. Proper storage, transportation, and protective measures should always be observed to prevent accidents and ensure the well-being of those handling it.
In summary, calcium chloride is a valuable chemical compound that continues to play a significant role in various industries and applications. Its ability to address a wide array of needs, coupled with its relative ease of production, makes it an indispensable component of modern society.
1. Is Calcium Chloride Harmful to the Environment?
Calcium chloride is generally considered less harmful to the environment than some other de-icing agents. However, excessive use and improper disposal can still have adverse effects on ecosystems. It's essential to follow recommended application rates and responsible waste management practices.
2. Can Calcium Chloride be Ingested?
While calcium chloride has medical and pharmaceutical uses, it is essential to note that the compound should not be ingested without proper medical supervision. Ingestion of large amounts of calcium chloride can be harmful and cause adverse health effects.
3. Can Calcium Chloride be Used for Pool Maintenance?
Yes, calcium chloride is commonly used in swimming pools to adjust water hardness levels and prevent corrosion. However, its application should be done with care and according to manufacturer guidelines.
4. How does Calcium Chloride Compare to Sodium Chloride for De-icing?
Compared to sodium chloride (common table salt), calcium chloride has a lower freezing point and is more effective in melting ice at lower temperatures. It is often preferred for de-icing purposes, especially in colder climates.
5. Can I Create Calcium Chloride at Home?
Creating calcium chloride at home is not recommended due to safety concerns. The industrial production of calcium chloride involves specialized processes and should be left to professionals.
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