[Chemical Knowledge]：The nature, use, upstream and downstream raw materials, storage methods of calcium chloride dihydrate, is calcium chloride dihydrate dangerous goods?

Properties of calcium chloride dihydrate

Calcium chloride dihydrate (CaCl2 · 2H2O) is a white or colorless crystal with high hygroscopicity and solubility. Its chemical properties are stable, but easy to deliquesce in air. It has a melting point of 176°C and a density of 1.85g/cm³. Due to its hygroscopic properties, calcium chloride dihydrate is used as a desiccant in many applications. Its aqueous solution is neutral and has strong conductivity, which makes it also have certain applications in the field of electrolysis and electrochemistry.

Use of calcium chloride dihydrate

Calcium chloride dihydrate is widely used in industry and daily life. In the food industry, it is used as a calcium supplement and food additive to improve the stability and taste of food. In oil drilling, calcium chloride dihydrate is used as drilling fluid and completion fluid, which can effectively control the wellbore stability. Calcium chloride dihydrate is also widely used in road deicing and snow melting, because it can quickly lower the freezing point, play a role in melting snow and antifreeze. In the construction industry, it is used as an early strength agent and antifreeze for concrete. In chemical production, calcium chloride dihydrate is used as a desiccant, coolant and dehydrating agent to ensure the smooth progress of the production process.

Upstream raw materials

The main raw materials for the production of calcium chloride dihydrate include hydrochloric acid (HCl) and limestone (CaCO3). By reacting limestone with hydrochloric acid, calcium chloride (CaCl2) and carbon dioxide (CO2) are formed. The reaction equation is:

[\text{CaCO} 3 2\text{HCl} \rightarrow \text{CaCl} 2 \text{CO} 2 \text{H} 2\text{O}]

this process is simple and efficient, the generated calcium chloride solution by evaporation, cooling crystallization, you can get calcium chloride dihydrate. As common industrial raw materials, hydrochloric acid and limestone are easy to obtain and low cost, which provide reliable upstream guarantee for the production of calcium chloride dihydrate.

Downstream Products and Applications

Calcium chloride dihydrate has a wide range of downstream products and applications, covering multiple industries. In agriculture, it is used as plant calcium fertilizer, which can effectively prevent and correct the calcium deficiency of crops. In the water treatment industry, calcium chloride dihydrate is used to soften water quality and remove impurities from water. In the field of medicine, calcium chloride dihydrate is used as a calcium supplement and anti-allergic drug raw material for the treatment of various calcium deficiencies and allergic reactions. In addition, calcium chloride dihydrate is also used in leather, printing and dyeing, paper and other industries, as a variety of chemical reactions of additives and catalysts.

storage method

Due to the high hygroscopicity of calcium chloride dihydrate, special care should be taken to prevent moisture during storage. Generally sealed packaging, common packaging materials include plastic barrels, woven bags lined with plastic bags. The storage environment should be dry and ventilated to avoid prolonged contact with air. Keep away from flammable and explosive materials to prevent safety accidents caused by high temperature or contact with acidic substances. During transportation, it is necessary to prevent the packaging from being damaged to avoid the moisture absorption and deliquescence of calcium chloride dihydrate exposed to the air.

Market Demand and Development Prospects

The market demand for calcium chloride dihydrate is stable and growing, especially in cold areas, where road deicing and snowmelt are in high demand. With global climate change and frequent extreme weather events, the demand for calcium chloride dihydrate is also on the rise. The demand for high-purity calcium chloride dihydrate is also increasing in the food and pharmaceutical industries. With the increasing awareness of environmental protection, the application of calcium chloride dihydrate in water treatment and environmental protection has broad prospects. The progress of science and technology and the improvement of production process will further promote the development of calcium chloride dihydrate market and enhance its application effect and economic value in various fields.

Competitive landscape and challenges

The competitive landscape of the calcium chloride dihydrate industry is fierce, mainly concentrated in production costs, product quality and market services. Large-scale production enterprises occupy a dominant position in the market by virtue of scale advantages and technological advantages, but small and medium-sized enterprises can also find their own living space through differentiated services and flexible market strategies. Faced with challenges such as fluctuations in raw material prices and increasingly stringent environmental regulations, companies need to strengthen technological innovation, improve production efficiency, reduce costs, and focus on environmental protection and sustainable development to respond to market changes and competitive pressures.

Summary

As an important chemical product, calcium chloride dihydrate has a wide range of applications and good market prospects. The production process is simple, the raw materials are easy to obtain, and the application effect is remarkable. With the technological progress and the changing market demand, the application field of calcium chloride dihydrate will be further expanded, and the market scale will continue to grow. Enterprises should seize the opportunity to continuously improve product competitiveness and market share through technological innovation and management optimization to achieve sustainable development.