Calcium chloride is a highly hygroscopic inorganic chemical raw material that offers multiple functions, including efficient drying, environmentally friendly snow melting, freeze protection in construction, and refrigeration as a cooling medium. It is widely used across various industrial sectors and boasts excellent performance while being compliant and safe.

Calcium Chloride 94%

Product Overview

Anhydrous calcium chloride is a white, porous granular or fused mass with strong hygroscopic properties. As an important inorganic chemical raw material and highly efficient desiccant, it plays a key role in numerous industrial fields—such as drying and dehydration, environmentally friendly snow melting, oil drilling, construction freeze protection, and refrigeration—thanks to its unique physicochemical characteristics. It not only boasts exceptional moisture-absorbing and drying capabilities but also exhibits special features like exothermic dissolution and freezing-point depression, meeting the diverse needs of various applications. Moreover, the product is compliant and safe, meeting stringent industry standards, making it both practical and economical.

Technical Principle

The core technical principle of anhydrous calcium chloride (chemical formula CaCl₂) is based on its distinctive physicochemical properties. First, its strong hygroscopicity enables it to efficiently absorb moisture from the environment, with a dew point as low as -40°C and a moisture absorption capacity reaching up to 300% of its own weight. Its drying efficiency is approximately eight times that of silica gel, making it an ideal choice for various drying and dehydration scenarios. Second, its exothermic dissolution effect (ΔH = -82.8 kJ/mol) releases substantial heat during dissolution, which is highly valuable for road de-icing and self-heating materials. Third, its freezing-point depression property lowers the freezing point of a 20% aqueous solution to as low as -35°C, with a snow-melting speed three times faster than salt, allowing it to rapidly melt snow and ice even in low-temperature conditions. Meanwhile, aqueous solutions of anhydrous calcium chloride serve as crucial refrigerants, widely used in freezing and ice-making industries to effectively transfer heat and control temperature.

Performance Parameters

1. Appearance and Solubility: White granules, flakes, powder, or porous fused masses; strongly hygroscopic, readily soluble in water (releasing significant heat) and ethanol. Relative density (d154) is 2.152, melting point 772°C, boiling point >1600°C, low toxicity.
2. Purity Grades: Industrial-grade anhydrous calcium chloride is available in various specifications, including 92%, 94%, 95%, and 98%; analytical grade has a purity ≥96.0%. Product quality complies with industry standards such as HG/T 5349-2018.
3. Key Impurity Control (Analytical Grade): Sulfate (SO₄) ≤0.02%, nitrate (NO₃) ≤0.005%, phosphate (PO₄) ≤0.001%, arsenic (As) ≤0.0003%, heavy metals (expressed as Pb) ≤0.001%, sodium (Na) ≤0.1%, magnesium (Mg) ≤0.1%. pH value (50 g/L, 25°C) is 8.0–10.0, neutral to slightly alkaline.
4. Morphological Advantages: Granular anhydrous calcium chloride offers excellent flowability, high particle strength, and minimal dust generation, facilitating handling, transportation, and metering. Compared to traditional flake or block forms, it better suits automated production line requirements.

Core Advantages

1. Outstanding Drying Efficiency: With strong moisture-absorbing power and rapid drying speed, anhydrous calcium chloride can absorb up to 300% of its weight in moisture, achieving about eight times the drying efficiency of silica gel. Its dew point can reach -40°C, offering far superior cost-effectiveness compared to molecular sieves—at just one-fifth the cost, it delivers more efficient drying results.
2. Versatile Product Forms: Available in flake, granular, and powdered forms, with purity levels ranging from 92% to 98%, catering to diverse application needs. Granular products, in particular, exhibit good flowability, minimal dust, and ease of use in automated production lines, enhancing operational convenience and precision.
3. Environmental Friendliness and Safety: Non-toxic (compliant with FDA 21CFR §184.1193), biodegradable at over 98%, free of heavy metal residues. As an eco-friendly product, it can replace conventional chemicals harmful to the environment, helping customers meet environmental regulations and avoid compliance risks.
4. Supply and Technical Assurance: Weifang Jiangchang Chemical operates a facility spanning over 8,000 square meters, equipped with anti-clogging pelletizing machines and easy-to-clean dryers, among other utility model patents. The company’s robust production technology ensures batch stability and continuous supply of anhydrous calcium chloride products. Recognized as a national-level science-and-tech SME, it holds multiple patents and software copyrights, demonstrating strong R&D capabilities.

Core Functions

1. Efficient Drying Function: Its strong hygroscopicity makes it an ideal desiccant and dehydrating agent for industrial gases and organic liquids. It can be used to dry nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide, and other gases, as well as serve as a dehydrating agent in the production of alcohols, esters, ethers, and acrylic resins. It is also suitable for drying pharmaceuticals and organic chemical liquids, and for controlling humidity in wardrobes, warehouses, and shipping containers. Note that it should not be used to dry ethanol or ammonia, as these substances react with calcium chloride to form CaCl₂·4C₂H₅OH and CaCl₂·8NH₃.
2. Snow-Melting and Ice-Removing Function: Effectively lowers the freezing point; a 20% aqueous solution can reduce the freezing point to -35°C, melting snow and ice three times faster than salt, while continuously inhibiting freezing for up to 72 hours. It can replace traditional chloride-based de-icers on airport runways, highways, bridges, and other areas, using 30% less per unit area than salt and efficiently addressing winter road snow and ice issues.
3. Freeze-Protection and Early-Strength Function: As a concrete early-strength agent, it can accelerate initial setting time by 40% and increase compressive strength by 50% within 24 hours at -10°C. Used as a building freeze-protection agent, it enhances mortar’s cold resistance, improving performance in low-temperature construction and resolving difficulties associated with concrete work in cold environments.
4. Refrigeration and Cold-Storage Function: Aqueous solutions of calcium chloride are vital refrigerants for chillers and ice-making machines, and can also serve as calcium salt additives in lithium bromide refrigeration units, boosting energy efficiency and widely applied in refrigeration and cold-chain sectors.
5. Dust-Reduction and Dust-Prevention Function: When formulated into a 30% solution and sprayed, it achieves a dust settling rate exceeding 90%, making it suitable for dust control on roads, highways, parking lots, airports, mines, and other venues, effectively reducing dust pollution.

Target Customer Groups

1. Chemical and Pharmaceutical Enterprises: Manufacturers of chemicals and pharmaceuticals requiring desiccants and dehydrating agents for gases and organic liquids can leverage the efficient drying performance of anhydrous calcium chloride to ensure product quality and stable production processes.
2. Oil Drilling and Extraction Companies: Oilfield service providers dealing with drilling fluids, completion fluids, and petrochemical dehydration solutions can rely on anhydrous calcium chloride to stabilize fluid performance, enhance completion quality, and improve drilling efficiency.
3. Municipal and Transportation Authorities: Winter snow-removal agencies responsible for highways, airports, and urban roads can utilize anhydrous calcium chloride as a core component of efficient, environmentally friendly de-icers, quickly melting snow and ice while ensuring road safety.
4. Construction and Building Materials Industry: Construction firms employing calcium chloride as a concrete early-strength agent or building freeze-protection agent can improve low-temperature construction performance, accelerate project timelines, and elevate overall construction quality.
5. Refrigeration and Cold-Chain Enterprises: Users needing refrigeration media for chillers or anti-freeze solutions for cold storage facilities can benefit from aqueous solutions of anhydrous calcium chloride as highly efficient cooling agents, satisfying their refrigeration and temperature-control needs.
6. Environmental and Mining Enterprises: Environmental service providers and mining companies engaged in road dust suppression, mine dust prevention, port fog elimination, and similar tasks can effectively reduce dust pollution and improve working conditions.

Application Scenarios

1. Drying and Dehydration Field: Used to dry industrial gases such as nitrogen, oxygen, hydrogen, hydrogen chloride, and sulfur dioxide, removing moisture to ensure gas purity; serves as a dehydrating agent during the production of alcohols, esters, ethers, and acrylic resins, promoting smooth chemical reactions; employed for drying pharmaceuticals and organic chemical liquids to prevent moisture-related spoilage; and can also be placed in wardrobes, warehouses, and shipping containers to control humidity and protect materials from dampness and rust.
2. Environmentally Friendly Snow-Melting and Ice-Removing Field: Applied on airport runways, highways, bridges, and other critical transportation areas, replacing traditional chloride-based de-icers. Even in temperatures as low as -35°C, it works swiftly, uses 30% less per unit area than salt, and continues to inhibit freezing for 72 hours, effectively ensuring smooth winter traffic.
3. Oil Drilling Field: Used as an additive in drilling fluids and completion fluids, as well as in petrochemical dehydration solutions, stabilizing fluid performance, preventing fluctuations under complex geological conditions, and enhancing drilling efficiency and completion quality.
4. Construction and Civil Engineering Field: Added to concrete as an early-strength agent, accelerating initial setting time by 40% and increasing compressive strength by 50% within 24 hours at -10°C, thereby speeding up construction progress; also used as a building freeze-protection agent, boosting mortar’s cold resistance and ensuring quality and safety in low-temperature construction.
5. Refrigeration and Air Conditioning Field: Aqueous solutions of calcium chloride serve as essential refrigerants for chillers and ice-making machines, enabling heat transfer and temperature control; in lithium bromide refrigeration units, they act as calcium salt additives, improving energy efficiency and reducing consumption.
6. Other Industrial Scenarios: In mines, spraying a 30% calcium chloride solution suppresses dust, achieving a dust settling rate exceeding 90% and improving mine working conditions; used in waste paper processing to enhance deinking effects; acts as a precipitant for color pigments, aiding pigment production; and in aluminum-magnesium metallurgy, serves as a protective and refining agent, elevating metallurgical product quality.

Solving Core Pain Points

1. Material Spoilage and Equipment Rust Caused by Humid Environments: Pharmaceuticals, electronic components, and metal products are prone to moisture-induced spoilage or rust in humid conditions. Anhydrous calcium chloride, as an efficient desiccant with outstanding moisture-absorbing capabilities and a dew point as low as -40°C, effectively controls humidity in storage and transportation environments, preventing damage to materials and equipment due to moisture and reducing loss risks.
2. Winter Road Snow and Ice Affecting Traffic: Traditional de-icers either perform poorly or are overly corrosive. Anhydrous calcium chloride melts snow and ice three times faster than salt, works at temperatures as low as -35°C, uses 30% less per unit area than salt, and continuously inhibits freezing for 72 hours, fundamentally improving snow-removal efficiency, reducing traffic risks, and ensuring road safety.
3. Difficulties in Concrete Construction at Low Temperatures: Under low-temperature conditions, concrete hydration reactions slow down, impacting project schedules and quality. Anhydrous calcium chloride, as an early-strength agent, accelerates initial setting time by 40% and increases compressive strength by 50% within 24 hours at -10°C, effectively improving low-temperature construction performance and ensuring smooth progress in cold environments.
4. Unstable Drilling Fluid Performance in Oil Drilling: Drilling fluids often experience performance fluctuations under complex geological conditions, affecting drilling efficiency. Anhydrous calcium chloride, used as an additive in drilling fluids, stabilizes fluid performance, enhances completion quality, and ensures efficient drilling operations.

Core Value

1. Production Value Brought by High Efficiency: According to industry-standard testing, Weifang Jiangchang Chemical’s anhydrous calcium chloride products achieve purity levels ranging from 92% to 98%, meeting high-purity industrial standards. With a moisture absorption capacity reaching 300% of its own weight, a dew point as low as -40°C, and a drying efficiency approximately eight times that of silica gel, it can swiftly and efficiently complete drying and dehydration tasks, boosting production efficiency. A 20% aqueous solution lowers the freezing point to -35°C, melting snow and ice three times faster than salt, using 30% less per unit area, and continuously inhibiting freezing for 72 hours, effectively solving road snow and ice problems. As a concrete early-strength agent, it accelerates initial setting time by 40% and increases compressive strength by 50% within 24 hours at -10°C, with an addition amount equivalent to only 1%-2% of cement weight, delivering remarkable improvements in construction performance with minimal input.
2. Compliance and Supply Assurance Value: Compliant with industry standards such as HG/T 5349-2018, Weifang Jiangchang Chemical is recognized as a national-level science-and-tech SME, holding multiple utility model patents and software copyrights. With a facility spanning over 8,000 square meters, its robust production technology and patent reserves provide solid guarantees for batch stability and continuous supply of anhydrous calcium chloride products, ensuring customers receive consistent, qualified goods.
3. Economic and Environmental Value: The cost of moisture absorption by anhydrous calcium chloride is only one-fifth that of molecular sieves, and its usage as a de-icer requires 50% less urea than traditional methods. Overall production costs remain controllable and economically favorable, helping customers reduce procurement and maintenance expenses. The product is non-toxic, biodegradable at over 98%, free of heavy metal residues, and reusable after being dried at 120°C, aligning with circular economy and sustainable development principles. This helps customers meet increasingly stringent environmental regulations and avoid compliance risks.
4. Multifunctional Integrated Solution Value: Widely applicable across drying and dehydration, environmentally friendly snow melting, oil drilling, construction freeze protection, refrigeration, and dust suppression, providing customers with a multifunctional, integrated raw material solution. Customers no longer need to procure multiple separate ingredients for different purposes, effectively lowering overall procurement and management costs.

Common Questions FAQ

Q1: Can anhydrous calcium chloride be used to dry all gases?
A: No, it cannot be used to dry ethanol or ammonia, as these substances react with calcium chloride to form CaCl₂·4C₂H₅OH and CaCl₂·8NH₃, compromising drying effectiveness and potentially generating harmful byproducts. It is suitable for drying most industrial gases, including nitrogen, oxygen, hydrogen, hydrogen chloride, and sulfur dioxide.
Q2: What advantages does granular anhydrous calcium chloride have over other forms?
A: Granular anhydrous calcium chloride excels in flowability, particle strength, and minimal dust generation, making it easier to handle, transport, and measure. It better meets the operational demands of automated production lines, enhancing convenience and precision in manufacturing processes while reducing dust pollution.
Q3: How does anhydrous calcium chloride compare to traditional salt as a de-icer?
A: A 20% aqueous solution of anhydrous calcium chloride lowers the freezing point to -35°C, melts snow and ice three times faster than salt, uses 30% less per unit area, and continuously inhibits freezing for 72 hours. It performs better in lower-temperature environments, offering higher de-icing efficiency, using less material, and causing less environmental impact.
Q4: What is the recommended dosage of anhydrous calcium chloride as a concrete early-strength agent?
A: As a concrete early-strength agent, adding anhydrous calcium chloride at only 1%-2% of cement weight can accelerate initial setting time by 40% and increase compressive strength by 50% within 24 hours at -10°C. Despite the small addition amount, its effects are significant.
Q5: Can anhydrous calcium chloride be reused?
A: Yes, after being dried at 120°C to remove absorbed moisture and restore its hygroscopic capacity, it can be reused, aligning with circular economy and sustainable development principles and reducing usage costs.