Chemical laboratory

Calcium Chloride

Versatile Hygroscopic Salt for De-icing and Industrial Applications

  • CAS 10043-52-4
  • Formula CaCl₂
  • Flash Pt N/A °C
  • Density 2.15 g/cm³
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Physical & Chemical Properties

Property Value Unit
Boiling point 1935 °C °C
Flash point N/A °C
Density 2.15 g/cm³ g/cm³
Solubility 74.5 g/100 mL (20 °C) -
Ph 8-10 (10% solution) -
Molecular weight 110.98 g/mol g/mol
Melting point 772 °C °C
Vapor pressure N/A mmHg
Autoignition temp N/A -
Appearance White crystalline solid -
Odor Odorless -
Vapor density N/A g/cm³

Overview

Calcium Chloride (CaCl₂) is a highly versatile, white crystalline inorganic salt with exceptional hygroscopic properties. With a molecular weight of 110.98 g/mol and CAS number 10043-52-4, this odorless compound exhibits remarkable water solubility at 74.5 g/100 mL at 20°C. Its ability to absorb moisture from the atmosphere and generate heat when dissolved makes it invaluable across multiple industries, from winter road maintenance to industrial manufacturing processes.

Key Applications

  • De-icing and Anti-icing: Calcium chloride effectively melts ice and snow at temperatures as low as -25°F, making it superior to sodium chloride for severe winter conditions. Its exothermic dissolution provides immediate melting action.
  • Dust Control: Applied to unpaved roads and construction sites, calcium chloride binds dust particles and maintains surface moisture, reducing airborne particulates and improving visibility.
  • Desiccant and Drying Agent: Its hygroscopic nature makes it ideal for moisture control in storage containers, shipping, and industrial drying processes.
  • Concrete Acceleration: As a concrete additive, calcium chloride accelerates curing time and increases early strength development, particularly beneficial in cold weather construction.

Safety & Handling

Calcium chloride is non-flammable with no flash point or autoignition temperature. However, proper handling procedures are essential due to its exothermic reaction with water. Personnel should wear appropriate PPE including safety glasses, gloves, and dust masks when handling dry material. Ensure adequate ventilation to minimize dust exposure. The material can cause skin and eye irritation upon direct contact, and its heat-generating properties require careful handling during dissolution.

Storage & Shelf Life

Store calcium chloride in tightly sealed, moisture-proof containers in a cool, dry location. The material should be kept away from metals, as it can accelerate corrosion in humid conditions. Proper storage containers include lined drums or moisture-barrier bags within outer containers. When stored correctly, calcium chloride maintains its effectiveness indefinitely. Keep separate from acids and bases to prevent unwanted reactions.

Why Alliance Chemical

Alliance Chemical provides reliable Calcium Chloride supply with same-day shipping from our Taylor, Texas facility. We offer flexible delivery options including UPS, LTL, and FTL shipments to meet your project timelines. Every order includes comprehensive Safety Data Sheets (SDS) and Certificate of Analysis (COA) documentation, ensuring you receive consistent, high-quality material that meets your specifications.

Shipping & Availability

Parcel Shipping

UPS Ground supports pints, quarts, and most 1-gallon packages nationwide.

LTL Freight

5-gallon pails, drums, and totes move via LTL carriers such as ABF Freight, SEFL, Saia, and XPO.

Full Truckload

FTL available for palletized bulk orders. Competitive freight rates.

Local Pickup

Same-day pickup at our Taylor, TX warehouse for Texas customers.

SDS, COA, and TDS available for every product • Same-day shipping on orders before 1 PM CT

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Available Sizes

Calcium Chloride - 1 Pack (2 lbs.)

1 Pack (2 lbs.)

$10.73

 Calcium Chloride - 1 Pack (5 lbs.)

1 Pack (5 lbs.)

$12.84

 Calcium Chloride - 1 Bag (50 lbs.)

1 Bag (50 lbs.)

$94.12
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Frequently Asked Questions

What is calcium chloride (CAS 10043-52-4) and what is it used for in industry and laboratories?
Calcium chloride (CaCl2, CAS 10043-52-4, molar mass 110.98 g/mol) is a white, highly hygroscopic crystalline salt available as anhydrous, dihydrate, flakes, pellets or solutions. It is widely used industrially for de-icing, dust control, concrete set acceleration, brine production and as a drying agent, and in laboratories as a reagent and for preparing controlled concentration solutions.
How should calcium chloride be stored and what is its typical shelf life?
Store calcium chloride in a cool, dry, well‑sealed container away from moisture and incompatible materials because it is highly hygroscopic and will cake or deliquesce. When kept unopened and dry, typical shelf life is 1–3 years depending on grade and packaging; consult the supplier COA/SDS for batch-specific recommendations.
Is calcium chloride hazardous and what personal protective equipment (PPE) should be used?
Calcium chloride can irritate skin, eyes and respiratory tract and may generate heat when dissolved; avoid dust and contact. Use chemical-resistant gloves, safety goggles, protective clothing and a dust mask or respirator for powders, and follow the product SDS for first aid and spill response.
How do anhydrous, dihydrate and brine concentrations of calcium chloride differ and which should I choose?
Anhydrous CaCl2 contains the highest active content per weight and is preferred when maximum dry strength is needed; dihydrate contains chemically bound water and is less concentrated per mass. Liquid brines are sold to specified weight‑percent concentrations and are chosen for applications like de‑icing or industrial process control where freezing point depression or specific molarity is required.
What documentation is available for calcium chloride deliveries?
Suppliers typically provide Safety Data Sheets (SDS), Technical Data Sheets (TDS), Certificates of Analysis (COA) for lot purity and impurity levels, and regulatory declarations (e.g., REACH) on request. Additional documentation such as MSDS, material certificates or shipping papers can be supplied for compliance and quality audits.
How is calcium chloride packaged and shipped?
Calcium chloride is commonly packaged in polyethylene‑lined paper sacks, multi‑wall bags, drums, super sacks (FIBCs) or shipped as bulk liquid brine in tankers. It is generally shipped as a non‑hazardous solid, but transportation classification and packaging may vary by grade and local regulations, so check with your shipper and supplier.
Which materials are compatible with calcium chloride and which should be avoided?
Calcium chloride is typically compatible with plastics such as HDPE, polypropylene and PVC and with certain stainless steels (e.g., 316) when clean and properly handled. It can accelerate corrosion of mild steel, galvanized surfaces and some aluminum alloys, so test compatibility and consider corrosion inhibitors or protective linings for metal equipment.
What are the key technical specifications to check when selecting calcium chloride?
Key specifications include form (anhydrous vs. dihydrate), physical form (pellets, flakes, powder, brine), assay/purity grade, major impurities (e.g., NaCl, Mg salts), moisture content and particle size. Also verify CAS 10043-52-4, molar mass 110.98 g/mol and request a Certificate of Analysis for batch-specific values.
Which industries and applications commonly use calcium chloride?
Common industries include construction (concrete acceleration and curing control), oil & gas (well brines and completion fluids), road maintenance (de‑icing and dust suppression), water treatment, chemical manufacturing and laboratories (desiccant and reagent uses). Its strong hygroscopic and freezing‑point‑depressing properties make it useful across many industrial processes.
How can I purchase calcium chloride and what packaging and purity options are typically available?
Calcium chloride is available from chemical distributors in lab, technical and industrial grades with packaging from 1 kg lab bottles up to 25 kg bags, 1 metric ton bulk bags or bulk tankers for brine. Contact suppliers for pricing, lead times, sample availability, custom solution concentrations and to obtain SDS/COA prior to purchase.

Documentation & Downloads

Safety Data Sheet
SDS / MSDS
Request COA
Certificate of Analysis
Technical Data Sheet (TDS)
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