Calcium Chloride Dihydrate
  • Calcium-Chloride

Calcium Chloride Dihydrate



Calcium chloride dihydrate is a chemical compound with the formula CaCl2·2H2O. It is a hydrated form of calcium chloride, which means it contains water molecules within its crystal structure. Calcium chloride dihydrate is a white, crystalline solid that is highly soluble in water. Here's an introduction to this product:

Chemical Composition:

  • Calcium chloride dihydrate has the chemical formula CaCl2·2H2O, indicating that it contains one calcium ion (Ca²⁺), two chloride ions (Cl⁻), and two water molecules (H2O) per unit.

Physical Properties:

  • Appearance:White, crystalline solid.
  • Solubility:Highly soluble in water, and it releases heat when dissolved.
  • Density:Varies with temperature and concentration, but typically around 1.85 g/cm³.
  • Melting Point:Calcium chloride dihydrate does not have a sharp melting point but gradually loses its water content upon heating.

Test Report Of Pharmaceutical Grade Calcium Chloride Dihydrate Powder

NAMECalcium Chloride DihydratePRO. DATE2023-08-01
BATCH   NO.20230801PACKAGE25Kg/package
EXECUTIVE STANDARDChina Pharmacopoeia 2015 & USP35
AppearanceWhite crystalline powderConformQualified
CaCL2.2H2O,W%99.0- 103.0100.76Qualified
IdentificationA solution (1 in 10) responds to the tests for Ca+  and Cl-Qualified
Clariry and color of solutionComply with standardQualified
Magnesium and Alkali salts,mg≤5.03.9Qualified
Heavy metals,W%≤0.001<0.001Qualified
Iron,aluminum,and phosphateTo a solution (1 in 20) add 2 drops of 3 N hydrochloric acid
and 1 drop of "PP" TS. Then add ammonium
chloride–ammonium hydroxide TS, dropwise, until the
solution is faintly pink, add 2 drops in excess, and heat the
liquid to boiling: no turbidity or precipitate is produced.

Functions and Applications

  1. 1:De-icing and Snow Removal:Calcium chloride dihydrate is widely used as a de-icing agent to melt ice and snow on roads and sidewalks. It is effective at lower temperatures compared to other de-icing materials like rock salt.

  2. 2:Drying Agent:It serves as a desiccant in various applications, such as drying gases, controlling humidity in industrial processes, and protecting moisture-sensitive products.

  3. 3:Food Additive:Calcium chloride dihydrate is used in the food industry as a firming agent (E509) to enhance the texture and crispness of foods like pickles and canned vegetables.

  4. 4:Oil and Gas Industry:It is used for well drilling, as a brine for controlling formation pressures, and as a completion fluid in oil and gas drilling operations.

  5. 5:Concrete Accelerator:Calcium chloride dihydrate can be added to concrete mixes to accelerate the setting time, especially in cold weather conditions.

  6. 6:Chemical Manufacturing:It is used in various chemical processes, including the production of calcium salts, as a desiccant in laboratories, and in the manufacture of fire extinguishers.

Handling Precautions:

  • Calcium chloride dihydrate is hygroscopic, meaning it readily absorbs moisture from the air. Therefore, it should be stored in airtight containers.
  • It is corrosive to metals, so precautions should be taken to avoid contact with reactive metals like aluminum and magnesium.
  • When handling, wear appropriate protective gear, such as gloves and safety goggles, to prevent skin and eye contact.

Packing and Storage:

  • Calcium chloride dihydrate is typically available in various forms, including flakes, pellets, or prills.
  • Store it in a dry and cool place away from incompatible substances.

Regulatory Compliance:

  • In food and pharmaceutical applications, ensure that calcium chloride dihydrate meets the relevant quality and safety standards and complies with food additive regulations.

Supplier Information:

  • Source calcium chloride dihydrate from reputable suppliers to ensure product quality and consistency, especially when it is used in critical applications like food or pharmaceuticals.

The specific properties and uses of calcium chloride dihydrate may vary depending on its intended application and manufacturer. Always consult the product's technical data sheet and follow safety guidelines when handling and using it.

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