Calcium chloride dihydrate
CAS 10035-04-8
EC 600-075-5
Formula CaCl2.2H2O
MW 147.01 g/mol
Salts & Minerals Water TreatmentFood & NutritionBuilding & ConstructionOil, Gas & Energy pH Regulation & BufferingPreservation & BiocideCatalysisFlame Retardancy
Description
Calcium chloride dihydrate (CaCl2·2H2O, CAS 10035-04-8) is an inorganic salt commercially known as calcium chloride hydrate or hydrated calcium chloride. It is classified under HS code 28272000 and carries EC number 600-075-5. It carries no E-code designation for food applications in the EU.
In water treatment, calcium chloride raises water hardness and stabilises pH by increasing calcium ion concentration, preventing pipe corrosion. In oil and gas drilling, it functions as a completion fluid and brine additive, controlling wellbore pressure through density adjustment. It also acts as an accelerating catalyst in concrete setting, shortening cure times in construction applications.
Calcium chloride dihydrate is available in food-grade (FCC), technical, and Ph.Eur.-compliant grades, supplied as granules or crystalline powder. The substance is registered under REACH and complies with applicable EU chemical regulations. Standard packaging includes 25 kg bags and bulk options depending on grade specification.
In water treatment, calcium chloride raises water hardness and stabilises pH by increasing calcium ion concentration, preventing pipe corrosion. In oil and gas drilling, it functions as a completion fluid and brine additive, controlling wellbore pressure through density adjustment. It also acts as an accelerating catalyst in concrete setting, shortening cure times in construction applications.
Calcium chloride dihydrate is available in food-grade (FCC), technical, and Ph.Eur.-compliant grades, supplied as granules or crystalline powder. The substance is registered under REACH and complies with applicable EU chemical regulations. Standard packaging includes 25 kg bags and bulk options depending on grade specification.
Physical Properties
| Melting Point | 175.5 °C |
| Density | 1.85 g/cm³ (solid) |
| Appearance | Calcium chloride is a colorless to off-white crystalline solid which is deliquescent (absorb water). When heated, crystals lose water @ 100C. |
| Color | White to white-grayish |
| Odor | Odorless |
| Form | Solid |
| Water Solubility | 1000 g/L (0 ºC) |
| Vapor Pressure | 0.01 mm Hg ( 20 °C) |
| Refractive Index | ~1.358 |
| pH | 4.5-8.5 (50g/l, H2O, 20℃) |
| Log P | -1.380 (est) |
Safety & Handling (Learn More)
Warning GHS07
H
H319
P
P280P264+P265P337+P317P305+P351+P338
Trade & Regulatory
| HS Code | 28272000 |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 1 |
Other Names
calcium chloride hydratecalcium dichloride dihydrateCALCIUM CHLORIDEreplenisher(calcium)CALCIUM CHLORIDE 6H2OCalciumchloride,granularCALCIUM CHLORIDE, HYDRATEDCALCIUM CHLORIDE 6-HYDRATE
Related Products
Raw Materials
Derivatives
Need a chemical? Get a quote within 24 hours.