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Salts and minerals

Calcium chloride vs magnesium chloride

Calcium chloride (CaCl2, CAS 10043-52-4) and magnesium chloride (Cl2Mg, CAS 7786-30-3) are both listed under chlorides and other halides.

Calcium chloride has a molar mass of 110.98 g/mol, magnesium chloride 95.21 g/mol.

Measured boiling points are 1,935 °C for calcium chloride and 1,412 °C for magnesium chloride.

Calcium chloride carries the GHS signal word Warning, magnesium chloride Danger.

On CompoundList, 835 suppliers list calcium chloride and 387 suppliers list magnesium chloride.

Data last updated 7 October 2026

Calcium chloride and magnesium chloride compared side by side
Calcium chloride chemical structure, CaCl2, CAS 10043-52-4
Calcium chloride
Magnesium chloride chemical structure, Cl2Mg, CAS 7786-30-3
Magnesium chloride
Identity
Name in our databaseCalcium chlorideMagnesium chloride
CAS number10043-52-47786-30-3
Molecular formulaCaCl2Cl2Mg
Molar mass110.98 g/mol95.21 g/mol
IUPAC namecalcium dichloridemagnesium dichloride
EC number233-140-8232-094-6
Physical properties
AppearanceWhite cubic crystals or powderThin white to gray granules and/or flakes
Melting point775 °C712 °C
Boiling point1,935 °C1,412 °C
Density2.15 g/cm³ at 25 °C2.3 g/cm³
SolubilityFreely soluble in water with liberation of much heat7.40 g/100 ml of alcohol @ 20 °C, 72.7 g/100 ml water @ 100 °C
LogP (octanol/water)Computed from the structure-6.37-6.37
Safety (GHS)
Signal wordWarningDanger
Pictograms
GHS07: Harmful or irritant
GHS05: Corrosive
GHS07: Harmful or irritant
Hazard statements
  • H319 Causes serious eye irritation.
  • H290 May be corrosive to metals.
  • H302 Harmful if swallowed.
  • H315 Causes skin irritation.
  • H318 Causes serious eye damage.
  • H319 Causes serious eye irritation.
  • and 1 more
Uses and classification
Uses and functions
  • Cardiovascular drugs
  • Thickeners
  • Skin conditioning agents
  • Fertilizers and micronutrients
  • Leavening and processing aids
  • Set accelerators
  • Thickeners
  • Flavors
  • Leavening and processing aids
  • Flavoring agents
  • NMR chemical shift reference compound
  • Reference compound
CategoryInorganic chemicals › Chlorides and other halidesInorganic chemicals › Chlorides and other halides
HS code282720Calcium chloride282731Of magnesium
Market on CompoundList
Suppliers835 suppliers387 suppliers
Supplier countries72 countries, most in India, China, United States48 countries, most in India, United States, China
Price rangeOnly prices set by suppliers who manage their own profilePrice on requestPrice on request

Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.

Calcium chloride
Magnesium chloride

More comparisons

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