1.1. Appearance

Flakes, powder or granule

1.2. State of mater

Solid at 293 K (20·C)

1.3. Odour

Odourless

1.4. Colour

White, slightly grey or cream, depending on content of iron compounds or other impurities.

1.5. Boiling point

1873 K (1600·C)

1.6. Melting point

1045 K (772·C)

1.7. Molecular mass

Dihydrate (CaCl₂.2H₂O) - 147

1.8. Vapour pressure ( at 293 K )

Practically 0 at 293 K (20·C)

1.9. Solubility in water

Well soluble in water:

745 g/l at 293 K (20·C)

1590 g/l at 373 K (100·C)

1.10. Solubility in other solvents

Soluble in acids, alcohols and in acetone

1.11. Density

2.512 g/cm³ at 293 K (20·C)

1.12. Flash point

Non- flammable compound

1.13. Self – ignition temperature

Does not ignite

1.14. Decomposition temperature

At 448 K (175·C) Calcium Chloride looses one molecule of water, complete dehydration takes place at 533 K (260·C).

Does not decompose below 1873 K (1600·C) – boiling point.

1.15. Reactivity

Highly hygroscopic

1.16. Corrosiveness

-         Due to strong hygroscopic properties, aqueous solutions of Calcium Chloride are corrosive.

-         At high humidity level, solid Calcium Chloride is also corrosive (the property is not observed in dry condition and at limited humidity levels).

1.17. Bulk density

Flakes – 750 – 900 kg/m³

Granule - 800 – 950 kg/m³

1.18. Molal heat capacity, Cp

72.8 J/mol x K at 298 K (25·C)

1.19. Specific heat capacity, Co

0.66 J/g x K at 298 K (25·C)

1.20. Heat of fusion

29.36 kJ/mol