Characters. - Colourless, slightly translucent, hard and friable masses, very deliquescent, odourless, having a hot, sharp, saline taste, and a neutral or faintly alkaline reaction.

Solubility. - Soluble in 1.5 parts of water, and in 8 parts of alcohol at 15° C. (59° F.).

Reactions. - The aqueous solution yields the reactions of calcium (p. 646) and of a chloride (p. 594).

Dose. - 1 to 3 grains for children, and 10 to 20 for adults in syrup. May be given in milk after meals.

Officinal Preparation. B.P.

liquor Calcii Chloridi. Solution of Chloride of Calcium. Calcium chloride 1, water 5 parts. Dose. - 15-50 minims. It is used as a test for tartrates, citrates, and oxalates.

Uses. - Chloride of calcium was in much greater use formerly than at present. It was strongly recommended by Dr. Warbur-ton Begbie for cases of strumous enlargement of the cervical glands, for strumous children with hectic, diarrhoea, and loss of appetite, and for the chronic diarrhoea of children. It reduced the glandular swelling and improved the general health, increasing the appetite : to do good, however, the drug must be taken for months and even as long as two years.1 It has, however, fallen almost into disuse, and is now practically replaced by cod-liver oil and other tonics.

It has a great affinity for water, and is used to remove water from other substances in pharmacy, e.g. in the preparation of absolute alcohol or ether.