Properties: strong humidity*-absorbability, and can
produce its dihydrate and hexahydrate. Easy soluble in water,
ethanol, acetone, also in liquid sulfur dioxide, ethylamine,
aniline; but insoluble in glycerol, or phosphorus trichloride. Its
aqueous solution is acidic.
Usage: Especially for
water-treatment in industries, corrosive for electronic printed
board, chlorinating agent in metallurgical industry, oxidant and
mordant in dye industry, and catalyst, oxidant, and chlorinating
agent in organic synthesis, and also for making ferric salt,
pigment as raw
material.
