Compounds with a phenol group will form a blue, violet, purple, green, or red-brown color upon addition of aqueous ferric chloride. This reaction can be used as a test for phenol groups. Mix several ...

Handl1 obtained brownish-red crystals of ferric succinate by treating a ferric chloride solution with a solution of sodium succinate. We have now succeeded in preparing ferric succinate jellies.

On sodium chloride crystals the layers were 1700–4100 A ... chloride crystals the layers were 1700–4100 A. thick and were visible only under dark-field illumination and high magnification.