By adding the hydrochloric acid slowly in drops, first antimony sulphide, then arsenious sulphide are separated; after filtration, a solution is obtained from which snow-white germanium sulphide precipitates upon further, ample addition of hydrochloric acid.
Bergamot essential oil is a cold-pressed essential oil produced by cells inside the rind of a bergamot orange fruit. It is a common top note in perfumes. Bergamot essential oil is a major component of the original Eau de Cologne composed by Farina at the beginning of 18th-century Germany.The first record of bergamot oil as fragrance ingredient is 1714, to be found in the Farina Archive in Cologne.One hundred bergamot oranges will yield about three ounces (85 grams) of bergamot oil. The scent of bergamot essential oil is similar to a sweet light orange peel oil with a floral note. Earl Grey tea  is a type of black tea that contains bergamot essential oil as a flavouring.ne hundred bergamot oranges will yield about three ounces (85 grams) of bergamot oil. The scent of bergamot essential oil is similar to a sweet light orange peel oil with a floral note.  Earl Grey tea  is a type of black tea that contains bergamot essential oil as a flavouring.
Bergamot is a plant that produces a type of citrus fruit. Oil taken from the peel of the fruit is used to make medicine. Some people treat a skin condition called psoriasis by applying bergamot oil directly to the skin and then shining long-wave ultraviolet (UV) light on the affected area.ergamot oil is also applied to the skin (used topically) for a tumor caused by a fungal infection (mycosis fungoides) and for pigment loss (vitiligo). It is also used as an insecticide to protect the body against lice and other parasites.