The carbon filament is placed in a vessel surrounded by an atmosphere of hydrocarbon, such as coal gas or vapour of benzol.
benzol rapidly removes the grease stains, and may be advantageously substituted for preparations of soap.
benzol contains carbon and hydrogen, while alcohol contains carbon, hydrogen and oxygen.
Benzene (benzol) is the specific coal-tar product which has the formula C6H6.
Delicate objects in gypseous alabaster can only be safely cleaned with benzol, or with pure oil of turpentine.
“Benzene” is the term used by English chemists, “benzol” is used in Germany, and “benzole” in France.
The celebrated nostrum vended under the name of Insecticide is said to be nothing but benzol.
By the use of potassium chloride it was found possible to effect a separation with benzol and water, also with naphtha and water.
Provision is also made for delivery to France over three years of benzol, coal tar, and of ammonia.
The odour of the benzol passes off very quickly, that of the turpentine after exposure for a few days.