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VIENNA EXHIBITION, 1873.
ENGLISH DEPARTMENT, No. 742.
ANTRACENE AND ALIZARINE.
Antraceno, one of the hydrocarbons obtained in the distillation of coal tar, was commercially unknown three years ago. When found as a sédiment in the green grease, one of the last portions of the distillation of coal tar, and used as a lubricating material, it was considered as an impurity, and thrown away.
The first discoverers of the utility of this article were Messrs. Graebe and Lieberman, the former Professer at Konigsberg, the latter at Berlin.
Their first publications date from 1867, but it was only in 1871 that their invention to produce artificial Alizarine (the important principle in Antracene) attracted more geneneral attention. In January of last year even its value was known only to very few manufacturers, and the same could be purchased at the price of £125 for a ton of commercially pure Antracene. The very high prices obtained for the Alizarine, principally in Russia, then, how-ever, suddenly created a very large enquiry after this article, and the présent value may be considered to be £400 to £600 for the ton, commercially pure, while in a short time of excitement it was paid even double that price.
As it is almost certain that in a short time the artificial Alizarine will entirely replace the natural Alizarine, made from the " madder root,” it is not astonishing that, in the course of a few months, about twenty new factories of Alizarine have been established.
Though England produced till now more Antracene than all other countries put together, it is to be regretted that in conséquence of sonie English patents only the holders of the same now manufacture the Alizarine in this country, while lifteen of the new factories of Alizarine have sprung up in Germany, and the re-mainder in other countries, ami therefore the bulk of the profits
has been made abroad.
Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 98,41 %.
La langue de reconnaissance de l'OCR est le Français.
ENGLISH DEPARTMENT, No. 742.
ANTRACENE AND ALIZARINE.
Antraceno, one of the hydrocarbons obtained in the distillation of coal tar, was commercially unknown three years ago. When found as a sédiment in the green grease, one of the last portions of the distillation of coal tar, and used as a lubricating material, it was considered as an impurity, and thrown away.
The first discoverers of the utility of this article were Messrs. Graebe and Lieberman, the former Professer at Konigsberg, the latter at Berlin.
Their first publications date from 1867, but it was only in 1871 that their invention to produce artificial Alizarine (the important principle in Antracene) attracted more geneneral attention. In January of last year even its value was known only to very few manufacturers, and the same could be purchased at the price of £125 for a ton of commercially pure Antracene. The very high prices obtained for the Alizarine, principally in Russia, then, how-ever, suddenly created a very large enquiry after this article, and the présent value may be considered to be £400 to £600 for the ton, commercially pure, while in a short time of excitement it was paid even double that price.
As it is almost certain that in a short time the artificial Alizarine will entirely replace the natural Alizarine, made from the " madder root,” it is not astonishing that, in the course of a few months, about twenty new factories of Alizarine have been established.
Though England produced till now more Antracene than all other countries put together, it is to be regretted that in conséquence of sonie English patents only the holders of the same now manufacture the Alizarine in this country, while lifteen of the new factories of Alizarine have sprung up in Germany, and the re-mainder in other countries, ami therefore the bulk of the profits
has been made abroad.
Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 98,41 %.
La langue de reconnaissance de l'OCR est le Français.