Читать книгу A Text-book of Paper-making - C. F. Cross - Страница 28
Sulphuric Acid.
Оглавление—On triturating the fibre with the concentrated acid, it dissolves to a brownish-purple solution; on pouring this solution into water, a substance is precipitated in dark-brown flocks; when dried it has the following composition:
C | 64·4 |
H | 4·4 |
O | 31·2 |
The solution yields on distillation furfural and acetic acid.