Painters' oils, colours, and varnishes : with numerous engravings and diagrams (1905)
Hasluck, Paul N. (Paul Nooncree), 1854-1931 · Philadelphia : David McKay · leaf 30
e same time boiling linseed oil. In this process the oil is first treated in a tank with sulphuric acid of 30 per cent. strength, which is found to char the impurities without injuriously affecting the oil. After being washed and allowed to stand for some time the impurities subside, the oil is… … Fig, 15.—Vincent Oil-boiling Pan. with the manganese compound, first bleaches and then converts it into an excellent drying oil. By varying the time of heating, products of any desired consistency may be obtained. The amount of manganese linoleate added is very small; as already stated it is not…
Paint · Varnish and varnishing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
