He was attempting to manufacture quinine from aniline, an inexpensive and readily available coaltar waste product.
他试图用苯胺批量制造奎宁,苯胺是一种廉价且容易获得的煤焦油废料。
2
Utilising the cheap and plentiful coaltar that was an almost unlimited byproduct of London's gas street lighting, the dye works began producing the world's first synthetically dyed material in 1857.