gas black (carbon black, channel black, furnace black)

https://doi.org/10.1351/goldbook.G02577
Finely divided carbon (@G02684@) produced by incomplete combustion or thermal @D01547@ of natural gas.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2191 [Terms] [Paper]