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acetylene black

noun

Definition of acetylene black

: a carbon black characterized by relatively high electrical conductivity, made by decomposing acetylene (as by pyrolysis in a retort or by explosion), and used chiefly as a filler in dry cells, rubber, and plastics

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First Known Use of acetylene black

1898, in the meaning defined above

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The first known use of acetylene black was in 1898

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