Pyrobitumen is a type of solid, amorphous organic matter. Pyrobitumen is mostly insoluble in CS2 (and other organic solvents) as a result of molecular cross-linking which renders previously soluble organic matter (i.e., bitumen) insoluble., Not all solid bitumens are pyrobitumens, in that some solid bitumens (e.g., gilsonite) are soluble in common...
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natural, solid hydrocarbon substance, distinguishable from bitumen (q.v.) by being infusible and insoluble. When heated, however, pyrobitumens ... [1 related articles]
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