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Category name:
C4, high 1,3-butadiene (>=0.1%) (LOA cat.D)

Justifications and discussions

Category definition:
The ‘C4, h igh 1, 3 -b u t adie n e (>0. 1 %) ’ category covers hydrocarbon streams containing high purity hydrocarbons, hydrocarbon substances with impurities and complex hydrocarbon reaction products. These hydrocarbon streams have a carbon number distribution that is predominantly C4 but with a range of C3-C5 and more than 0.1% 1,3-butadiene.
Category rationale:
See Attachment 1 in the CSR provided.