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SUBSCRIBER NOTE: Platts proposes changes to volume range, basis for FOB NWE seagoing butane assessment

S&P Global Platts proposes to reflect a volume range of 4,000-6,000 mt, with a base standard of 4,000 mt, for its FOB NWE Seagoing Butane (PMAAL00) assessment with effect from December 2.

Platts has observed that typical parcels trading in this market are above 4,000 mt, and has received feedback that the current parcel sizes reflected in the assessment are no longer the most fungible.

While smaller parcel trades have been observed, those are typically loaded onto larger vessels wherein the cost of unused freight affects the value of the trade.

The assessment currently reflects a range of full or part cargoes from 1,800-6,000 mt with no basis size.

The Butane NWE CIF assessment would remain unchanged, reflecting full or part cargoes of 1,000-3,600 mt.

Under this proposal, only trades for parcels within the 4,000-6,000 mt range would be reflected in the assessment, with trades for larger sizes normalized to the basis volume of 4,000 mt for assessment purposes.

Please send any comments or queries by October 31, to with a cc: to

For written comments, please provide a clear indication if comments are not intended for publication by Platts for public viewing.

Platts will consider all comments received and will make comments not marked as confidential available upon request.