SUBSCRIBER NOTE: Platts proposes to revise Asian isomer-grade mixed xylenes specification

Platts is inviting feedback on a proposal to revise the Asian isomer-grade mixed xylenes methodology to include a minimum paraxylene content specification of 18% (by wt.) due to a change in market conditions.

Currently, the Platts Asian isomer-grade mixed xylenes methodology states that traded volume specifications should adhere to specifications as set out in the latest edition of ASTM D-843 in addition to:

a maximum ethylbenzene content of 18% maximum non-aromatics content of 1%, and maximum bromine index of 20 ppm.

The Asian isomer-MX assessments are published on Platts Petrochemical Alert pages 645 and 647, the Asian Petrochemicalscan, and under the following codes in the Platts price database:

Symbol Description PHAUV00 Isomer-MX FOB Korea marker

Individual laycans: PHAUV12 Isomer-MX FOB Korea W2 PHAUV12 Isomer-MX FOB Korea W3 PHAUV12 Isomer-MX FOB Korea W4 AAXHK00 Isomer-MX FOB Korea W5

PHAUV11 Isomer-MX FOB Korea marker weekly average PHAUV03 Isomer-MX FOB Korea marker monthly average

PHAUT00 Isomer-MX CFR Taiwan marker

Individual laycans: PHAUT12 Isomer-MX CFR Taiwan W2 PHAUT13 Isomer-MX CFR Taiwan W3 PHAUT14 Isomer-MX CFR Taiwan W4 AAXHL00 Isomer-MX CFR Taiwan W5

PHAUT11 Isomer-MX CFR Taiwan marker weekly average PHAUT03 Isomer-MX CFR Taiwan marker monthly average

Please send any feedback or questions to petchems@spglobal.com and pricemethodology@spglobal.com by November 23, 2016.

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.