What carbon data should a buyer ask a Map Ta Phut polymer supplier for?

Ask for a cradle to gate footprint per tonne of the exact grade, with feedstock, cracker and polymerisation energy, the allocation method and the year. Thailand runs a national carbon footprint label for products, so some suppliers already hold a figure. Multiply it by the tonnes on your invoices in Scope 3 Category 1.

Gas or naphtha feed

Crackers fed with ethane from Gulf of Thailand gas and those fed with naphtha produce different figures. Ask which feed the grade came from.

Labels

A national product label shows a figure was calculated and reviewed under its scheme. Check its year and boundary before using it.

Without a figure

Use a published resin average and label it as secondary data.

What Senseible does here

Senseible reads purchase invoices into a dated, fingerprinted record, so each supplier figure in your Scope 3 sits next to the quantity and the document it applies to.

• Polymer resin factors
• Sohar polypropylene data
• Steam cracker CO2

Sources: GHG Protocol Corporate Value Chain (Scope 3) Standard, ISO 14067 and ISO 14021 (iso.org)

Last reviewed 2026-10-21.