If the CAS number is unknown, keep the common polymer name plus intended conversion process, then ask the mill to state the CAS they intend to quote. Do not merge two CAS numbers on one price line.
Sourcing checklist
Lock polypropylene supplier questions before the RFQ leaves your desk
This checklist is a purchase-decision aid, not an ESG statement and not a factory brochure. Use it to decide which melt-flow, pack and document questions must be closed, which can stay open, and which belong to EHS or regulatory reviewers. Polypropylene Bulk Bags Sourcing will not fill unknown fields with typical industry values.
- Identity gate Name, CAS, grade, form
- Melt-flow gate Method, window, moisture
- Pack gate Bag type, net content, pallet
- File gate SDS, TDS, CoA, transport class
Decision gates
Indicators this brief tracks for polypropylene supplier replies
Write the numeric melt-flow window the receiving lab will accept, including method and temperature. If the window is still undecided, mark it open rather than copying a catalog typical value.
List the certificate of analysis fields you expect: melt flow, moisture, ash, color, particle size or others. A blank CoA promise is not a field list.
The safety data sheet and technical data sheet must match grade and additive package. Related-grade files stay in a holding column until replaced.
Still open until quoted
Questions the polypropylene supplier checklist should not pretend to answer
- Mechanical performance, weatherability or food-contact status for any program
- TSCA or REACH status unless the mill returns a product-specific statement
- Inventory, production slot or lead time before a written factory reply
- Savings against a market index; only same-basis wholesale quotations are compared
- Transport acceptance by a named carrier before UN number and SDS are attached
If a mill proposes a different copolymer, bag GSM or melt flow, record it as an alternate path and obtain buyer approval. Then return to quote matching or the procurement article for the comparison table.
Submit the locked polypropylene supplier brief
Send the identity, quantity, destination and remaining document list. We will request factory wholesale quotations against that list, not against a generic polymer catalog.